Thermoluminescence: theory
Thermoluminescence: theory
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热释光：理论
DOI：
10.1007/s11120-009-9437-z
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发表时间：
2009
影响因子：
3.7
通讯作者：
J. Lavergne
中科院分区：
文献类型：
--
作者：
F. Rappaport;J. Lavergne
热释光（TL）探测随着温度升高，与自由基对的脱陷相关的发光发射。这种技术已被证明是有用的表征的能量安排的辅因子在光合反应中心。在最初的热释光理论中，源于固态物理学，自由基对复合被认为与发光过程一致。然而，在光合系统中，复合通过各种途径发生，其中辐射途径通常代表相对较小的泄漏，理论框架必须相应地修改。辐射途径是具有最大活化能的途径，因此在低温下（仍然）更不利，使得在加热过程期间，TL峰倾向于滞后于自由基对的衰变。结果是，积分发光发射随加热速率而增加。在这篇文章中，我们研究如何TL发射的特性取决于氧化还原电位的辅因子，表现出良好的理论和实验研究之间的协议光系统（PS）II突变体。我们还分析了捕光色素天线的连接性对（热）发光的影响，并表明，虽然这会在室温下显着影响发光动力学，但对TL的影响预计很小。
Thermoluminescence (TL) probes the emission of luminescence associated with the de-trapping of a radical pair as the temperature is increased. This technique has proved useful for characterizing the energetic arrangement of cofactors in photosynthetic reaction centers. In the original TL theory, stemming from solid-state physics, the radical pair recombination was considered to coincide with the light-emitting process. In photosynthetic systems, however, recombination takes place through various routes among which the radiative pathway generally represents a relatively minor leak, and the theoretical framework must be modified accordingly. The radiative route is the one with the largest activation energy and is thus (still) more disfavored at low temperature, so that during the heating process, the TL peak tends to lag behind the decay of the radical pair. A consequence is that the integrated luminescence emission increases with the heating rate. In this article, we examine how the characteristics of the TL emission depend on the redox potentials of the cofactors, showing good agreement between theory and experimental studies on Photosystem (PS) II mutants. We also analyze the effect on (thermo-) luminescence of the connectivity of the light-harvesting pigment antenna, and show that while this should affect significantly luminescence kinetics at room temperature, the effect on TL is expected to be small.
光合作用反应中心的电子转移和蛋白质动力学。
影响因子：
3.4
作者：
McMahon,BH;Müller,JD;Wraight,CA;Nienhaus,GU
通讯作者：
Nienhaus,GU
球形红细菌反应中心早期电子转移过程中的时间依赖性热力学。
影响因子：
2.9
作者：
Peloquin,JM;Williams,JC;Lin,X;Alden,RG;Taguchi,AK;Allen,JP;Woodbury,NW
通讯作者：
Woodbury,NW
集胞藻 D2 蛋白 CD 环区域的突变。
影响因子：
2.9
作者：
Vavilin,DV;Vermaas,WF
通讯作者：
Vermaas,WF