Hydrogen-bonding-induced one-handed helical polynorbornenes appended with chiral alaninegland
- Citation:
- Kao, M-J, Chen C-H, Tsai P-Y, Lim T-S, Lin K-C, Luh T-Y. 2011. Hydrogen-bonding-induced one-handed helical polynorbornenes appended with chiral alaninegland. Macromolecular Chemistry and Physics. 212:2328-2338., Number 21
Abstract:
Polynorbornenes appended with anthracene and chiral alanine linkers are synthesized. Hydrogen bonding between the adjacent bisamidic linkers brings adjacent anthracene chromophores in a more suitable orientation for exciton coupling and renders one-handed helical structures for these polymers. Excimer formation is observed from their emission spectra. Monoamidic linkers provide only one hydrogen bond, which would be less robust and result in much lower circular dichroic response. Hydrogen bonding between the adjacent chiral alanine linkers brings appended anthracene in a more suitable orientation for exciton coupling and excimer formation, rendering one-handed helical structures in polynorbornenes. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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