Journal
POLYMER
Volume 47, Issue 6, Pages 1875-1885Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2006.01.044
Keywords
chiroptical properties; chiral azobenzene-containing polymers; chiral amplification
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Three oligomeric models (dimer, trimer and tetramer) of optically active methacrylic polymers containing in the side-chain the pyrrolidinyl group of one single configuration linked through the nitrogen atom to the azobenzene chromophore and the related homopolymers in a wide range of average polymerization degree (13 < (X) over bar (n) < 70) and different molecular weight distributions. were synthesized. Their characterization afforded the possibility to investigate the dependence of the properties on the average molecular weight of polymeric derivatives. In particular, the investigation of optical rotation and chiroptical properties by circular dichroism allowed to confirm the conformational origin of chirality in this class of materials as well as to correlate the optical activity to the molecular weight. (c) 2006 Elsevier Ltd. All rights reserved.
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