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There is now a CONTENT FREEZE for Mercury while we switch to a new platform. It began on Friday, March 10 at 6pm and will end on Wednesday, March 15 at noon. No new content can be created during this time, but all material in the system as of the beginning of the freeze will be migrated to the new platform, including users and groups. Functionally the new site is identical to the old one. webteam@gatech.edu
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Prof. Vladimir Tsukruk, Georgia Tech, Materials Science & Engineering
Assembling highly-branched molecules and nanostructured materials
We discuss recent developments on synthesis, fabrication, and characterization of nanostructured interfaces from polyelectrolytes and highly-branched multifunctional molecules and materials. First, free standing nanocomposite structures were fabricated with layer-by-layer (LbL) assembly from conjugated polyelectrolytes and inorganic nanoparticles1. To this end, we discuss conjugated LbL films2, perforated nanoscale films3, and 2D porous SERS substrates4. Second, we summarize our recent studies of highly branched molecules with multifunctional branched architectures. Here, we show the formation one-dimensional molecular structures from hyperbranched polyol amphiphiles5, peculiar star-shaped aggregates from rod-coil phenylbenzoate molecules6, star molecules as wraps for gold-silver nanocobs as 1D Raman markers7; and amorphous monolayers from amphiphilic bithiophene monodendrons with high quantum yield8.
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1 C. Jiang, V. V. Tsukruk, Adv. Mater., 2006, 18, 829.
2 Y. H. Lin, et. al. Adv. Mater., 2007, 19, 3827.
3 D. Zimnitsky, V. V. Shevchenko, V. V. Tsukruk, Langmuir, 2008, 24, 5996.
4 H. Ko, S. Singamaneni, V. V. Tsukruk, Small, 2008, 4, 1576.
5 M. Ornatska, et. al. J. Am. Chem. Soc., 2004, 126, 9675.
6 K. L. Genson, et. al. NanoLett. 2006, 6, 435.
7 R. Gunawidjaja, et. al. Adv. Mater. 2008, 20, 1544.
8 R. Gunawidjaja, et. al. J. Am. Chem. Soc., 2008, submitted
For more information contact Dr. Kyril Solntsev (404-385-3117) or Prof. Laren Tolbert (404-894-4093).