Theoretical Study of Solvent Effects on the Electronic Coupling Matrix Element in Rigidly Linked Donor-Acceptor Systems

1995 ◽  
Vol 99 (49) ◽  
pp. 17501-17504 ◽  
Author(s):  
Robert J. Cave ◽  
Marshall D. Newton ◽  
Krishna Kumar ◽  
Matthew B. Zimmt
Keyword(s):  
Matrix Element ◽  
Solvent Effects ◽  
Theoretical Study ◽  
Electronic Coupling ◽  
Coupling Matrix ◽  
Donor Acceptor

Transition Flux Formula for the Electronic Coupling Matrix Element

2015 ◽  
Vol 119 (24) ◽  
pp. 7712-7721 ◽  
Author(s):  
Muhammad A. Hagras ◽  
Alexei A. Stuchebrukhov
Keyword(s):  
Matrix Element ◽  
Electronic Coupling ◽  
Coupling Matrix ◽  
Flux Formula

Semiclassical and quantum-mechanical study of the reaction mechanism for the N2 + N2+ electron transfer system

2003 ◽  
Vol 81 (2) ◽  
pp. 125-132
Author(s):  
Yu-Mei Xing ◽  
Lan Chen ◽  
Chong Zhang ◽  
Zun-Sheng Cai ◽  
Xue-Zhuang Zhao
Keyword(s):  
Electron Transfer ◽  
Matrix Element ◽  
Transfer Reaction ◽  
Electron Transfer Reaction ◽  
Transmission Factor ◽  
Quantum Mechanical ◽  
Electronic Coupling ◽  
Transfer System ◽  
Coupling Matrix ◽  
Electron Transfer System

Density functional theory (DFT) calculations, including electron correlation, were carried out on the N2 + N2+ electron transfer system. Six geometries of the precursor complex were assumed and their stabilities were calculated and compared. The activation energy, the electronic transmission factor, and the electronic coupling matrix element in the electron transfer process were also calculated. The electronic transmission factor for this system was far less than unity (ca. 0.006~0.09); thus, the electron transfer reaction was considered to be diabatic in nature. Therefore, the electron transfer rate for the selected structures was calculated using semiclassical and quantum-mechanical theories. The calculated values were compared with each other and were in good agreement with the experimental value.Key words: N2 + N2+ electron transfer reaction, semiclassical and quantum-mechanical theories, electronic transmission factor, electronic coupling matrix element, B3LYP.

scholarly journals Thermochromic aggregation-induced dual phosphorescence via temperature-dependent sp3-linked donor-acceptor electronic coupling

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Tao Wang ◽  
Zhubin Hu ◽  
Xiancheng Nie ◽  
Linkun Huang ◽  
Miao Hui ◽  
...  
Keyword(s):  
Excited State ◽  
Room Temperature ◽  
Electronic Coupling ◽  
Temperature Dependent ◽  
Molecular Systems ◽  
Donor And Acceptor ◽  
Theoretical Investigations ◽  
Donor Acceptor ◽  
And Control ◽  
Two Temperature

AbstractAggregation-induced emission (AIE) has proven to be a viable strategy to achieve highly efficient room temperature phosphorescence (RTP) in bulk by restricting molecular motions. Here, we show that by utilizing triphenylamine (TPA) as an electronic donor that connects to an acceptor via an sp3 linker, six TPA-based AIE-active RTP luminophores were obtained. Distinct dual phosphorescence bands emitting from largely localized donor and acceptor triplet emitting states could be recorded at lowered temperatures; at room temperature, only a merged RTP band is present. Theoretical investigations reveal that the two temperature-dependent phosphorescence bands both originate from local/global minima from the lowest triplet excited state (T1). The reported molecular construct serves as an intermediary case between a fully conjugated donor-acceptor system and a donor/acceptor binary mix, which may provide important clues on the design and control of high-freedom molecular systems with complex excited-state dynamics.

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