Dark-Binding Process Relevant to Preventing Photosensitized Oxidation: Conformation-Dependent Light and Dark Mechanisms by a Dual-Functioning Diketone
Dark-Binding Process Relevant to Preventing Photosensitized Oxidation: Conformation-Dependent Light and Dark Mechanisms by a Dual-Functioning Diketone
复制标题
与防止光敏氧化相关的暗结合过程:双功能二酮的构象依赖性光和暗机制
DOI:
10.1021/acsomega.9b03488
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发表时间:
2019
期刊:
影响因子:
4.1
通讯作者:
Greer, Alexander
中科院分区:
文献类型:
--
作者:
Belh, Sarah J.;Walalawela, Niluksha;Lekhtman, Stas;Greer, Alexander
Few photosensitizers function in both light and dark processes as they usually have no function when the lights are turned off. We hypothesized that light and dark mechanisms in an α-diketone will be decoupled by dihedral rotation in a conformation-dependent binding process. Successful decoupling of these two functions is now shown. Namely,anti-andsyn-skewed conformations of 4,4′-dimethylbenzil promote photosensitized alkoxy radical production, whereas thesynconformation promotes a binding shutoff reaction with trimethyl phosphite. Less rotation of the diketone is better suited to the photosensitizing function since phosphite binding arises through thesynconformer of lower stability. The dual function seen here with the α-diketone is generally not available to sensitizers of limited conformational flexibility, such as porphyrins, phthalocyanines, and fullerenes.
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影响因子:
15
作者:
Ding, BW;Bentrude, WG
通讯作者:
Bentrude, WG
DOI:
--
发表时间:
1990
期刊:
影响因子:
--
作者:
M. R. Mahran;W. Abdou;M. D. Khidre
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--
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1991
期刊:
影响因子:
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M. Abd
DOI:
--
发表时间:
2007
期刊:
影响因子:
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作者:
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