接受者
光热治疗
电子受体
光化学
猝灭(荧光)
聚乙烯亚胺
聚集诱导发射
化学
材料科学
纳米技术
荧光
光学
物理
转染
生物化学
凝聚态物理
基因
作者
Shiping Yang,Jianyu Zhang,Zhijun Zhang,Weilin Xu,Miaomiao Kang,Xue Li,Dingyuan Yan,Ryan T. K. Kwok,Jianwei Sun,Jacky W. Y. Lam,Dong Wang,BenZhong Tang
标识
DOI:10.26434/chemrxiv-2022-89q4q-v2
摘要
The manipulation of electron donor/acceptor (D/A) shows endless impetus for innovating optoelectronic materials. Because of the diversity of electron-donating species, the study on donor engineering has explored systematically, whereas the research on electron acceptor engineering received a snub by contrast. Inspired by the philosophical idea of “more is different”, two systems with D−D−A−D−D (1A system) and D−D−A−A−D−D (2A system) structures based on the acceptor engineering were ingeniously designed and studied. It was demonstrated that the 1A system presented a weak aggregation-induced emission (AIE) to aggregation-caused quenching (ACQ) phenomenon along with the increased acceptor electrophilicity. Interestingly, the 2A system exhibited an opposite ACQ-to-AIE transformation, manifesting the dual-acceptor tactic could facilitate AIE activity. Owing to the highest molar absorptivity, second near-infrared emission, superior AIE property, favorable production ability of reactive oxygen species and excellent photothermal conversion efficiency, a representative member of 2A system handily performed in multimodal imaging-guided photodynamic-photothermal synergetic therapy for efficient tumor elimination.
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