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Construction and Circularly Polarized Luminescence of Thiophene-Based Multiple Helicenes
Organic Letters ( IF 4.9 ) Pub Date : 2024-11-14 , DOI: 10.1021/acs.orglett.4c03849
Lanping Dang, Wan Xu, Shuai Qiu, Yajie Yu, Zhiying Ma, Lin Yue, Hang Su, Chunli Li, Hua Wang

Thiophene-based monohelicene (TS[7]H), triple helicenes (TT[7]H), and hexapole helicenes (TH[7]H) were synthesized via oxidative photocyclization and cascade Suzuki/intramolecular cyclization as the crucial steps. The enantiomers of TS[7]H, TT[7]H-2, and TH[7]H exhibited circularly polarized luminescence (CPL), and the luminescence dissymmetry factors (glum) gradually increased from −5.1 × 10–4 to −2.0 × 10–3 with an increase in multiplicity from TS[7]H to TH[7]H. In addition, TS[7]H, TT[7]H, and TH[7]H displayed a second-level long afterglow at 77 K.

中文翻译:


噻吩基多螺烯的构建与圆偏振发光



通过氧化光环化和级联 Suzuki/分子内环化合成了硫代苯基单螺旋烯 (TS[7]H)、三螺旋烯 (TT[7]H) 和六极螺旋烯 (TH[7]H) 作为关键步骤。TS[7]HTT[7]H-2TH[7]H 的对映异构体表现出圆偏振发光 (CPL),发光不对称因子 (glum) 从 -5.1 × 10-4 逐渐增加到 -2.0 × 10-3,从 TS[7]HTH[7]H 的多重性增加。此外,TS[7]HTT[7]HTH[7]H 在 77 K 处显示出二级长余辉。
更新日期:2024-11-14
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