TY - JOUR
T1 - Investigation of photo-responsive chiral polyisocyanates
AU - Li, Jie
AU - Schuster, Gary B.
AU - Green, Mark M.
N1 - Funding Information:
Acknowledgement: This work was supported by the grants from the National Science Foundation, the Office of Naval Research and Molecular Design Institute, for which we are grateful.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2000
Y1 - 2000
N2 - A new class of polyisocyanates incorporating the 8-phenylmethylenebicyclo [3.2.1]octan-3-one chromophore through three different linkage patterns to the polymer backbone was synthesized. Photoresolution and photoracemization experiments were conducted to test its response to circularly polarized light (CPL). Irradiation of the polymers with CPL leads to the partial photoresolution of the bicyclicketone chromophore. This enantiomeric excess causes the polyisocyanate chain to favor one helical sense over the other. The handedness of the polymer chain can be switched with the sense of the circularly polarized light, leading to novel photoresponsive polyisocyanates.
AB - A new class of polyisocyanates incorporating the 8-phenylmethylenebicyclo [3.2.1]octan-3-one chromophore through three different linkage patterns to the polymer backbone was synthesized. Photoresolution and photoracemization experiments were conducted to test its response to circularly polarized light (CPL). Irradiation of the polymers with CPL leads to the partial photoresolution of the bicyclicketone chromophore. This enantiomeric excess causes the polyisocyanate chain to favor one helical sense over the other. The handedness of the polymer chain can be switched with the sense of the circularly polarized light, leading to novel photoresponsive polyisocyanates.
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U2 - 10.1080/10587250008023808
DO - 10.1080/10587250008023808
M3 - Conference article
AN - SCOPUS:0034475373
SN - 1058-725X
VL - 344
SP - 7
EP - 13
JO - Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
JF - Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
T2 - 3rd International Symposium on Organic Photochromism (ISOP99)
Y2 - 14 November 1999 through 18 November 1999
ER -