Piezochromic materials exhibiting pressure-responsive photoluminescence have emerged as promising candidates for advanced optoelectronic applications.Coordination polymers incorporating copper(I)thiocyanate andπ-conj...Piezochromic materials exhibiting pressure-responsive photoluminescence have emerged as promising candidates for advanced optoelectronic applications.Coordination polymers incorporating copper(I)thiocyanate andπ-conjugated ligands present particular interest due to their structural adaptability and tunable emission properties.We herein report the first comprehensive investigation of the anomalous piezochromic behavior in the coordination polymer[Cu(SCN)(iqi)]n(iqi=isoquinoline),employing in situ high-pressure spectroscopy measurements.The emission intensity of[Cu(SCN)(iqi)]n initially increases,then slightly decreases,followed by a stable plateau,and eventually decreases under compression,accompanied by a red-shift in the emission spectra.Through combined spectral analysis and structural considerations,we attribute this unique behavior to the pressure-induced interplay between enhanced charge transfer efficiency and structural deformation.Our findings highlight the potential of copper(I)-based coordination polymers as versatile platforms for developing pressure-sensitive optical devices and smart sensory materials.展开更多
基金funded by the Fundamental Research Funds for the Provincial Universities(JYT2024019)the National Natural Science Foundation of China(12304017)+3 种基金the Program of China Postdoctoral Science Foundation(2023M741351)the Science Research Project of Hebei Education Department(QN2025133)the Innovation and Entrepreneurship Training Program for College Students of Hebei North University(XJ2024064)the Open Project of State Key Laboratory of High Pressure and Superhard Materials(Jilin University)(202309).
文摘Piezochromic materials exhibiting pressure-responsive photoluminescence have emerged as promising candidates for advanced optoelectronic applications.Coordination polymers incorporating copper(I)thiocyanate andπ-conjugated ligands present particular interest due to their structural adaptability and tunable emission properties.We herein report the first comprehensive investigation of the anomalous piezochromic behavior in the coordination polymer[Cu(SCN)(iqi)]n(iqi=isoquinoline),employing in situ high-pressure spectroscopy measurements.The emission intensity of[Cu(SCN)(iqi)]n initially increases,then slightly decreases,followed by a stable plateau,and eventually decreases under compression,accompanied by a red-shift in the emission spectra.Through combined spectral analysis and structural considerations,we attribute this unique behavior to the pressure-induced interplay between enhanced charge transfer efficiency and structural deformation.Our findings highlight the potential of copper(I)-based coordination polymers as versatile platforms for developing pressure-sensitive optical devices and smart sensory materials.
