机械刺激响应性金-磷-硫复合物的可切换荧光

Switchable Fluorescence of a Mechanical Stimulus-Responsive Au-P-S Complex.

作者信息

Huang Jieqiong, Hu Yuanyuan, Xu Wendi, Yang Wei, Lu Chengrong, Young David James, Ren Zhi-Gang

机构信息

Faculty of Environmental Engineering, Suzhou Polytechnic Institute of Agriculture, Suzhou 215008, China.

Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and Devices, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.

出版信息

Molecules. 2024 Dec 5;29(23):5736. doi: 10.3390/molecules29235736.

DOI:10.3390/molecules29235736

PMID:39683895

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11643574/

Abstract

The reaction of [(3-bdppmapy)(AuCl)] with NaHmna (3-bdppmapy = N,N'-bis-(diphenylphosphanylmethyl-3-aminopytidine, Hmna = 2-mercaptonicotinic acid)) resulted in a tetranuclear Au-P-S complex [(3-bdppmapy)(AuHmna)(AuCl)] () which emitted bright yellow fluorescence at 542 nm under 377 nm excitation (QY = 5.3%, = 0.83 ns). Upon grinding, the emission intensity of significantly and rapidly decreased, but could be recovered by exposure to CHCl vapor. This switchable fluorescence is attributed to the breaking and reforming of intermolecular hydrogen bonds with concomitant collapse and the restoration of the crystalline phase, which is not caused by static pressure or increased temperature.

摘要

[(3 - bdppmapy)(AuCl)]与NaHmna（3 - bdppmapy = N,N'-双-(二苯基膦基甲基-3-氨基吡啶)，Hmna = 2-巯基烟酸）反应生成四核金 - 磷 - 硫配合物[(3 - bdppmapy)(AuHmna)(AuCl)]（），其在377nm激发下于542nm处发射亮黄色荧光（量子产率 = 5.3%，寿命 = 0.83纳秒）。研磨后，的发射强度显著且迅速降低，但通过暴露于CHCl蒸汽可恢复。这种可切换荧光归因于分子间氢键的断裂和重新形成，伴随着晶相的坍塌和恢复，这并非由静压或温度升高引起。