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    Home > Qu Dahui, Professor of East China University of science and technology, has made important progress in the study of supramolecular chemiluminescence

    Qu Dahui, Professor of East China University of science and technology, has made important progress in the study of supramolecular chemiluminescence

    • Last Update: 2020-01-28
    • Source: Internet
    • Author: User
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    Recently, Qu Dahui, Professor of the school of chemistry and molecular engineering of East China University of science and technology and the joint research center of Nobel Prize scientists in felinga, has made important progress in the research of supramolecular chemiluminescence regulation The relevant research results are published in nature under the title of "color tunable single fluorophore supramolecular system with assembly encoded emission" Communications (NAT commun, 2020, 11, 158) Luminescent controllable fluorescent materials have potential application value in the fields of biological imaging, light-emitting diodes, sensors and optoelectronic devices How to realize the intelligent control of molecular luminescent has always been a research hotspot In recent decades, chemists have developed many intelligent fluorescent materials with controllable fluorescence wavelength and stimulating response However, most of the materials are involved in tedious organic synthesis process, which limits their further application With the development of supramolecular chemistry, chemists have found that host guest interaction, hydrophobic interaction, hydrogen bonding and other supramolecular forces are excellent means to regulate molecular luminescence However, it is still a great challenge to construct intelligent fluorescent materials with tunable emission wavelength by simple and effective methods In this work, the researchers constructed a amphiphilic molecule containing a single fluorescent group by connecting the fluorescent group pyrene to the hydrophilic molecule in the form of hydrazone The luminescent wavelength of this molecule is closely related to the distance between the fluorescent group pyrene The researchers realized the reversible regulation of the distance between the fluorescent group pyrene by the two supramolecular means of hydrophobic force and host guest recognition, and then realized the reversible regulation of its fluorescent color, which can adjust its luminous color from blue to yellow and include white light emission in a large range At the same time, the researchers used the mechanism of slow degradation of cyclodextrin macromolecules by alpha amylase, and achieved the spontaneous dissociation process of supramolecular assemblies under enzyme catalyzed conditions, and then constructed a non-equilibrium dynamic assembly fluorescence system using cyclodextrin as chemical fuel and time "programming", and successfully applied to self erasable gel writing materials The work was completed by Dr Wang Qian and Dr Zhang Qi under the guidance of Professor Qu Dahui, and was carefully guided by academician Tian He The research work has been supported by major projects of NSFC, basic science center, major science and technology projects of Shanghai and key cultivation program of Zhangjiang University of science and technology.
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