Donor-Acceptor Type [5]Helicene Derivative with Strong Circularly Polarized Luminescence
Donor-Acceptor Type [5]Helicene Derivative with Strong Circularly Polarized Luminescence
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DOI：
10.1246/cl.200913
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发表时间：
2021-04-01
影响因子：
1.6
通讯作者：
Matsuda, Kenji
中科院分区：
文献类型：
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作者：
Kubo, Hiromu;Hirose, Takashi;Matsuda, Kenji
未取代螺烯的圆偏振发光(CPL)很弱，因为它们的荧光量子产率(Phi(F))低，不对称因子(g(CPL))小。在本研究中，我们设计并合成了一种供体-受体型[5]螺烯，5，10-dicyano-2，13-bis(3，4，5-tris(n-octyloxy)phenyl)[5]helicene.由于对称性允许跃迁和螺旋结构，该螺烯具有较高的荧光量子产率(Phi(F)=0.63)和良好的垂直条形g(CPL)(4.2×10(-13))。此外，螺烯在保持g(CPL)的同时表现出溶剂型荧光变色。
Circularly polarized luminescence (CPL) of unsubstituted helicenes is weak due to their low fluorescence quantum yield (Phi(f)) and small dissymmetry factor (g(CPL)). In this study, we designed and synthesized a donor-acceptor type [5]helicene, 5,10-dicyano-2,13-bis(3,4,5-tris(n-octyloxy)phenyl)[5]helicene. This helicene showed high fluorescence quantum yield (Phi(f) = 0.63) and good vertical bar g(CPL)vertical bar (4.2 x 10(-13)) due to symmetry-allowed transition and its helical structure. Moreover, the helicene showed solvatofluorochromism while maintaining g(CPL).