PMSE 138 |
| Bringing together nanoparticles of intrinsically different functionality constitutes a particularly powerful route to create novel functional materials [1] with synergistic properties found in neither of the constituents. Nanoparticles of different size and functionality (e.g. noble metals, semiconductors, oxides, magnetic alloys) can self-assemble into ordered binary superlattices isostructural to ionic and atomic compounds [2-5]. In the case of NPs, different types (eg Coulombic interactions, dipolar, van der Waals, etc) equally contribute to the nanoparticles interactions that lead to the diversity in binary superlattices [4]. The difficulties encountered in co-crystallizing more than two types of nanoparticle can be overcome by using multicomponent nanoparticles. Do date, multicomponent nanoparticles are represented by several morphologies: (i) dumbbells; (ii) core-shell and recently discovered (iii) hollow core-shell structures. Self-assembly of multicomponent nanoparticles greatly extends the range and combinations of possible materials types which can be intermixed on the nanoscale. In addition to that, adjustments in the nanoparticles composition is expected to allow control over particle-particle interactions. 1. Urban, J. J.; Talapin, D. V.; Shevchenko, E. V.; Murray, C. B. J. Am. Chem. Soc. 2006, 128, 3248. 2. Shevchenko, E. V.; Talapin, D. V.; Kotov, N. A.; O'Brien, S.; Murray, C. B. Nature 2006, 439, 55. 3. Redl, F.X.; Cho, K.-S.; Murray, C.B.;.O'Brien, S.. Nature 2003, 423, 968. 4. Shevchenko, E. V.; Talapin, D. V.; Murray, C. B.; O'Brien, S.. J. Am. Chem. Soc. 2006, 128, 3620. 5. Kalsin, A. M..; Fialkowski, M.; Paszewski, M.; Smoukov, S. K., Bishop, K. J. M. ; Grzybowski, B. A, Science 2006, 312, 420. |
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Synthesis and Self-Assembly Approaches to Polymer-Inorganic Hybrid Nanoparticles
8:30 AM-11:50 AM, Tuesday, April 8, 2008 Hilton New Orleans Riverside -- Grand Salon 24, Oral
Division of Polymeric Materials: Science & Engineering |