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[氧化剂对叶绿素及其类似物的荧光猝灭]

[Fluorescence quenching of chlorophyll and its analogs by oxidants].

作者信息

Kapinus E I, Ivnitskaia I N, Dilung I I

出版信息

Biofizika. 1975 May-Jun;20(3):411-3.

PMID:1138947
Abstract

The quenching of the fluorescence of chlorophyll, Zn- and Cd-pheophytinates, Mg-, Zn-, Cd-, Al-, Ga-, In-, Hf-tetraphenylporphine in different solvents with chlorinanyl, p-benzoquinone and m-dinitrobenzole has been studied. It is concluded from the dependence of quenching on medium viscosity that static and kinamatic mechanisms are in the basis of quenching. The first one dominates within the high values of viscosity, the latter within the law ones. In case of metals on one group the quenching constants are decreased with the growth of the ordinal number of the central atom. This fact supports the great role of the dynamic factor during the quenching of fluorescence of tetrapirrole pigments.

摘要

研究了在不同溶剂中,二氢卟吩、对苯醌和间二硝基苯对叶绿素、锌-和镉-脱镁叶绿素、镁-、锌-、镉-、铝-、镓-、铟-、铪-四苯基卟啉荧光的猝灭作用。根据猝灭对介质粘度的依赖性得出结论,静态和动态机制是猝灭的基础。前者在高粘度值范围内占主导,后者在低粘度值范围内占主导。对于同一族中的金属,猝灭常数随着中心原子序数的增加而降低。这一事实支持了动态因素在四吡咯色素荧光猝灭过程中的重要作用。

相似文献

1
[Fluorescence quenching of chlorophyll and its analogs by oxidants].[氧化剂对叶绿素及其类似物的荧光猝灭]
Biofizika. 1975 May-Jun;20(3):411-3.
2
[Nature of the interaction of excited porphyrin molecules with electron donors and acceptors].[激发态卟啉分子与电子供体和受体的相互作用性质]
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[Nature of the electron-excited state in redox reactions of pigments. I. Photooxidation of chlorophyll a by n-benzoquine].[色素氧化还原反应中电子激发态的本质。I. 叶绿素a被对苯醌光氧化]
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Solvent effect on the physical quenching of singlet molecular oxygen by p-quinones.溶剂对对苯醌猝灭单线态分子氧的物理过程的影响。
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The origins of nonphotochemical quenching of chlorophyll fluorescence in photosynthesis. Direct quenching by P680+ in photosystem II enriched membranes at low pH.光合作用中叶绿素荧光非光化学猝灭的起源。低pH条件下光系统II富集膜中P680+的直接猝灭。
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The change in the acid-base equilibrium of the medium in the interaction of chlorophyll and a number of other pigments and dyes with quinone and hydroquinone.叶绿素以及许多其他色素和染料与醌和对苯二酚相互作用时介质酸碱平衡的变化。
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