Poly(quinoxaline-2,3-diyl) as a Multifunctional Chiral Scaffold for Circularly Polarized Luminescent Materials: Color Tuning, Energy Transfer, and Switching of the CPL Handedness
Poly(quinoxaline-2,3-diyl) as a Multifunctional Chiral Scaffold for Circularly Polarized Luminescent Materials: Color Tuning, Energy Transfer, and Switching of the CPL Handedness
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DOI：
10.1021/acsmacrolett.7b00131
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发表时间：
2017-04-01
影响因子：
7.015
通讯作者：
Suginome, Michinori
中科院分区：
文献类型：
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作者：
Nishikawa, Tsuyoshi;Nagata, Yuuya;Suginome, Michinori
随机聚（喹啉-2,3-二酰基）共聚物含有非手性5,8-二酰基喹啉单元和手性(S)-2-丁氧基甲基)，具有圆偏振发光（CPL）。通过改变5,8-二芳基喹啉单元上的芳基取代基，可以完全调节其发光颜色。观察到能量从喹啉主链转移到5,8-二芳基喹啉单元。CPL的手性取决于聚合物主链的螺旋手性，根据手性侧链的不同，可以通过将溶剂从CHCI3改为1,1,2-三氯乙烷或将正辛烷改为环辛烷来改变其手性。
Random poly(quinoxaline-2,3-diyl) copolymers, containing achiral 5,8-diarylquinoxaline units and chiral units bearing (S)-2-butoxymethyl groups, exhibited circularly polarized luminescence (CPL). The emission color was fully tunable by changing the aryl substituents on the 5,8-diarylquinoxaline units. An energy transfer from the quinoxaline main chain to the 5,8-diarylquinoxaline units was observed. The handedness of the CPL was dependent on the helical chirality of the polymer main chain, which could be switched by changing the solvent from CHCI3 to 1,1,2-trichloroethane or n-octane to cyclooctane, depending on the chiral side chain.