A morphology and size-dependent ON-OFF switchable NIR-emitting naphthothiazolium cyanine dye: AIE-active CIEE effect
A morphology and size-dependent ON-OFF switchable NIR-emitting naphthothiazolium cyanine dye: AIE-active CIEE effect
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形态和尺寸依赖性开关可切换近红外发射萘并噻唑花青染料:AIE 活性 CIEE 效应
DOI:
10.1016/j.optmat.2017.03.018
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发表时间:
2017-04
影响因子:
3.9
通讯作者:
Yang Changying
中科院分区:
文献类型:
--
作者:
Yang Wei;Liu Chunlin;Gao Qingyun;Du Jinya;Shen Ping;Liu Yi;Yang Changying
A novel near-infrared (NIR) emitting cyanine dye, 2-[4-N,N-diphenylaminostyryl] -β-naphthothiazolium propylsulfonate (N3), has been newly developed. N3 exhibits striking size-dependent aggregation-induced emission (AIE) characteristic in DMSO/H2O mixtures with water fractions (fw) > 70%. The formation of nanoparticles is advantageous for fluorescence emission, while larger size agglomeration leads to a reduction. In solid,N3shows crystal-induced emission enhancement (CIEE) and its NIR emissive behavior is morphology-dependent. The brightly emissive crystalline powder (λem= 687 nm) (ON state) is transformed into non-emissive amorphous state (OFF state) when grinding. The smart fluorescent ON-OFF properties can be reversibly tuned by grinding and heating or solvent fuming. Possible strategies to construct the physical sensor for pressure or temperature, chemosensor for volatile organic compounds (VOCs), as well as the technology for data storage are disclosed.
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影响因子:
5.7
作者:
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通讯作者:
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作者:
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通讯作者:
Ruggeri, Giacomo
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15
作者:
Browne, Wesley R.;Pollard, Michael M.;Feringa, Ben L.
通讯作者:
Feringa, Ben L.