Photostability of Phenoxazine Derivatives

被引：0

作者：

Goll, Felix D. ^{[1
]}

Welscher, Philipp J. ^{[1
]}

Bodenmueller, Franz ^{[1
]}

Blinder, Remi ^{[2
]}

Jelezko, Fedor ^{[2
]}

Ziener, Ulrich ^{[1
]}

机构：

[1] Ulm Univ, Inst Organ Chem Macromol Chem & Organ Mat 3, D-89081 Ulm, Germany

[2] Ulm Univ, Inst Quantum Opt, D-89081 Ulm, Germany

来源：

CHEMPHYSCHEM | 2024年 / 25卷 / 21期

关键词：

Heterocycles; Phenoxazine; Photochemistry; Photolysis; Radicals; PHENOTHIAZINE; DECOMPOSITION;

D O I：

10.1002/cphc.202400506

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：

Phenoxazine is a commonly used molecular building block, for example in optoelectronic applications and pharmaceuticals. However, it is highly susceptible to rapid photodegradation, especially in halogenated solvents. In the present study, we identify the degradation products in both halogenated and non-halogenated solvents by UV/Vis absorption, NMR spectroscopy and mass spectrometry. We also propose a substitution strategy aimed at effectively suppressing the high photoreactivity. Kinetic studies show that the quantum yield of photodegradation phi differs by a factor of more than 1000 between trisubstituted derivatives and N-substituted phenoxazine.

引用

页数：7

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