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Supramolecular hyperbranched polymers with aggregation-induced emission based on host-enhanced π–π interaction for use as aqueous light-harvesting systems
Dyes and Pigments ( IF 4.1 ) Pub Date : 2017-07-18 , DOI: 10.1016/j.dyepig.2017.07.040
Fei Qiao , Zhao Yuan , Zhe Lian , Chao-Yi Yan , Shuping Zhuo , Zi-Yan Zhou , Ling-Bao Xing

In this work, we report a simple strategy by mixing a naphthyl-substituted tetraphenylethylene derivative (TPE) and cucurbit[8]uril (CB[8]) in aqueous solution, based on the host-guest complexation between CB[8] and TPE, to construct supramolecular hyperbranched polymers. The host-guest interaction between CB[8] and TPE efficiently restricted the intramolecular rotation and the non-radiative relaxation channel, thereby resulting in the strong emission of TPE in dilute solution. We further investigate the self-assembly behaviors of the obtained supramolecular hyperbranched polymers in aqueous solution, which exhibited individual spherical aggregates with the diameter of ∼60 nm. By using the spherical aggregates as energy donors and eosin Y disodium salt (EY) as energy acceptors, we have constructed highly efficient aqueous light-harvesting systems in aqueous solution.



中文翻译:

基于主体增强的π-π相互作用的聚集诱导发射的超分子超支化聚合物,用作水性光收集系统

在这项工作中,我们基于CB [8]和TPE之间的客体-客体复合作用,通过在水溶液中混合萘基取代的四苯基乙烯衍生物(TPE)和葫芦[8]尿素(CB [8])提出了一种简单的策略,以构建超分子超支化聚合物。CB [8]和TPE之间的主客体相互作用有效地限制了分子内旋转和非辐射弛豫通道,从而导致TPE的强发射在稀溶液中。我们进一步研究了所得超分子超支化聚合物在水溶液中的自组装行为,这些聚合物表现出直径约为60 nm的单个球形聚集体。通过使用球形聚集体作为能量供体,并使用曙红Y二钠盐(EY)作为能量受体,我们在水溶液中构建了高效的水性光收集系统。

更新日期:2017-07-18
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