Reversible Multistimuli-Response Fluorescent Switch Based on Tetraphenylethene-Spiropyran Molecules

Two tetraphenylethene (TPE)‐functionalized spiropyran (SP) molecules with very similar structure were designed and synthesized. The two molecules exhibit aggregation‐induced emission (AIE) properties, as well as multistimuli‐responsive color‐changing properties, such as photochromism and acidchromis...

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Bibliographic Details
Published in:Chemistry : a European journal 2015-01, Vol.21 (3), p.1149-1155
Main Authors: Qi, Qingkai, Qian, Jingyu, Ma, Suqian, Xu, Bin, Zhang, Sean Xiao-An, Tian, Wenjing
Format: Article
Language:English
Subjects:
acidchromism
aggregation induced emission
Chemistry
Emission
Fluorescence
fluorescent switch
Isomerization
Molecular structure
Photochromism
Spiropyrans
Switches
Transformations
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Summary:Two tetraphenylethene (TPE)‐functionalized spiropyran (SP) molecules with very similar structure were designed and synthesized. The two molecules exhibit aggregation‐induced emission (AIE) properties, as well as multistimuli‐responsive color‐changing properties, such as photochromism and acidchromism. The investigation of their different photochromic and acidchromic characteristics and dual‐response fluorescent switch during isomerization indicated that the different link position between TPE and SP will significantly affect the extended π‐conjugated system, resulting in completely different photochromic and acidchromic properties. Unlocking emission: Two tetraphenylethene (TPE)‐functionalized spiropyran (SP) molecules were designed and synthesized that exhibit not only aggregation‐induced emission properties but also multistimuli‐responsive properties, such as photochromism and acidchromism. The reversible and different dual‐response fluorescent switches triggered by UV/Vis and acid/base have been realized during the ring‐closed (CF) to ring‐open (OF) transformation (see scheme).
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201405426