Electron-transfer reactivity of the 2E excited state of trans-diammine(1,4,8,11-tetraazacyclotetradecane)chromium(III)
作者:Andreja Bakac、James H. Espenson
DOI:10.1039/c39900001646
日期:——
Methyl viologen radical cation reduces the 2Eexcitedstate of trans-Cr([14]aneN4)(NH3)23+ in acidic solutions to yield a novel chromium(II) macrocycle, trans-Cr([14]aneN4)(H2O)22+, as a final product.
Estimation of rate constants for near-diffusion-controlled reactions in water at high temperatures
作者:A. John Elliot、David R. McCracken、George V. Buxton、Nicholas D. Wood
DOI:10.1039/ft9908601539
日期:——
methods of estimating rate constants at hightemperatures these rate constants and others in the literature have been fitted to the following equation: kobs=kdiff/(1 +kdiff/kreact), where kobs is the measured rate constant for the bimolecular reaction in solution, kdiff is the encounter rate constant of the two reacting species, and kreact is the rate constant that would be measured if diffusion of the
报道了以下反应在20–200°C的温度范围内测得的速率常数:(a)水合电子与氧气,质子,过氧化氢,硝酸盐,亚硝酸盐,硝基苯和甲基紫精的反应;(b)羟基与另一个羟基和亚铁氰化物的反应;(c)氢原子与高锰酸盐和氧的反应。为了评估在高温下估算速率常数的方法,这些速率常数和文献中的其他速率常数已与以下方程式拟合:k obs = k diff /(1 + k diff / k react),其中kobs是溶液中双分子反应的测量速率常数, k diff是两种反应物质的相遇速率常数, k react是在物质的扩散不影响速率的情况下可以测量的速率常数。除了水合电子与硝酸根离子,亚硝酸根离子和一氧化二氮的反应以外,上述方程式均获得了很好的拟合,结果表明,很少有(如果有的话)与水辐射分解有关的反应是真正的扩散在升高的温度下进行控制。
Strongly Luminescent Gold(III) Complexes with Long-Lived Excited States: High Emission Quantum Yields, Energy Up-Conversion, and Nonlinear Optical Properties
作者:Wai-Pong To、Kaai Tung Chan、Glenna So Ming Tong、Chensheng Ma、Wai-Ming Kwok、Xiangguo Guan、Kam-Hung Low、Chi-Ming Che
DOI:10.1002/anie.201301149
日期:2013.6.24
Photochemistry: A series of emissivegold(III) complexes with fluorene‐containing cyclometalating ligands exhibits strong phosphorescence and long‐lived excitedstates with emissionquantumyields and lifetimes up to 58 % and 305 μs, respectively. These complexes can sensitize energy up‐conversion of 9,10‐diphenylanthracene (DPA; see picture) and display rich two‐photon absorption properties (TPA; TTA=triplet–triplet
Effect of Linker Distribution in the Photocatalytic Activity of Multivariate Mesoporous Crystals
作者:Belén Lerma-Berlanga、Carolina R. Ganivet、Neyvis Almora-Barrios、Sergio Tatay、Yong Peng、Josep Albero、Oscar Fabelo、Javier González-Platas、Hermenegildo García、Natalia M. Padial、Carlos Martí-Gastaldo
DOI:10.1021/jacs.0c09015
日期:2021.2.3
materials are isolated as polycrystalline solids, which are not ideal to decipher the spatial arrangement of parent and exchanged linkers for the formation of homogeneous structures or heterogeneous domains across the solid. Here we use high-throughput methodologies to optimize the synthesis of single crystals of UiO-68 and UiO-68-TZDC, a photoactive analogue based on a tetrazine dicarboxylic derivative
How does methylviologen cation radical supply two electrons to the formate dehydrogenase in the catalytic reduction process of CO<sub>2</sub> to formate?
作者:Akimitsu Miyaji、Yutaka Amao
DOI:10.1039/d0cp02665d
日期:——
revealed an index of affinity of MV+˙ for CbFDH in the CO2 reduction to formate. From the results of the electrochemical analysis, it was predicted that only one molecule of MV+˙ was bound to CbFDH, and the MV bound to CbFDH was to be necessarily re-reduced by the electron source outside of CbFDH to supply the second electron in the CO2 reduction to formate. From the results of docking simulation and density