Self-assembly of chiral star-shaped oligo(p-phenylene vinylene) substituted hexaarylbenzenes

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Abstract

Self-assembly is a promising approach for the construction of nano-sized objects with a specific function. Recently, we have reported on a star-shaped oligo(p-phenylene vinylene) (OPV) substituted hexaarylbenzene in which the no. of OPV segments is increased to six, and the propeller-like structure resulted in more stable stacks in alkane solvents. The stability of the assemblies enabled the use of size exclusion chromatog. (SEC) to study the monomer content in addn. to the normally applied temp. and concn. dependent optical techniques, which mainly probe the assembly characteristics. The formation of two types of assemblies, as visualized with CD spectroscopy, allowed for the visualization of a bimodal distribution in the SEC trace where the two peaks could be assigned to monomers and assemblies by UV/vis spectroscopy. The application of SEC showed for the first time the analogy of the cooperative nucleation-elongation self-assembly mechanism with chain-growth polymn. in covalent polymer chem.
Original languageEnglish
Title of host publicationThe 237th ACS National Meeting, Salt Lake City, UT, March 22-26, 2009
Pages181-182
Number of pages2
Publication statusPublished - 2009
Event237th ACS National Meeting - Salt Lake City, United States
Duration: 22 Mar 200926 Mar 2009

Publication series

NamePMSE Preprints
Volume100
ISSN (Print)1550-6703

Conference

Conference237th ACS National Meeting
Country/TerritoryUnited States
CitySalt Lake City
Period22/03/0926/03/09

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