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Optically Active Helical Substituted Polyacetylenes Showing Reversible Helix Inversion in Emulsion and Solution State
Author(s) -
Huang Yingying,
Zhang Yuanyuan,
Yang Wantai,
Deng Jianping
Publication year - 2012
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201100646
Subject(s) - polymer , helix (gastropod) , emulsion , macromolecule , materials science , nanoparticle , optically active , inversion (geology) , chemical physics , chemistry , polymer chemistry , crystallography , photochemistry , nanotechnology , organic chemistry , ecology , paleontology , biochemistry , structural basin , snail , biology
This Communication reports two substituted polyacetylenes that can adopt helical structures of preferential screw sense in both emulsion (nanoparticle) and solution; however, the handedness of the macromolecular helices is just opposite in the two states. More interestingly, the helical screw sense of the polymers demonstrated a reversible transition between the two states. The unprecedented findings are of significant importance for acquiring new insights into helical polymers and for developing novel advanced chiral materials.