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Asefa, Tewodros (Teddy)

Position: 
Associate Professor

Teddy Asefa Phone: 848-445-2970
E-mail: E-mail
FAX: 732-445-5312
Lab: CBE-159/161
Office: CBE-138
Mail: Chemistry & Chemical Biology, 610 Taylor Road,
Piscataway, NJ 08854
Education Links
  • B.Sc., Distinction, 1992, Addis Ababa University, Ethiopia
  • M.Sc., 1996-1998, The State University of New York at Buffalo
  • Ph.D., 1998-2002, University of Toronto
  • Postdoctoral Fellow, 2003-2005, McGill University

Awards & Honors

  • Rutgers Board of Trustees Research Fellowships for Scholarly Excellence (2012)
  • NSF-CBET, NanoEHS Award (2011–2014)
  • NSF Special Creativity Award (2011–2013)
  • NSF-DMR, American Competitiveness and Innovation Fellowships (NSF-ACIF), One of the 10 Awardees (2010)
  • NSF CAREER Award (2007–2012)
  • NSF-DMR Grant (2008–2013)
  • Miller Postdoctoral Fellow Nominee, University of California at Berkeley (2002)
  • University of Toronto Open Fellowships (1999–2002)
  • Fulbright Fellow, University of Delaware and SUNY at Buffalo (1996–1998)
  • Dean's List and Distinction Graduate (1989–1992)

Research Summary

The primary research activities in my group focus on (1) the design, synthesis, and self-assembly of novel inorganic nanomaterials and organic-inorganic hybrid nanostructured and nanoporous materials and nanobiomaterials; (2) catalysis and nanocatalysis; (3) nanomaterials for biological, medical, and biosensing applications; and (4) nanomaterials for solar cell applications. Our nanomaterials are typically chosen to have multifunctional groups as well as novel structures and shapes at the nanometer scale. Uncovering the structure-property relationships as well as the potential applications of these materials for catalysis, nanoelectronics, separations, sensing, biosensing and drug delivery is also part of our research program.

Specific areas of interest:

Nanoparticles(1) Nanoparticles and core-shell nanoparticles with novel structures and multifunctional groups and their properties and applications: The properties of nanomaterials whose sizes are only a few billionths of a meter have unique properties that are neither bulk nor molecular and can be tuned via the size, shape, and structure of the materials. We are interested in the synthesis and self-assembly of inorganic and core-shell nanoparticles having new structures. By introducing multifunctional organic, organometallic, or biological groups into such nanostructured materials, we create new classes of nanomaterials with unprecedented and potentially useful properties for nanoelectronics, sensing, biological imaging, and targeted drug delivery.

(2) Multifunctional self-assembled monolayers on surfaces and nanoparticles and their self-assembled structures: Self-assembled monolayers (SAMs) on various substrates have potential for several technological applications. Our research deals with the synthesis of multifunctional SAM structures using functionalized organosilanes and alkanethiols. We are interested in the fundamental self-assembly studies of these multifunctional molecules on various substrates as well as the potential of such SAM structures for nanopatterning of molecular electronic devices and for catalysis and sensing applications. Furthermore, we explore the self-assembly various metallic and semiconducting nanoparticles and nanorods into anisotropic nanostructures.Monolayers

(3) Catalysis and nanocatalysis: Our lab is developing new methods to efficient and recyclable heterogeneous nanoporous and nanostructured catalysts for various one step and multi-step tandem catalytic transformations. The cost of these new catalysts is relatively low because they are made from commercially available materials, are very effective in chemical transformations and can be reused numerous times. We developed methods to some of the most efficient and selective nanoporous catalyst for base catalyzed reactions such the Henry and aldol condensation reactions. This catalyst significantly improves the yield of the Henry reaction and selectively produces nitro alcohol or nitrostyrene product. The catalyst is expected to find application in pharmaceuticals such as aliskiren, which is used for the treatment of hypertension and high blood pressure.nanopoous catalyst

(4) Multifunctional nanoporous and mesoporous materials for catalysis and drug delivery: The bottom-up synthesis of nanostructured and mesoporous materials using templates can create various new classes of nanomaterials. Our research in this area focuses on the combination of "hard templates" with "self-assembly" to produce multifunctional nanoporous and mesoporous nanospheres. Using these materials, we investigate host-guest inclusion, immobilization of enzymes for biocatalysis, and adsorption and delivery of anti-cancer drugs and chemical species.

nanomaterials for cancer treatment(5) Nanomaterials for cancer treatment: We study the adsorption and release of anticancer drugs with nanostructured and nanoporous materials and the biological, cytotoxicity, endocytosis, phagocytotosis and anticancer properties of the nano-drug conjugates on various cancer cell lines. Furthermore, by placing antibody and other bioactive functional groups around the nanomaterials, we study their potential for effective treatment of various forms of cancer.

Dye sensitized solar cells(6) Dye sensitized solar cells: we develop synthetic methods to mesoporous materials using water-extractable polymer templates, which are subsequently used to fabricate efficient dye or nanoparticle sensitized solar cells. In collaboration with Prof. Eric A. Schiff’s group (Physics Department, Syracuse University), we have successfully made highly ordered 3-dimensional mesoporous titania based solar cells.


 

Complete List of Book, Book Chapters, Patents, and Publications

 

Book:

  1. “Nanocatalysis: Synthesis and Applications” ~600 pages, Edited by Vivek Polshettiwar and Tewodros Asefa, John Wiley & Sons, Inc., 2013. ISBN: 978-1-118-14886-0.

    Released July 2013:

    http://www.wiley.com/WileyCDA/WileyTitle/productCd-111814886X.html

 

Book Chapters:

  1. Polshettiwar, V.*; Asefa, T.*; “Introduction to Nanocatalysis” Book Chapter In Nanocatalysis: Synthesis and Applications” (V. Polshettiwar, T. Asefa, eds.), John Wiley & Sons, Inc., 2013, 1-10.
  2. Asefa, T.*; Biradar, A. V.; Das, S.; Sharma, K. K.; Silva, R. “Nanocatalysts for the Heck Coupling Reactions” 40 pages, Book Chapter in “Nanocatalysis: Synthesis and Applications” (V. Polshettiwar, T. Asefa, eds.), John Wiley & Sons, Inc., 2013, 11-50.
  3. Asefa, T.*; Biradar, A. V.; Das, S.; Sharma, K. K. “Nanostructured Catalysts for the Henry, Aldol, and Knoevenagel Reactions” 30 pages, Book Chapter in “Nanocatalysis: Synthesis and Applications” (V. Polshettiwar, T. Asefa, eds.), John Wiley & Sons, Inc., 2013, 221-250.
  4. Asefa, T.*; Anan, A.; Duncan, C. T.; Xie, Y. “Spherical & Anisotropic Non-Magnetic
    Core-shell Nanomaterials - Synthesis and Characterization” Invited Book Chapter in a Book “Non Magnetic Bi-Metallic and Metal Oxide Nanomaterials for Life Sciences", Editor: Challa S. S. R. Kumar, Wiley-VCH, Volume 3, Chapter 9, 2009, pp. 281-330.
  5. Asefa, T.*; Anan, A.; Duncan, C. T.; Xie, Y. “Functionalized Nanoporous and Mesoporous Heterogeneous Catalysts – New Synthetic Strategies and Applications” Invited Book Chapter in a Book “Heterogeneous Catalysis Research Progress”, Editor: Mathias B. Gunther, Nova Publishers, New York, Chapter 2, 2009, pp. 81-110.
  6. Asefa, T.*; Sharma, K. K.; Anan, A.; Vathyam, R.; Buckley, R. P.; Dam, H. M.; Xie, Y.; Quinlivan, S.; Wang, G.; Duncan, C. “Efficient and Selective Nanoporous Catalysts by Placing Multiple Site-Isolated Functional Groups on Mesoporous Materials” Invited Book Chapter In “Nanoporous Materials” (A. Sayari and M. Jaroniec, eds.), World Scientific Publ. Co., Singapore, 2008, pp. 497-508.

 

Patents:

  1. Inventors: Asefa, T. and Ozin, G. A. “Functionalized organometallic crystalline mesoporous material prepared by metalation-condensation of organometallic compounds.” U.S. Patent: 2004, US 2004072674 Licenced to: Exxonmobil Research and Engineering Company, USA.
  2. Inventors: Whitnall, W.; Asefa, T.; and Ozin, G. A. “Hybrid porous organic-metal oxide materials.” U.S. Patent: . No.: 12188224; Publication No: 20080193734
  3. Inventors: Asefa, T.*, Sharma, K. K., Anan, A. “Efficient and selective Multifunctional Nanocatalysts by Solvent-Assisted Grafting of Organofunctional Goups on Nanoporous Materials” Non-Provisional Patent Application, Filed to US PTO in 2008.
  4. Inventors: Asefa, T.*, Shi, Y.-L “Corrugated and Hollow Metal Oxide and Metal/Metal-Oxide Core-Shell Microparticles by Controlled Etching” Provisional Patent Application, Filed in 2008.
  5. Inventors: Asefa, T.*, Mishler R.; Schiff, E. A.* “Synthetic Methods for Mesostructured and Nanoporous Materials and for Solid Acid Nanocatalysts in One-Pot by Using Phosphonated Triblock Copolymer Templates” Invention Disclosure and Provisional Patent Application, Filed in 2009.

 

Peer-Reviewed Publications:

     

    2014

  1. Das, S.; Goswami, A.; Hesari, M.; Maran, F.; Asefa, T.* "Reductive Deprotection of Monolayer Protected Nanoclusters: An Efficient Route to Supported Ultrasmall Au Nanocatalysts for Selective Oxidation” Small, 2014, In Press (Accepted for Publication).
  2. Nguyen-Phan, T.-D.; Pham, V. H.; Chung, J. S.; Chhowalla, M.; Asefa, T.; Kim, W.-J.; Shin, E.* "Photocatalytic Performance of Sn-doped TiO2/Reduced Graphene Oxide Composite Materials" Appl. Catal. A: Gen., 2014, In Press (Accepted for Publication).
  3. Pezoti-Junior, O.; Gomes, R.; Cazetta, A. L.; Barizão, E. O.; de Souza, I. P. A. F.; Asefa, T.; Almeida, V. C. "Synthesis of ZnCl2-Activated Carbon from Macadamia Nut Endocarp (Macadamia Integrifolia) by Microwave-Assisted Pyrolysis: Optimization using RSM and Blue Methylene Adsorption" J. Anal. Appl. Pyrol., 2014, 105, 166–176. DOI: dx:doi.org/10.1016/j.jaap.2013.10.015).
  4. Jain, R. N.; Huang, X.; Das, S.; Silva, R.; Ivanova, V.; Minko, T.; Asefa, T.* "Functionalized Mesoporous Silica Nanoparticles for Glucose- and pH-Stimulated Release of Insulin" Z. Anorg. Allg. Chem. (Wiley), 2014, In Press (Accepted for Publication).
  5. Huang, X.; Goswami, A.; Zou, X.; Hayes, S.; Shah, V.; Minko, T.; Tao, Z.*; Asefa, T.* "Nanostructured TiO2 Catalyzed Oxidations of Caffeine and Isocaffeine and their Cytotoxicity and Genotoxicity towards Ovarian Cancer Cells", BioNanoScience, 2014, In Press (Accepted for Publication); DOI: 10.1007/s12668-013-0120-7.
  6.  

    2013

  7. Zou, X.†; Goswami, A.†; Asefa, T.* "Efficient Noble Metal-Free (Electro)Catalysis of Water and Alcohol Oxidations by Zinc−Cobalt Layered Double Hydroxide" J. Am. Chem. Soc., 2013, 135, 17242–17245.
  8. Voiry, D.; Yamaguchi, H; Li, J.; Silva, R.; Alves, D. C. B.; Fujita, T.; Chen, M.; Asefa, T.; Shenoy, V.; Eda, G.; Chhowalla, M.* "Enhanced Catalytic Activity in Strained Chemically Exfoliated WS2 for Hydrogen Evolution" Nature Mater., 2013, 12, 850–855.
  9. Silva, R.; Voiry, D.; Chhowalla, M.; Asefa, T.* "Efficient Metal-Free Electrocatalysts for Oxygen Reduction: Polyaniline-Derived N- and O-Doped Mesoporous Carbons" J. Am. Chem. Soc., 2013, 135, 7823–7826.
  10. Voiry, D.; Salehi, M.; Silva, R.; Fujita, T.; Chen, M.; Asefa, T.; Shenoy, V. B.; Eda, G.; Chhowalla, M.* "Conducting MoS2 Nanosheets as Catalysts for Hydrogen Evolution Reaction" Nano Lett., 2013, 13, 6222–6227.
  11. Linguito, S. L.; Zhang, X.; Padmanabhan, M.; Biradar, A.; V.; Xu, T.; Emge, T. J.; Asefa, T.; Li, J.* "New Polyoxomolybdate Compounds Synthesized in situ Using Ionic Liquid 1-Butyl-3-methyl-imidazolium Tetrafluoroborate as Green Solvent" New J. Chem., 2013, 37, 2894–2901.
  12. Zou, X.; Su, J.; Silva, R.; Goswami, A.; Sathe, B. R.; Asefa, T.* "Efficient Oxygen Evolution Reaction Catalyzed by Low-Density Ni-Doped Co3O4 Nanomaterials Derived from Metal-Embedded Graphitic C3N4" Chem. Commun., 2013, 49, 7522–7524.
  13. Asefa, T.* “Nanocrafting Iron-Cobalt for Fischer-Tropsch Catalysis”, Invited Highlight Paper, ChemCatChem, 2013, 5, 1698–1700.
  14. Nguyen-Phan, T.-D.; Oh, E.-S.; Chhowalla, M.; Asefa, T.*; Shin, E. W.* "Hierarchical Macrochanneled Layered Titanates with “House-of-Cards”-Type Titanate Nanosheets and their Superior Photocatalytic Activity" J. Mater. Chem. A., 2013, 1, 7690–7701.
  15. Cazetta, A. L.; Junior, O. P.; Vargas, A. M. M.; da Silva, A. P.; Zou, X.; Asefa, T.; Almeida, V. C.* "Thermal Regeneration Study of High Surface Area Activated Carbon Obtained from Coconut Shell: Characterization and Application of Response Surface Methodology" J. Anal. Appl. Pyrol., 2013, 101, 53–60.
  16. Zou, X.; Silva, R.; Huang, X.; Asefa, T.* "Self-Cleaning porous TiO2-Ag Core-Shell Nanocomposite Material for Surface-Enhanced Raman Scattering" Chem. Commun., 2013, 49, 382–384.
  17. Al Samri, M. T.; Silva, R.; Almarzooqi, S.; Albawardi, A.; Othman, A. R. D.; Al Hanjeri, R. S. M. S.; Al Dawaar, S. K. M.; Tariq, S.; Souid, A.-K.*; Asefa, T.* "Lung Toxicities of Core-Shell-Shell Nanomaterials Composed of Carbon, Cobalt and Silica" Int. J. Nanomedicine, 2013, 8, 1223–1244.
  18. Zou, X.; Tao, Z.*; Asefa, T.* "Semiconductor and Plasmonic Photocatalysis for Selective Organic Transformations" Invited Review Paper, Curr. Org. Chem., 2013, 17, 1274–1287.
  19. Aburawi, E. H.; Qureshi, M. A.; Oz, D.; Tariq, S.; Das, S.; Goswami, A.; Asefa, T.; Biradar, A. V.; Souid, A.-K.; Adeghate, E.*; Howarth, F. C.* "Biocompatibility of Calcined Mesoporous Silica particles with Ventricular Myocyte: Structure and Function" Chem. Res. Toxicol., 2013, 26, 26–36.
  20. Das, S.; Goswami, A.; Murali, N.; Asefa, T.* "Efficient Tertiary Amine/Weak Acid Bifunctional Mesoporous Silica Catalysts for Michael Addition Reactions" ChemCatChem, 2013, 5, 910–919.
  21.  

    2012

  22. Silva, R.; Asefa, T.* "Noble Metal-Free Oxidative Electrocatalysts: Polyaniline and Co(II)-Polyaniline Nanostructures Hosted in Nanoporous Silica" Adv. Mater., 2012, 24, 1878–1883.
  23. Silva, R.; Al-Sharab, J.; Asefa, T.* "Edge Plane-Rich Nitrogen-Doped Carbon Nanoneedles (CNNs) and Efficient Metal-Free Electrocatalysts" Angew Chem. Int. Ed., 2012, 51, 7171–7175.
  24. Asefa, T.*; Tao, Z.* "Mesoporous Silica and Organosilica Materials: Review on their Synthesis and Organic Functionalization" Can. J. Chem., 2012, 90, 1015–1031.
  25. Zhang, J.; Biradar, A. V.; Pramanik, S.; Emge, T. J.; Asefa, T.*; Li, J.* "A New Layered Metal-Organic Framework as a Promising Heterogeneous Catalyst for Olefin Epoxidation Reactions" Chem. Commun., 2012,48, 6541–6543.
  26. Woronowicz, K.;*, Ahmed, S.; Biradar, A. A.; Biradar, A. V.; Birnie, D. P.; Asefa, T.; Niederman, R. A.*, "Near-IR Absorbing Solar Cell Sensitized With Bacterial Photosynthetic Membranes" Photochem. Photobio., 2012, 88, 1467–1472.
  27. Asefa, T.*; Tao, Z.* "Biocompatibility of Mesoporous Silica Nanoparticles" Invited Review Paper, Chem. Res. Toxicol., 2012, 25, 2265–2284.
  28. Al Samri, M. T.; Biradar, A. V.; Alsuwaidi, A. R.; Balhaj, G.; Al-Hammadi, S.; Shehab, S.; Al-Salam, S.; Tariq, S.; Pramathan, T.; Benedict, S.; Asefa, T.*; Souid, A.-K.* “Study on In Vitro Biocompatibility of Calcined Mesoporous Silica Particles with Fetal Blood Cells” Int. J. Nanomedicine, 2012, 7, 3111–3121.
  29. Das, S.; Asefa, T.* "Core-Shell-Shell Microsphere Catalysts Containing Au Nanoparticles for Styrene Epoxidation" Top. Catal., 2012, 55, 587-594.
  30. Biradar, A. V.; Asefa, T.* "Nanosized Gold Catalyzed Oxidation of Alkyl-Substituted Benzenes" Appl. Catal. A: Gen., 2012, 435-436, 19–26.
  31. Asefa, T.* "Chiral Nematic Mesoporous Carbons from Self-Assembled Nanocrystalline Cellulose", Invited Highlight Paper, Angew Chem. Int. Ed., 2012, 51, 2008–2010.
  32. Wang, Y.; Biradar, A. V.; Asefa, T.* "Hollow SiO2/Pd Nanoparticles/Porous SiO2/ZrO2 Core/Multi-Shell Nanospheres with Tunable Structures and Efficient Catalytic Properties" ChemSusChem, 2012, 5, 132–139.

     

    2011

  33. Silva, R.; Biradar, A. V.; Fabris, L.*; Asefa, T.* "Au/SBA-15 Based Robust and Convenient to Use Powdered Nanomaterial for Surface Enhanced Raman Scattering (SERS)" J. Phys. Chem. C, 2011, 115, 22810–22817.
  34. Biradar, A. V.; Biradar, A. A.; Asefa, T.* "Silica-Dendrimer Core-Shell Nanospheres with Encapsulated Ultrasmall Palladium Nanoparticles as Efficient and Easily Recyclable Heterogeneous Nanocatalysts" Langmuir, 2011, 27, 14408–14418.
  35. Ahmed, S.; Du Pasquier,A.; Birnie, D. P.*; Asefa, T* "Self-Assembled TiO2 with Increased Photoelectron Production, and Improved Conduction and Transfer: Enhancing Photovoltaic Performance of Dye-Sensitized Solar Cells" ACS Appl. Mater. Interfaces, 2011, 3, 3002–3010.
  36. Ahmed, S.; Du Pasquier, Asefa, T.*, Birnie D. P. III;* "Beneficial Microstructured TiO2 Photoanodes for Dye Sensitized Solar Cells Highly Improved by Simple Surface Treatment" Adv. Energy Mater., 2011, 1, 879-887.
  37. Vathyam, R.; Wondimu, E.; Zhang, C.; Hayes, S.; Tao, Z.; Asefa, T.* "Improving Drug Adsorption and Release Properties on Nanostructured Materials with Temperature" J. Phys. Chem. C, 2011, 115, 31135–31150.
  38. Duncan, C. T.; Biradar, A. V.; Asefa, T.* "Aminotroponiminate/Aminotroponate-Zinc Complexes Functionalized Mesoporous Silica Catalysts for Intramolecular Hydroamination of Non-Activated Alkenes with Varied Steric and Electronic Properties" ACS Catal., 2011, 1, 736–750.
  39. Sharma, K. K.; Biradar, A. V.; Asefa, T.* "Bifunctional Organic-Inorganic Mesoporous Catalyst for Tandem Reactions" Eur. J. Inorg. Chem., 2011, 21, 3174-3182.
  40. Al-Salam, S.; Al Samri, M. T.; Al Shamsi, M.; Tariq, S.; Benedict, S.; Sudhadevi, M.; Biradar, A. V.; Asefa, T.;* Souid, A.-K.* "In Vitro Study of Calcined Mesoporous Silica Nanoparticles in Mouse Lung" Toxicol. Sci., 2011, 122, 86-99.
  41. Das, S.; Asefa, T.* "Epoxide Ring Opening Reactions with Mesoporous Silica Supported Fe(III) Catalysts" ACS Catal., 2011, 1, 502-510.
  42.  

    2010

  43. Al Shamsi, M.; Al Samri, M. T.; Al-Salam, S.; Conca, W.; Shaban, S.; Benedict, S.; Tariq, S.; Biradar, A.; Penefsky, H. S.; Asefa, T.;* Souid, A.-K.* "Biocompatibility of Calcined Mesoporous Silica Particles with Cellular Bioenergetics in Murine Tissues", Chem. Res. Toxicol. 2010, 23, 179–1805.
  44. Biradar, A. V.; Sharma, K. K.; Asefa, T.* "Continuous and selective Henry Reaction over Nanoporous Silica-Supported Amine Catalyst on Fixed-Bed Reactor" Appl. Cat. A General. 2010, 389, 19–26.
  45. Dikarev, E. V.; Kumar, D. K.; Filatov, A. S.; Anan, A.; Xie, Y.; Asefa, T.; Petrukhina, M. A. "Recyclable Dirhodium Catalysts Embedded into Nanoporous Surface-Functionalized Organosilica Hosts for Cyclopropanation Reactions" ChemCatChem 2010, 11, 1461-1466.
  46. Tao, Z.; Xie, Y.; Goodisman, J.;* Asefa, T.* "Isomer-Dependent Adsorption and Release of Cis- and Trans-platin Anticancer Drugs by Mesoporous Silica Nanoparticles" Langmuir, 2010, 26, 8914–8924.
  47. Wang, Y.; Biradar, A.V.; Asefa, T.* "Nanosphere Supported Shaped Pd Nanoparticles Encapsulated with Nanoporous Silica Shell: Efficient and Recyclable Nanocatalysts" J. Mater. Chem. 2010, 20, 7834-7841.
  48. Duncan, C. T.; Biradar, A. V.; Rangan, S.; Mishler, R. E.; Asefa, T.* "Trimming Nanostructured Walls while Fluorinating their Surfaces: A Route to Widening Pores of Nanoporous Materials and Making Nanocatalysts" Chem. Mater. 2010, 17, 4950-4963.
  49. Wang, Y.; Biradar, A. V.; Wang, G.; Shrama, K. K.; Asefa, T.* "ControlledSynthesis of Cuboctahedral Copper Nanoparticles in Aqueous Phase and their Catalytic Properties" Chem. Eur. J. 2010, 16, 10735-10743.
  50. Biradar, A. A.; Biradar, A. V.; Asefa, T.* "Immobilization of Flavin-Containing Monooxygenase on Corrugated Silica Nanospheres and their Biocatalytic Activities" ChemCatChem 2010, 8, 1004-1010.
  51. Tao, Z.; Toms, B. B.; Goodisman, J.;* Asefa, T.* "Enhancing Cytotoxicity of Platinum Anticancer Drugs by Mesoporous Silica Nanoparticles" ACS Nano 2010, 2, 789-794.
  52. Wang, Y.; Asefa, T.* Poly(allylamine)-Stabilized Colloidal Copper Nanoparticles: Synthesis, Morphology, and Surface Enhanced Raman Scattering Properties Langmuir 2010, 26, 7469-7474.
  53. Sharma, K. K.; Biradar, A. V.; Asefa, T.* "Substituent- and Catalyst-Dependent Selectivity to Aldol and Nitrostyrene Product in Heterogeneous Base Nanocatalysis" ChemCatChem 2010, 2, 61-66.
  54.  

    2009

  55. Tao, Z.; Xie, Y.; Toms, B. B.; Goodisman, J.; Asefa, T.* “Mesoporosity and Functional Group Dependent Cytotoxicity of Silica Nanomaterials” Chem. Res. Toxicol. 2009, 22, 1869-1880.
  56. Mishler, R. E.; Biradar, A. A.; Duncan, C. T.; Schiff, E. A.*, Asefa, T.*, “Solvent-Washable Polymer Templated Synthesis of Mesoporous Silica and Solid Acid Nanocatalysts in One-Pot” Chem. Comm., 2009, 6201-6203.
  57. Asefa, T.*, Duncan, C. T.; Sharma, K. K. Invited Critical Review Paper “Recent Advances in Nanostructured Sensors and Biosensors” Analyst, 2009, 134, 1980-1990. (The Top Most Accessed Article between September – December 2009).
  58. Duncan, C. T.; Fleitsch, S.; Asefa, T.* “Efficient Nanoporous Silica-Supported Zn-Tropone Heterogeneous Catalyst for Intramolecular Hydroamination Reaction” ChemCatChem, 2009, 1, 365-368.
  59. Tao, Z.; Wang, G.; Goodisman, J, Asefa, T.* “Accelerated Oxidation of Epinephrine by Silica Nanomaterials” Langmuir, 2009, 25, 10183-10188.
  60. Asefa, T.*, Invited Commentary Paper on “Entrapping Cinchona Alkaloids within Metals: Chirally Imprinted Palladium by Rothenberg et al. Nature Chemistry, 2009”, Chemtracts Org. Chem. 2009, 1, 160-167.
  61. DiPasqua, A. J.; Shi, Y.-L.; Mishler, R. E.; Dabrowiak, J. D.*; Asefa, T.* “Preparation of Antibody-Conjugated Gold Nanoparticles” Mater. Lett., 2009, 63, 1876-1879.
  62. Wang, G.; Otuonye, A.; Blair, E. A.; Denton, K.; Tao, Z.; Asefa, T.* “Functionalized Mesoporous Materials with Improved Adsorption Capacity and Release Properties for Different Drug Molecules: A Comparative Study” J. Solid State Chem., 2009, 182, 1649-1660.
  63. Xie, Y.; Sharma, K. K.; Anan, A.; Wang, G.; Biradar, A. V.; Asefa, T.* “Efficient Nanostructured Catalysts for Aldol Condensation Reaction” J. Catal., 2009, 265, 131-140.
  64. Asefa, T.*; Wang, G.; Blair, E. A.; Otuonye, A., Denton, K. “Multifunctional Nanoporous Materials for Adsorption and Controlled Drug Release” Adsorption, 2009, 15, 287-299.
  65.  

    2008

  66. Sharma, K. K.; Buckley, R. P.; Asefa, T.* “Optimizing Cooperative Acid-Base Bifunctional Mesoporous Catalysts for the Henry Reaction: Effects of Separation Distance of Site-Isolated Groups on Cooperative Catalysis”, Langmuir, 2008, 24, 14306-14320.
  67. Asefa, T. “Book Review of Bio-inorganic Hybrid Nanomaterials: Strategies, Synthesis, Characterization and Applications” J. Am. Chem. Soc., 2008, 130, 8871-8871.
  68. Asefa, T.*, Shi, Y.-L. “Corrugated Nanospheres and Nanocages: Synthesis via Controlled Etching and Improving Chemical Delivery and Electrochemical and Biosensing Applications” J. Mater. Chem., 2008, 18, 5604-5614.
  69. Anan, A.; Vathyam, R.; Asefa, T. * “Controlling the Henry Reaction Products: Nitroalcohol versus Nitrostyrene by Simple Change of Amino-Groups of Aminofunctionalized Mesoporous Catalysts” Catal. Lett. 2008, 126, 142-148.
  70. Xie, Y.; Quinlivan, S.; Asefa, T.* “Tuning Metal Nanostructures within SBA-15 by Changing Metal Complexes Reduced In-situ with Grafted Imines and Hemiaminals” J. Phys. Chem. C., 2008, 112, 9996-10003.
  71. Tao, Z.; Morrow, M. P.; Sharma, K. K.; Duncan, C.; Anan, A.; Asefa, T.; Penefsky, H. S.; Goodisman, J.*, Kader, A.* “Mesoporous Silica Nanoparticles Inhibit Cellular Respiration” Nano Lett., 2008, 8, 1517-1526.
  72. Anan, A.; Sharma, K. K.; Asefa, T.* “Selective Efficient Trifunctional Nanoporous Catalysts for Nitroaldol Condensation: Co-Placement of Site-Isolated Multiple Functional Groups on Mesoporous Materials” J. Molecular Catal. A, 2008, 288, 1-13. (Chosen as an Editor’s Choice Article).
  73. Sharma, K. K.; Anan, A.; Buckley, R. P.; Ouellette, W.; Asefa, T.* ”Towards Efficient Nanoporous Catalysts: Controlling Site-Isolation and Concentration of Grafted Catalytic Sites on Nanoporous Materials with Solvents and Colorimetric Elucidation of their Site-Isolation” J. Am. Chem. Soc. 2008, 130, 218-228. (Cited 14 times to date)
  74. Di Pasqua, A. J.; Sharma, K. K.; Shi, Y.-L.; Toms, B. B.; Ouellette, W.; Dabrowiak, J. C.*, Asefa, T.* “Cytotoxicity of mesoporous silica nanomaterials” J. Inorg. Biochem., 2008, 102, 1416-1423. (Cited 16 times to date)
  75.  

    2007

  76. Sharma, K. K.; Asefa, T.* ”Efficient bifunctional nanocatalysts by simple postgrafting of spatially-isolated catalytic groups on mesoporous materials” Angew. Chem., Int. Ed., 2007, 46, 2879-2882. (Cited 27 times to date)
  77. Shi, Y.-L.; Asefa, T.* ”Tailored core-shell-shell nanostructures: Sandwiching gold nanoparticles between silica cores and tunable silica shells” Langmuir, 2007, 23, 9455-9462. (Among the Top Ten Most Accessed Articles in 2007 and Cited 15 times to date).
  78. Otuonye, A.; Asefa, T.* “Efficient and Selective Nanoscale Catalysts by Solvent-Assisted Site-Isolated Grafting (SASIG) of Multiple Functional Groups on Mesoporous Materials” Chemtracts Inorg. Chem., 2007, 20, 85-93.
  79.  

    2006

  80. Asefa, T.*, Shi, T.-L. “Super-stable high-quality Fe3O4 dendron-nanocrystals dispersible in both organic and aqueous solutions” Chemtracts Inorg. Chem., 2006, 19, 299-305.
  81.  

    Publications Prior to 2006

  82. Asefa, T.; Lennox, R. B. ”Synthesis of gold nanoparticles via electroless deposition in SBA-15.” Chem. Mater., 2005, 17, 2481-2483
  83. Whitnall, W.; Asefa, T.; Ozin, G. A. “Hybrid periodic mesoporous organosilicas” Adv. Funct. Mater., 2005, 15, 1696-1702.
  84. Asefa, T.; Kruk, M.; Coombs, N.; Grondey, H.; MacLachlan, M. J.; Jaroniec, M.; Ozin, G. A. “Novel Routes to Periodic Mesoporous Aminosilicas, PMAs: Ammonolysis of Periodic Mesoporous Organosilicas” J. Am. Chem. Soc. 2003, 125, 1662-11673.
  85. Kruk, M.; Asefa, T.; Coombs, N.; Jaroniec, M.; Ozin, G. A. “Synthesis and characterization of ordered mesoporous silicas with high loadings of methyl groups” J. Mater. Chem. 2002, 12, 3452-3457.
  86. Kuroki, M.; Asefa, T.; Whitnal, W.; Kruk, M.; Yoshina-Ishii, C.; Jaroniec, M.; Ozin, G.A. “Synthesis and Properties of 1,3,5-Benzene Periodic Mesoporous Organosilica (PMO): Novel Aromatic PMO with Three Point Attachments and Unique Thermal Transformations.” J. Am. Chem. Soc. 2002, 124, 13886-13895.
  87. Kruk, M.; Asefa, T.; Jaroniec, M.; Ozin, G. A. “Synthesis and characterization of methyl and vinyl-functionalized ordered mesoporous silicas with high organic content.” Stud. Surf. Sci. Catal. 2002, 141, 197-204.
  88. Asefa, T.; Ozin, G. A.; Grondey, H.; Kruk, M.; Jaroniec, M. “Recent developments in the synthesis and chemistry of periodic mesoporous organosilicas.” Stud. Surf. Sci. Catal. 2002, 141, 1-26.
  89. Asefa, T.; Coombs, N.; Grondey, H.; Jaroniec, M.; Kruk, M.; MacLachlan, M. J.; Ozin, G. A. “Bio-inspired nanocomposites: from synthesis toward potential applications.” Mater. Res. Soc. Symp. Proc. 2002, 711, 347-357.
  90. Kruk, M.; Asefa, T.; Jaroniec, M.; Ozin, G.A. “Metamorphosis of Ordered Mesopores to Micropores: Periodic Silica with Unprecedented Loading of Pendant Reactive Organic Groups Transforms to Periodic Microporous Silica with Tailorable Pore Size.” J. Am. Chem. Soc. 2002, 124, 6383-6392.
  91. Matos, J. R.; Kruk, M.; Mercuri, L. P.; Jaroniec, M.; Asefa, T.; Coombs, N.; Ozin, G. A.; Kamiyama, T.; Terasaki, O. “Periodic Mesoporous Organosilica with Large Cagelike Pores.” Chem. Mater. 2002, 14, 1903-1905.
  92. Temtsin, G.; Asefa, T.; Bittner, S.; Ozin, G.A. “Aromatic PMOs: tolyl, xylyl and dimethoxyphenyl groups integrated within the channel walls of hexagonal mesoporous silicas.” J. Mater. Chem. 2001, 11, 3202-3206.
  93. Asefa, T.; Kruk, M.; MacLachln, M.J.; Coombs, N.; Grondey, H.; Jaroniec, M.; Ozin, G. A. “Sequential hydroboration-alcoholysis and epoxidation-ring opening reactions of vinyl groups in mesoporous vinylsilica.” Adv. Funct. Mater. 2001, 11, 447-456.
  94. Asefa, T.; Kruk, M.; MacLachlan, M. J.; Coombs, N.; Grondey, H.; Jaroniec, M.; Ozin, G. A. “Novel Bifunctional Periodic Mesoporous Organosilicas, BPMOs: Synthesis, Characterization, Properties and in-Situ Selective Hydroboration-Alcoholysis Reactions of Functional Groups.” J. Am. Chem. Soc. 2001, 123, 8520-8530.
  95. Dag, O.; Yoshina-Ishii, C.; Asefa, T.; MacLachlan, M. J.; Grondey, H.; Coombs, N.; Ozin, G. A. “Oriented periodic mesoporous organosilica (PMO) film with organic functionality inside the channel walls.” Adv. Funct. Mater. 2001, 11, 213-217.
  96. Asefa, T.; Coombs, N.; Dag, O.; Grondey, H.; MacLachlan, M.J.; Ozin, G.A.; Yoshina-Ishii, C. “Periodic mesoporous organosilicas (PMOs): nanostructured organic-inorganic hybrid materials.” Mater. Res. Soc. Symp. Proc. 2001, 628, CC3.9.1-CC3.9.8.
  97. Asefa, T.; Yoshina-Ishii, C.; MacLachlan, M. J.; Ozin, G. A. “New nanocomposites: putting organic function 'inside' the channel walls of periodic mesoporous silica.” J. Mater. Chem. 2000, 10, 1751-1755. (Among the 10 most accessed articles in 2000 and was on the Front Cover and Cited 136 times to date)
  98. MacLachlan, M. J.; Asefa, T.; Ozin, G. A. “Writing on the wall with a new synthetic quill.” Chem. Eur. J. 2000, 6, 2507-2511. (On Front Cover and Cited 102 times)
  99. Asefa, T.; MacLachlan, M. J.; Grondey, H.; Coombs, N.; Ozin, G. A. Metamorphic channels in periodic mesoporous methylenesilica.” Angew. Chem., Int. Ed. 2000, 39, 1808-1811. (Cited over 171 times to date)
  100. Asefa, T.; MacLachlan, M. J.; Coombs, N.; Ozin, G. A. “Periodic mesoporous organosilicas with organic groups inside the channel walls.” Nature 1999, 402, 867-871. (Cited 736 times to date)
  101. Yoshina-Ishii, C.; Asefa, T.; Coombs, N.; MacLachlan, M. J.; Ozin, G. A. “Periodic mesoporous organosilicas, PMOs: fusion of organic and inorganic chemistry 'inside' the channel walls of hexagonal mesoporous silica.” Chem. Commun. 1999, 2539-2540. (Cited 232 times to date)
  102. Lal, M.; Joshi, M.; Kumar, D. N.; Friend, C. S.; Winiarz, J.; Asefa, T.; Kim, K.; Prasad, P. N. “Inorganic-organic hybrid materials for photonics.” Mater. Res. Soc. Symp. Proc. 1998, 519, 217-225.


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•••• Citations over 700 times in 5 years and Featured in C&E News

••• Cited over 200 times

•• On Front Covers of Journals and Cited over 150 times

• Cited over 60 times

* Among the top most accessed articles in RSC journals in 2000

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Research Areas: 
Inorganic Chemistry
Research Areas: 
Materials Chemistry

Rutgers, The State University of New Jersey