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题名: A colour-tunable chiral AIEgen: reversible coordination, enantiomer discrimination and morphology visualization
作者: Roose, Jesse1, 2, 3; Leung, Anakin Chun Sing1, 2, 3; Wang, Jia4; Peng, Qian5; Sung, Herman H. -Y.3; Williams, Ian Duncan3; Tang, Ben Zhong1, 2, 3, 4
刊名: CHEMICAL SCIENCE
发表日期: 2016
卷: 7, 期:9, 页:6106-6114
收录类别: SCI
英文摘要: We present a conceptually new approach to synthesise a boron-containing Aggregation-Induced Emissive Luminogen (AIEgen) with a chiral chromophore. An intramolecular N-B coordinating bond results in a low-energy transition that renders the material red-emissive in a solid state. By competitive binding of nucleophiles to the boron atom, this bond is replaced in favour of an intermolecular coordinating bond, which results in a tremendous blue-shift in both the absorption and emission. A supportive DFT computation elucidates that a breakage of the intramolecular N-B coordinating bond causes a tremendous loss of conjugation in the LUMO, resulting in a larger energy gap. Owing to the fact that our scaffold is intrinsically chiral and Lewis-acidic, we demonstrate how our AIEgen discriminates between two pairs of enantiomers in a simple UV-vis measurement. Furthermore, the binding capabilities are exploited to stain polymer blends that comprised a non-coordinating and a Lewis-basic polymer. The red fluorescence that originates only from domains of the non-coordinating polymer is conveniently detected by a fluorescence microscope. Thus, compared to current analytical methods, we present a cheaper and faster methodology to study the micro-morphologies of certain polymer blends.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35381
Appears in Collections:有机固体实验室_期刊论文

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作者单位: 1.HKUST Shenzhen Res Inst, 9 Yuexing 1st RD,South Area,High Tech Park, Shenzhen 518057, Peoples R China
2.Hong Kong Univ Sci & Technol, Inst Adv Study,Dept Chem,Hong Kong Branch, Inst Mol Funct Mat,Div Biomed Engn,Div Life Sci, Chinese Natl Engn Res Ctr Tissue Restorat & Recon, Kowloon, Hong Kong, Peoples R China
3.Hong Kong Univ Sci & Technol, State Key Lab Mol Neurosci, Kowloon, Hong Kong, Peoples R China
4.South China Univ Technol, State Key Lab Luminescent Mat & Devices, SCUT HKUST Joint Res Lab, Guangdong Innovat Res Team, Guangzhou 510640, Guangdong, Peoples R China
5.Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, Beijing 100190, Peoples R China
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