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Chiral silver cluster-based light-harvesting systems: Enantioselective chirality transfer and amplified circularly polarized luminescence
Chem ( IF 23.5 ) Pub Date : 2024-02-21 , DOI: 10.1016/j.chempr.2024.01.028
Ying-Xue Yuan , Jia-Ni Zhang , Jun-Ru Wang , Kai Li , Shuang-Quan Zang

The construction of effective artificial chiral light-harvesting systems (C-LHSs) is significantly important as it provides insights into the hierarchical levels of chirality evolution in natural systems. Herein, we devised pairs of chiral blue emitters, S-/R-binaphthalene dioxygen-N-octadecamidephthalimide (S-/R-BPOA), which function as donors of chirality and light absorbers. S-/R-BPOA co-assembled with enantiomers of atomically precise yellow-emitting subnanometer-scale Ag6 clusters to fabricate C-LHSs. Within these hybrid C-LHSs, we successfully resolved enantioselective chirality/energy transfer that was dependent on the handedness of the components. This promoted the efficient circularly polarized energy transfer in chirality-compatible ensembles, resulting in a remarkable amplification of circularly polarized luminescence (CPL) in the ultrasmall silver cluster. The achieved dissymmetry factor (glum) reached an impressive value of 1.54 × 10−2, and white-light CPL with chromaticity coordinates of (0.32, 0.33) was obtained. Furthermore, the customizable fluorescence and CPL in these C-LHSs bestow them with potential application possibilities in information storage and encryption.



中文翻译:

基于手性银簇的光捕获系统:对映选择性手性转移和放大的圆偏振发光

有效的人工手性光捕获系统( C -LHS)的构建非常重要,因为它提供了对自然系统中手性进化的层次结构的见解。在此,我们设计了成对的手性蓝色发射体,S- / R-联萘二氧-N-十八酰胺邻苯二甲酰亚胺(S- / R -BPOA),其充当手性供体和光吸收剂。S -/ R -BPOA 与原子级精确的发黄光的亚纳米级 Ag 6簇的对映体共同组装,以制造C -LHS。在这些杂化C -LHS中,我们成功地解决了依赖于组件旋向性的对映选择性手性/能量转移。这促进了手性兼容系综中有效的圆偏振能量转移,从而导致超小银团簇中圆偏振发光(CPL)的显着放大。所获得的不对称因子(g lum )达到了令人印象深刻的1.54×10 -2值,并且获得了色品坐标为(0.32,0.33)的白光CPL。此外,这些C -LHS中的可定制荧光和CPL赋予它们在信息存储和加密方面的潜在应用可能性。

更新日期:2024-02-21
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