Boosting near-infrared photothermal/photoacoustic conversion performance of anthracene-fused porphyrin via paramagnetic ion coordination strategy  

作　　者：Fan Wu Yufen Sun Hu Gao Xu Zhi Yue Zhao Zhen Shen 

机构地区：[1]State Key Laboratory of Coordination Chemistry,Collaborative Innovation Center of Advanced Microstructure,School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210023,China

出　　处：《Science China Chemistry》2023年第1期164-173,共10页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China(22071103,21911540069 to Z.S.and22001119 to F.W.)。

摘　　要：Designing stable molecules with efficient near-infrared(NIR) photothermal/photoacoustic performances is important for biological and environmental applications.In this article,we inserted paramagnetic Cu(Ⅱ) into tetraanthraporphyrin to generate a highly photostable molecule,Cu ANP,which demonstrated a sharp,intense Q band in the NIR region above 800 nm.Unlike its diamagnetic Zn(Ⅱ)-coordinated analog Zn ANP that degraded rapidly under ambient light,Cu ANP has a low-lying singly unoccupied d orbital that quenched radioactive emission and reactive oxygen generation effectively,resulting in fast photothermal response,excellent photothermal conversion capacity and heat endurance under long-term laser irradiation in an organic solvent,in water after encapsulation as a nanocomposite,and in the solid state.Cu ANP also exhibited an intense NIR photoacoustic response and was reversibly redox-active,displaying a broad band spreading to the NIR-Ⅱ window(700–1,300 nm) in the dicationic state.This paramagnetic metal incorporation strategy can enhance the performance of photolabile NIR absorbing molecules for a variety of photothermal/photoacoustic applications.

关 键 词：PORPHYRINOIDS PHOTOTHERMAL PHOTOACOUSTIC NEAR-INFRARED PARAMAGNETIC 

分 类 号：O641.3[理学—物理化学]