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Photoluminescence and photothermal conversion in boric acid derived carbon dots for targeted microbial theranostics

Chinese Chemical Letters 2024年第9期35卷 232-237页

作者： Yiqiao Chen Ao Liu Biwen Yang Zhenzhen Li Binggang Ye Zhouyi Guo Zhiming Liu Haolin Chen Department of Anesthesiology General Hospital of Southern Theater Command of People’s Liberation ArmyGuangzhou 510010China MOE Key Laboratory of Laser Life Science&Guangdong Provincial Key Laboratory of Laser Life Science College of BiophotonicsSouth China Normal UniversityGuangzhou 510631China Healthy Medical Engineering Technology Research Center Guangdong Food and Drug Vocational CollegeGuangzhou 510520China

theranostic carbon dots(CDs)have attracted widespread attention recently due to their tunable optical properties and diverse *** fluorescent imaging application,the photothermal property endows CDs with the potential for microbial ***,realization of the effective conversion between fluorescence and heat in one CD system has rarely been ***,we provide a simple strategy for targeted microbial theranostics based on 4-carboxyphenylboronic acid-derived CDs(PCBA-CDs)which possess concentration-dependent photoluminescence/photothermal *** lower concentrations,PCBA-CDs show bright and stable fluorescent signals ranging from blue to *** fluorescence intensity gradually decreases with increasing concentration,while on the contrary,the photothermal effect of PCBA-CDs ascends progressively due to the rearrangement of electronic transitions in aggregated ***-CDs also demonstrate high affinity to the polysaccharide structures on the surface of microbe which allows rapid microbial fluorescence imaging as well as specific photothermal ablation of pathogens in skin wounds using PCBA-CDs at lower and higher concentrations,*** study supplies a facile nanotheranostic strategy for just-in-time microbial management using bioactive CDs.

关键词： theranostic carbon dots Fluorescence imaging Phenylboronic acid Photothermal therapy Nanotheranostic

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