木质素的闪蒸光解:ii -二氧六烷-木质素的氧化光降解

Polymer Photochemistry Pub Date : 1986-01-01 DOI:10.1016/0144-2880(86)90015-1

Miguel G. Neumann, Robert A.M.C. De Groote, Antonio E.H. Machado

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引用次数: 15

摘要

低分子量二氧环木质素在氧存在下的闪光分解表现出与脱气溶液相同的瞬态光谱。在DABCO(1,4-重氮杂环(2,2,2)辛烷)(单线态氧清除剂)和抗坏血酸(自由基清除剂)存在下进行的实验表明，基态氧是参与这些过程的主要物种。单线态氧被羰基以外的物质敏化，可能在反应的后期阶段起作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Flash photolysis of lignin: II—Oxidative photodegradation of dioxane-lignin

The flash photolysis of a low molecular weight dioxane-lignin in the presence of oxygen showed the same transient spectrum as de-aerated solutions. Experiments performed in the presence of DABCO (1,4-diazabicyclo(2,2,2)octane) (a singlet oxygen scavenger) and ascorbic acid (a radical scavenger) showed that ground state oxygen is the main species participating in these processes. Singlet oxygen, sensitized by species other than carbonyls, may play a role in later stages of the reaction.

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