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Synthesis, characterization, and controlled aggregation of biotemplated polystyrene nanodisks |
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| Authors: | Samuel Tekobo Andrew G. Richter Sergey A. Dergunov Sai Venkatesh Pingali Volker S. Urban Bing Yan Eugene Pinkhassik |
| Affiliation: | 1. Institute for Nanomaterials Development and Innovation at the University of Memphis (INDIUM) and Department of Chemistry, The University of Memphis, 213 Smith Chemistry Building, Memphis, TN, 38152-3550, USA 2. Department of Physics and Astronomy, Valparaiso University, Valparaiso, IN, 46383, USA 3. Center for Structural Molecular Biology, Neutron Scattering Sciences Division, Oak Ridge National Laboratory, MS-6142, PO Box 2008, Oak Ridge, TN, 37831, USA 4. Department of Chemical Biology and Therapeutics, St. Jude Children??s Research Hospital, 9054, M/S 1000, 262 Danny Thomas Place, Memphis, TN, 38105, USA 5. School of Chemistry and Chemical Engineering, Shandong University, Shandong, 250100, China |
| Abstract: | Cross-linked polystyrene nanodisks were prepared by controlled polymerization of styrene and divinylbenzene in the interior of bicelles, discoidal lipid aggregates. Aggregation behavior of polymer nanodisks was studied in water, organic solvents, and solid phase. Nanodisks form stable dispersions in aqueous solutions of surfactants, such as sodium dodecyl sulfate (SDS). Varying SDS/nanodisk ratio allowed us to control the size of nanodisk aggregates. Nanodisks are readily solubilized in nonpolar organic solvents, such as toluene and carbon tetrachloride, to yield stable monodisperse suspensions. These findings open opportunities for creating nanodisk-based nanocomposite materials. Stable nanodisk suspension in toluene enabled small angle neutron scattering (SANS) measurements. SANS data confirmed the nanodisk diameter and allowed accurate measurement of nanodisk thickness (19.5 ± 1.0 Å). In solid phase, nanodisks aggregate in sub-micron platelets. |
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