Non-Exponential Distance Dependence of Bridge-Mediated Electronic Coupling

2006 ◽  
Vol 45 (34) ◽  
pp. 5626-5629 ◽  
Author(s):  
Mattias P. Eng ◽  
Bo Albinsson
Keyword(s):  
Electronic Coupling ◽  
Distance Dependence ◽  
Exponential Distance

RNA-Mediated Electron Transfer: Double Exponential Distance Dependence

2009 ◽  
Vol 131 (37) ◽  
pp. 13188-13189 ◽  
Author(s):  
Kenji Maie ◽  
Kazuyuki Miyagi ◽  
Tadao Takada ◽  
Mitsunobu Nakamura ◽  
Kazushige Yamana
Keyword(s):  
Electron Transfer ◽  
Double Exponential ◽  
Mediated Electron Transfer ◽  
Distance Dependence ◽  
Exponential Distance

scholarly journals Shallow distance-dependent triplet energy migration mediated by endothermic charge-transfer

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Runchen Lai ◽  
Yangyi Liu ◽  
Xiao Luo ◽  
Lan Chen ◽  
Yaoyao Han ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Charge Transfer ◽  
Semiconductor Nanocrystals ◽  
Electronic Coupling ◽  
Alternative Mechanism ◽  
Acceptor Pair ◽  
Triplet Energy ◽  
Distance Dependence ◽  
Donor Acceptor ◽  
Triplet Energy Transfer

AbstractConventional wisdom posits that spin-triplet energy transfer (TET) is only operative over short distances because Dexter-type electronic coupling for TET rapidly decreases with increasing donor acceptor separation. While coherent mechanisms such as super-exchange can enhance the magnitude of electronic coupling, they are equally attenuated with distance. Here, we report endothermic charge-transfer-mediated TET as an alternative mechanism featuring shallow distance-dependence and experimentally demonstrated it using a linked nanocrystal-polyacene donor acceptor pair. Donor-acceptor electronic coupling is quantitatively controlled through wavefunction leakage out of the core/shell semiconductor nanocrystals, while the charge/energy transfer driving force is conserved. Attenuation of the TET rate as a function of shell thickness clearly follows the trend of hole probability density on nanocrystal surfaces rather than the product of electron and hole densities, consistent with endothermic hole-transfer-mediated TET. The shallow distance-dependence afforded by this mechanism enables efficient TET across distances well beyond the nominal range of Dexter or super-exchange paradigms.

scholarly journals Distance Dependence of Electronic Coupling in Rigid, Cofacially Compressed, π-Stacked Organic Mixed-Valence Systems

2020 ◽  
Vol 124 (6) ◽  
pp. 1033-1048
Author(s):  
Hae Won Jung ◽  
Sung Ewn Yoon ◽  
Patrick J. Carroll ◽  
Michael R. Gau ◽  
Michael J. Therien ◽  
...  
Keyword(s):  
Mixed Valence ◽  
Electronic Coupling ◽  
Distance Dependence
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