Mechano‐ and Photoresponsive Behavior of a Bis(cyanostyryl)benzene Fluorophore
書誌事項
- タイトル別名
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- Mechano- and Photoresponsive Behavior of a Bis(cyanostyryl)benzene Fluorophore
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The mechanoresponsive behaviour and photochemical response of a new bis(cyanostyryl)benzene fluorophore (CSB-5) were investigated. Green fluorescence with λem,max of 507 nm was found for CSB-5 in chloroform solution, mirroring the behaviour of a previously reported similar dye (CSB-6).On the other hand, crystalline samples of CSB-5 exhibited orange fluorescence with λem,max of 620 nm, attributable to excimer emission.Although the emission color change was not clearly noticeable by naked eye, CSB-5 exhibited mechanochromic luminescence, due to transformation into the amorphous state upon grinding the crystalline powder.Interestingly, rubbed films of CSB-5 prepared on glass substrates exhibited a pronounced emission color change from orange to green when exposed to UV light.This response is the result of a photochemical reaction that occurs in the amorphous state and which causes a decrease of the excimer emission sites so that the emission color changes from excimer to monomer.The crystalline material did not display such a photoinduced emission color change and the difference in photochemical reactivity between crystalline and amorphous states was exploited to pattern the emission color of rubbed films.
収録刊行物
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- Chemistry A European Journal
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Chemistry A European Journal 25 (24), 6162-6169, 2019-03-12
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詳細情報 詳細情報について
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- CRID
- 1050282677541040256
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- NII論文ID
- 120006630169
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- NII書誌ID
- AA11617391
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- ISSN
- 15213765
- 09476539
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- HANDLE
- 10258/00009884
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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