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- W1963704080 abstract "The Sonogashira−Hagihara coupling polymerization of 3′,5′-diiodo-4′-hydroxy-N-α-tert-butoxycarbonyl-d-phenylglycine ethyl-, hexyl-, and laurylamides 1a−c with p-nonsubstituted, cyano, hexyl, and methoxy 3,5-diethynylazobenzenes 2a−d was carried out to obtain optically active novel poly(m-phenyleneethynylene) with Mw values in the range from 6900 to 15 400 in 62−84% yields. CD and UV−vis spectroscopic data indicated that the polymers adopted thermally stable helical conformations in CH2Cl2 and N,N-dimethylformamide. Poly(1b−2a) further formed a chirally aggregated structure. The azobenzene moieties of the polymers underwent reversible photoisomerization upon UV- and visible-light irradiation, accompanying the changes of the higher-order structures." @default.
- W1963704080 created "2016-06-24" @default.
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- W1963704080 date "2011-04-08" @default.
- W1963704080 modified "2023-10-05" @default.
- W1963704080 title "Synthesis, Chiroptical Properties, and Photoresponsiveness of Optically Active Poly(<i>m</i>-phenyleneethynylene)s Containing Azobenzene Moieties" @default.
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- W1963704080 doi "https://doi.org/10.1021/ma200281e" @default.
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