Multivalent supramolecular assembly with ultralong organic room temperature phosphorescence, high transfer efficiency and ultrahigh antenna effect in water,Chemical Science

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Multivalent supramolecular assembly with ultralong organic room temperature phosphorescence, high transfer efficiency and ultrahigh antenna effect in water
Chemical Science ( IF 7.6 ) Pub Date : 2021-11-24 , DOI: 10.1039/d1sc05861d
Wei-Lei Zhou _{1,

2} , Wenjing Lin ₁ , Yong Chen ₁ , Xian-Yin Dai ₁ , Zhixue Liu ₁ , Yu Liu ₁

Affiliation

Multivalent supramolecular assemblies have recently attracted extensive attention in the applications of soft materials and cell imaging. Here, we report a novel multivalent supramolecular assembly constructed from 4-(4-bromophenyl)pyridine-1-ium bromide modified hyaluronic acid (HABr), cucurbit[8]uril (CB[8]) and laponite® clay (LP), which could emit purely organic room-temperature phosphorescence (RTP) with a phosphorescence lifetime of up to 4.79 ms in aqueous solution via multivalent supramolecular interactions. By doping the organic dyes rhodamine B (RhB) or sulfonated rhodamine 101 (SR101) into the HABr/CB[8]/LP assembly, phosphorescence energy transfer was realized with high transfer efficiency (energy transfer efficiency = 73–80%) and ultrahigh antenna effect (antenna effect value = 308–362) within the phosphorescent light harvesting system. Moreover, owing to the dynamic nature of the noncovalent interactions, a wide-range spectrum of phosphorescence energy transfer outputs could be obtained not only in water but also on filter paper and a glass plate by adjusting the donor–acceptor ratio and, importantly, white-light emission was obtained, which could be used in the application of information encryption.

中文翻译：

具有超长有机室温磷光、高转移效率和水中超高天线效应的多价超分子组装体

多价超分子组装体最近在软材料和细胞成像的应用中引起了广泛关注。在这里，我们报道了一种由 4-(4-溴苯基)吡啶-1-溴化改性透明质酸 (HABr)、葫芦[8]脲 (CB[8]) 和 laponite® 粘土 (LP) 构成的新型多价超分子组装体，它可以发射纯有机室温磷光（RTP），在水溶液中通过多价超分子相互作用。通过将有机染料罗丹明 B (RhB) 或磺化罗丹明 101 (SR101) 掺杂到 HABr/CB[8]/LP 组件中，实现了磷光能量转移，具有高转移效率（能量转移效率 = 73-80%）和超高磷光收集系统内的天线效应（天线效应值 = 308–362）。此外，由于非共价相互作用的动态特性，不仅可以在水中获得宽范围的磷光能量转移输出，还可以通过调节供体-受体比，更重要的是，白光在滤纸和玻璃板上获得。 - 获得光发射，可用于信息加密应用。

更新日期：2021-12-08

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