Photocontrolled Aggregation Induced Emission of Hexathiobenzene Hexapyridine in Organic Phase

Lu-lu ZHOU; Bin WU; An-ze LI; Meng-kai LUO; Liang-liang ZHU

doi:10.37188/CJL.20200342

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Photocontrolled Aggregation Induced Emission of Hexathiobenzene Hexapyridine in Organic Phase

Invited Paper | 更新时间：2021-03-19

- Photocontrolled Aggregation Induced Emission of Hexathiobenzene Hexapyridine in Organic Phase
- Chinese Journal of Luminescence Vol. 42, Issue 3, Pages: 296-302(2021)
- 作者机构：
  
  1.复旦大学高分子科学系，聚合物分子工程国家重点实验室，上海　 200438
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(21975046)
- DOI：10.37188/CJL.20200342
  CLC：
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Lu-lu ZHOU, Bin WU, An-ze LI, et al. Photocontrolled Aggregation Induced Emission of Hexathiobenzene Hexapyridine in Organic Phase. [J]. Chinese Journal of Luminescence 42(3):296-302(2021)
DOI：

Lu-lu ZHOU, Bin WU, An-ze LI, et al. Photocontrolled Aggregation Induced Emission of Hexathiobenzene Hexapyridine in Organic Phase. [J]. Chinese Journal of Luminescence 42(3):296-302(2021) DOI： 10.37188/CJL.20200342.

摘要

以六硫苯作为母核，采用多步合成法制得了一种在有机溶剂中具有光控聚集诱导发光(AIE)行为的衍生物六硫苯六吡啶(6SB6Py)。该化合物在无外加能量参与的前提下，可均匀分散于有机溶剂DMF和DMSO中，在此状态下几乎不发光。施加365 nm光照后，两个有机相体系的发光强度均增强5～10倍。其中，6SB6Py的DMF溶液在500 nm处为单峰发射，而6SB6Py的DMSO溶液在420 nm和500 nm处均有发射峰。体系光照前后的核磁对比图几乎无变化，说明365 nm光照并没有使得体系发生传统的光化学反应。动态光散射数据表明，随着光照时间的增加，6SB6Py在溶液中的聚集状态也在不断改变。这说明外加光导致6SB6Py有机溶液发光增强的原因是一种新颖的机制——光激发分子重组，而非光化学反应。

Abstract

A derivative of hexathiobenzene, named hexathiobenzene hexapyridine(6SB6Py) that can exhibit a photocontrolled aggregation-induced emission(AIE) behavior in organic phase, was prepared by a multi-step synthesis method. This compound can be dispersed in organic solvents DMF and DMSO with barely glows. However, the emission intensity is enhanced by 5 to 10 times after 365 nm irradiation. Among them, the DMF solution of 6SB6Py shows a single peak emission at 500 nm, whereas the DMSO solution of 6SB6Py has double emission peaks at both 420 nm and 500 nm. The almost unchanged ,1,H NMR signal before and after irradiation indicates that 365 nm light has not caused a traditional photochemical reaction of this system. Dynamic light scattering data also show the aggregation size of 6SB6Py in the solution is changed with the increase of irradiation time. It suggested that the effect of photoinduced molecular realignment caused the enhanced emission of 6SB6Py by external light in organic solutions, instead of a photochemical reaction.

关键词

聚集诱导发光有机溶剂分散态聚集态光激发分子重组

Keywords

aggregation-induced luminescenceorganic solventsdispersed stateaggregated statephotoinduced molecular realignment

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State Key Laboratory of Molecular Engineering of Polymers， Department of Macromolecular Science， Fudan University

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