Light-harvesting organogel based on tris(phenylisoxazolyl)benzene

Light-harvesting organogel based on tris(phenylisoxazolyl)benzene
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基于三(苯基异恶唑基)苯的光捕获有机凝胶

DOI:
10.1080/10610278.2016.1268692
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发表时间:
2017
影响因子:
3.3
通讯作者:
Takeharu Haino
Takeharu Haino
中科院分区:
化学4区
文献类型:
--
作者:
Toshiaki Ikeda;Yuko Ueda;Naomitsu Komori;Manabu Abe;Takeharu Haino

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以三(苯基异恶唑基)苯1为原料,合成了一种新型的捕光有机凝胶。合成了一种芘衍生物2作为能量受体,它具有4个苯基异恶唑取代基。在凝胶状态下,1的电子激发态能量转移到2的一小部分,而在溶液中没有观察到光诱导能量转移。在十氢萘凝胶中形成的1和2的共组装结构表现出捕光行为。对荧光量子产率的研究表明,一个2分子接受大约8个1分子的激发态能量。时间分辨荧光衰减实验表明,在凝胶状态下,荧光共振能量转移是能量转移过程中占主导地位。
A novel light-harvesting organogel based on tris(phenylisoxazolyl)benzene,1, was developed. A pyrene derivative,2, possessing four phenylisoxazole substituents, was synthesised as an energy acceptor. The electronically excited-state energy of1was transferred to a small portion of2in the gel state, whereas the photo-induced energy transfer was not observed in solution. The coassembled structures of1and2, formed in the decalin gel, exhibited light-harvesting behaviour. The study on the fluorescence quantum yield revealed that one molecule of2accepts the excited-state energy from approximately eight molecules of1. Time-resolved fluorescence decay experiments revealed that the fluorescence resonance energy transfer is dominant in the energy transfer process in the gel state.
通过激发能量迁移和转移增强自组装有机纳米粒子的荧光
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