Boosted Circularly Polarized Luminescence of a Chiral Metallacage Through Co-Assembly in Confined Microfluidic Environments

被引:0
|
作者
Zhao, Jianjian [1 ]
Zeng, Kai [1 ]
Dou, Wei-Tao [1 ]
Zhao, Xiaoli [1 ]
Wang, Wei [1 ]
Shi, Xueliang [1 ]
Li, Xiaodong [2 ]
Fang, Junfeng [2 ]
Qian, Xuhong [1 ]
Yang, Hai-Bo [1 ]
Xu, Lin [1 ]
机构
[1] East China Normal Univ, Shanghai Frontiers Sci Ctr Mol Intelligent Synth, State Key Lab Petr Mol & Proc Engn, Shanghai Key Lab Green Chem & Chem Proc,Sch Chem &, 3663 N Zhongshan Rd, Shanghai 200062, Peoples R China
[2] East China Normal Univ, Engn Res Ctr Nanophoton & Adv Instrument, Sch Phys & Elect Sci, Minist Educ, Shanghai 200241, Peoples R China
基金
中国国家自然科学基金;
关键词
coordination-driven self-assembly; circularly polarized luminescence; metallacage; microfluidics; supramolecular chemistry; LIGHT-HARVESTING SYSTEMS; CAGES; DRIVEN;
D O I
10.1002/adfm.202413920
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Chiral metallacages, with their precisely distributed luminescent and chiral units and inherent adaptive chirality, represent an ideal framework for developing circularly polarized luminescence (CPL)-active materials. Despite their potential, enhancing the luminescence dissymmetry factor (g(lum)) of metallacage-based materials remains a significant challenge. In this study, a useful approach is proposed by co-assembling the chiral donor metallacage Delta(4)/Lambda(4)-Zn(4)A(4) with the achiral acceptor Nile red (NiR), achieving efficient energy and chirality transfer and resulting in enhanced CPL in these co-assemblies. More importantly, microfluidic laminar flow is utilized, known for providing stable driving forces and confined spaces, to achieve a marked improvement in the g(lum) values of these co-assemblies within polymethyl methacrylate (PMMA) films. Computational fluid dynamics (CFD) simulations and small-angle X-ray scattering (SAXS) experiments confirm that films containing Delta(4)/Lambda(4)-Zn(4)A(4)/NiR, prepared via microfluidic chips, display well-defined distributions of metallacages and NiR due to the controllable assembly process facilitated by microfluidic laminar flow. This work pioneers a new methodology to significantly enhance the g(lum) of metallacage-based CPL materials, opening new avenues in the field of chiral photonics.
引用
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页数:14
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