scholarly journals Elucidation of Excitation Energy Dependent Correlated Triplet Pair Formation Pathways in an Endothermic Singlet Fission System

2017 ◽  
Vol 140 (13) ◽  
pp. 4613-4622 ◽  
Author(s):  
Arya Thampi ◽  
Hannah L. Stern ◽  
Alexandre Cheminal ◽  
Murad J. Y. Tayebjee ◽  
Anthony J. Petty ◽  
...  
Keyword(s):  
Excitation Energy ◽  
Pair Formation ◽  
Singlet Fission ◽  
Triplet Pair ◽  
Energy Dependent

scholarly journals Competition between triplet pair formation and excimer-like recombination controls singlet fission yield

2021 ◽  
Vol 2 (2) ◽  
pp. 100339
Author(s):  
Yuqing Huang ◽  
Irina A. Buyanova ◽  
Chanakarn Phansa ◽  
Maria E. Sandoval-Salinas ◽  
David Casanova ◽  
...  
Keyword(s):  
Pair Formation ◽  
Singlet Fission ◽  
Fission Yield ◽  
Triplet Pair

scholarly journals Vibronically coherent ultrafast triplet-pair formation and subsequent thermally activated dissociation control efficient endothermic singlet fission

2017 ◽  
Vol 9 (12) ◽  
pp. 1205-1212 ◽  
Author(s):  
Hannah L. Stern ◽  
Alexandre Cheminal ◽  
Shane R. Yost ◽  
Katharina Broch ◽  
Sam L. Bayliss ◽  
...  
Keyword(s):  
Pair Formation ◽  
Singlet Fission ◽  
Thermally Activated ◽  
Triplet Pair

Two-Dimensional Electronic Spectroscopy Reveals Excitation Energy-Dependent State Mixing during Singlet Fission in a Terrylenediimide Dimer

2018 ◽  
Vol 140 (51) ◽  
pp. 17907-17914 ◽  
Author(s):  
Aritra Mandal ◽  
Michelle Chen ◽  
Eileen D. Foszcz ◽  
Jonathan D. Schultz ◽  
Nicholas M. Kearns ◽  
...  
Keyword(s):  
Excitation Energy ◽  
Electronic Spectroscopy ◽  
Two Dimensional ◽  
Singlet Fission ◽  
State Mixing ◽  
Energy Dependent ◽  
Dependent State

scholarly journals Ultrafast charge transfer dynamics in 2D Covalent Organic Frameworks/Re-complex hybrid photocatalyst for CO2 reduction: hot electrons vs. cold electrons

2021 ◽  
Author(s):  
Qinying Pan ◽  
Mohamed Abdellah ◽  
Yuehan Cao ◽  
Yang Liu ◽  
Weihua Lin ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Excitation Energy ◽  
Co2 Reduction ◽  
Underlying Mechanism ◽  
High Energy ◽  
Hot Electrons ◽  
Covalent Organic Frameworks ◽  
Energy Excitation ◽  
Energy Dependent

Abstract Rhenium(I)-carbonyl-diimine complexes are promising photocatalysts for CO2 reduction. Covalent organic frameworks (COFs) can be perfect sensitizers to enhance the reduction activities. Here we investigated the excited state dynamics of COF (TpBpy) with 2,2'-bipyridine incorporating Re(CO)5Cl (Re-TpBpy) to rationalize the underlying mechanism. The time-dependent DFT calculation first clarified excited state structure of the hybrid catalyst. The studies from transient visible and infrared spectroscopies revealed the excitation energy-dependent photo-induced charge transfer pathways in Re-TpBpy. Under low energy excitation, the electrons at the LUMO level are quickly injected from Bpy into ReI center (1–2 ps) followed by backward recombination (13 ps). Under high energy excitation, the hot-electrons are first injected into the higher unoccupied level of ReI center (1–2 ps) and then slowly relax back to the HOMO in COF (24 ps). There also remains long-lived free electrons in the COF moiety. This explained the excitation energy-dependent CO2 reduction performance in our system.

Ultrafast excited state dynamics of fucoxanthin: excitation energy dependent intramolecular charge transfer dynamics

2011 ◽  
Vol 13 (22) ◽  
pp. 10762 ◽  
Author(s):  
Daisuke Kosumi ◽  
Toshiyuki Kusumoto ◽  
Ritsuko Fujii ◽  
Mitsuru Sugisaki ◽  
Yoshiro Iinuma ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Excitation Energy ◽  
Intramolecular Charge Transfer ◽  
Excited State Dynamics ◽  
Charge Transfer Dynamics ◽  
Energy Dependent

Excitation Energy Dependent Charge Separation at Hole-Transporting Dye/TiO2 Hetero Interface

2012 ◽  
Vol 116 (40) ◽  
pp. 21148-21156 ◽  
Author(s):  
Eva L. Unger ◽  
Tomas Edvinsson ◽  
Joseph D. Roy-Mayhew ◽  
Håkan Rensmo ◽  
Anders Hagfeldt ◽  
...  
Keyword(s):  
Excitation Energy ◽  
Charge Separation ◽  
Hole Transporting ◽  
Energy Dependent

scholarly journals Ultrafast Triplet Pair Separation and Triplet Trapping following Singlet Fission in Amorphous Pentacene Films

2020 ◽  
Vol 124 (43) ◽  
pp. 23567-23578
Author(s):  
Kyle T. Munson ◽  
Jianing Gan ◽  
Christopher Grieco ◽  
Grayson S. Doucette ◽  
John E. Anthony ◽  
...  
Keyword(s):  
Singlet Fission ◽  
Pair Separation ◽  
Triplet Pair
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