A molecular wire: Electron transfer in an acridinium-based triad in various media

被引：0

作者：

Elioff, Michael S. ^{[1
]}

Hu, Jingqiu ^{[2
]}

机构：

[1] Millersville Univ Pennsylvania, Dept Chem, Millersville, PA 17551 USA

[2] West Chester Univ, Dept Chem, W Chester, PA 19320 USA

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2025年 / 462卷

关键词：

Photo-induced electron transfer; Molecular wires; Fluorescence emission; Charge-shift state; Solid matrix; Polymeric medium; POLY(METHACRYLIC ACID); PHOTOINDUCED CHARGE; RADICAL-CATION; STATE; ENERGY; DYADS; ION;

D O I：

10.1016/j.jphotochem.2024.116246

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel acridinium-anilide-bithiophene triad (1) was synthesized and the intramolecular photoinduced electron transfer (PET) in the triad was investigated in various media. In the triad, the acridinium (Ac) is the electron acceptor and the chromophore. The bithiophene and anilide are electron donors. The lifetimes of the charge-shift state (CSH) emission varied from picoseconds in organic solvents to the nanosecond time domain in solid matrix. Long-lived charge separation transient species in the 200-microsecond time domain were observed in a solid glass matrix based on laser flash photolysis experiments. Polymeric media and solid glass matrices were observed to significantly slow the back-electron transfer of the CSH, resulting in stronger CSH emission and longer lifetimes.

引用

页数：11

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