Suba Asokan

Research Summary

“I work on the Synthesis of Semiconductor Nanoparticles. The focus of the study is the control of size and shape of nanoparticles. The optical and electronic properties of the nanoparticles can be very easily tuned just by altering the size and shape hence the nanoparticles can be put to use in various applications. We have discovered new solvents and the ligands in our study for the same, which make our syntheses reproducible with high yield, economically viable and safe hence facilitating scaling up of the synthesis. Our semiconductor nanoparticles find a variety of applications in electronics and biomedical imaging. We collaborate with people from different fields on different levels and apply the nanoparticles synthesized in our laboratory.”

Publications

  1. B. Sitharaman, S. Asokan, I. Rusakova, M. S. Wong, L. J. Wilson, "Nanoscale aggregation properties of neuroprotective carboxyfullerene (C3) in Aqueous Solution," Nano Lett. 4, 1759-1762, 2004.

  1. K.R.S. Shamsundar, S. Asokan, S. Pal, A constrained variational approach for energy derivatives in Fock-space multireference coupled-cluster theory”, JCP, 120, 6381-6398, 2004.

  1. S. Asokan, A. R. Carreon, Z. Mu, K. M. Krueger, A. Alkhawaldeh, V. L. Colvin, M. S. Wong, “Synthesis of high quality CdSe nanocrystals in heat transfer fluids” Nanotechnology, 16, 2000–2011,   2005.

  1. S. Laus, B. Sitharaman, É. Tóth, R. D. Bolskar, L. Helm, S. Asokan, M. S. Wong, L. J. Wilson, A. E. Merbach, “Destroying gadofullerene aggregates by salt addition in aqueous solution of Gd@C60(OH)x and Gd@C60[C(COOH2)]10” JACS, 127, 9368-9369, 2005.

  1. T. O. Ely, D. Prieto, A. Kumar, W. Guo, W. V. Knowles, S. Asokan, M. S. Wong, I. Rusakova, A. Luttge, and K. H. Whitmire, "Manganese (II) Oxide Nanohexapods: Insight into Controlling the Form of Nanocrystals", Chem. Mater., ASAP Article. 2006.

  1. S. Asokan, K.M. Krueger, V. L. Colvin, M. S. Wong, “Synthesis of CdSe tetrapods using quarternary ammonium salts as ligands”, Small, In print.2007

  1. A. Tuteja, M. E. Mackay, S. Narayanan, S. Asokan, and M. S. Wong, "Breakdown of the Continuum Stokes-Einstein Relation for Nanoparticle Diffusion," Nano Lett. 7, 1276-1281, 2007.

  1. R. S. Krishnan, M. E. Mackay, P. M. Duxbury, A. Pastor, C. J. Hawker, B. Van Horn, S. Asokan, and M. S. Wong, "Self-Assembled Multilayers of Nanocomponents," Nano Lett. 7, 484-489, 2007.

  1. S. Asokan, K. M. Krueger, V. L. Colvin, M. S. Wong, “A general method for the synthesis of anisotropic nanostructures of various compositions”, in preparation.

Selected Conference Presentations

  • Poster on “Synthesis of high quality CdSe nanocrystals in heat transfer fluids” at NanoDays 2004, the third annual CBEN conference on nanotechnology and its applications to bioengineering and environment, held at Rice University, Houston, U

  • Oral presentation on “Synthesis of high quality CdSe nanocrystals in heat transfer fluids” at AICHE 2004, held at Austin, Texas

  • Oral presentation on “Synthesis of high quality CdSe nanocrystals in heat transfer fluids” at SPIE –Photonics West 2006 held at San Jose, California, USA.

  • Poster presentation on “Selective synthesis of high quality CdSe  tetrapod nanocrystals” at ICBN 2006 held at Santa Barbara, California, USA.

  • Oral presentation on “Hot injection synthesis of uniform CdSe tetrapods using quaternary ammonium ligands” at AICHE 2006 held at San Francisco, California, USA.

Honors and Awards

    • Gold medalist of University of Madras for excelling in academics , India (1996–1999

    • Best out going student of Department of chemistry, University of Pune, Pune, India (2001)

    • CBEN Best poster award (second place), Nanodays 2004, Rice University, USA (2004)

    • Best poster award (third place), Nanocongress 2005, Rice University, USA (2005)

    • SPIE Educational Scholarship in Optical Science and Engineering(2006)

    • Harry B. Weiser research award for outstanding research in Chemistry (2007)