Charge transfer states impact the triplet pair dynamics of singlet fission polymers

2020 ◽  
Vol 153 (24) ◽  
pp. 244902
Author(s):  
Guiying He ◽  
Erik Busby ◽  
Kannatassen Appavoo ◽  
Qin Wu ◽  
Jianlong Xia ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Singlet Fission ◽  
Triplet Pair

Thermal Annealing of Singlet Fission Microcrystals Reveals the Benefits of Charge Transfer Couplings and Slip-Stacked Packing

2020 ◽  
Vol 124 (28) ◽  
pp. 15123-15131
Author(s):  
Zachary T. Armstrong ◽  
Miriam Bohlmann Kunz ◽  
Andrew C. Jones ◽  
Martin T. Zanni
Keyword(s):  
Charge Transfer ◽  
Thermal Annealing ◽  
Singlet Fission

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

scholarly journals Tuning the charge transfer character of the multiexciton state in singlet fission

2020 ◽  
Vol 153 (9) ◽  
pp. 094302 ◽  
Author(s):  
Michelle Chen ◽  
Jae Yoon Shin ◽  
Ryan M. Young ◽  
Michael R. Wasielewski
Keyword(s):  
Charge Transfer ◽  
Singlet Fission

scholarly journals Uncovering dark multichromophoric states in Peridinin–Chlorophyll–Protein

2020 ◽  
Vol 17 (164) ◽  
pp. 20190736
Author(s):  
Elliot J. Taffet ◽  
Francesca Fassioli ◽  
Zi S. D. Toa ◽  
David Beljonne ◽  
Gregory D. Scholes
Keyword(s):  
Crystal Structure ◽  
Excited States ◽  
Quantum Chemical ◽  
Light Harvesting ◽  
Singlet Fission ◽  
Chlorophyll Protein ◽  
Triplet Pair ◽  
A Charge ◽  
Hole Generation ◽  
Chemical Evidence

It has long been recognized that visible light harvesting in Peridinin–Chlorophyll–Protein is driven by the interplay between the bright (S 2 ) and dark (S 1 ) states of peridinin (carotenoid), along with the lowest-lying bright (Q y ) and dark (Q x ) states of chlorophyll- a . Here, we analyse a chromophore cluster in the crystal structure of Peridinin–Chlorophyll–Protein, in particular, a peridinin–peridinin and a peridinin–chlorophyll- a dimer, and present quantum chemical evidence for excited states that exist beyond the confines of single peridinin and chlorophyll chromophores. These dark multichromophoric states, emanating from the intermolecular packing native to Peridinin–Chlorophyll–Protein, include a correlated triplet pair comprising neighbouring peridinin excitations and a charge-transfer interaction between peridinin and the adjacent chlorophyll- a . We surmise that such dark multichromophoric states may explain two spectral mysteries in light-harvesting pigments: the sub-200-fs singlet fission observed in carotenoid aggregates, and the sub-200-fs chlorophyll- a hole generation in Peridinin–Chlorophyll–Protein.

scholarly journals Femtosecond stimulated Raman evidence for charge-transfer character in pentacene singlet fission

2018 ◽  
Vol 9 (5) ◽  
pp. 1242-1250 ◽  
Author(s):  
Stephanie M. Hart ◽  
W. Ruchira Silva ◽  
Renee R. Frontiera
Keyword(s):  
Charge Transfer ◽  
Singlet Fission ◽  
Cationic Species ◽  
Stimulated Raman

Evidence for transient anionic and cationic species in singlet fission is given by ultrafast Raman measurements.

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 Charge-Transfer Character in a Covalent Diketopyrrolopyrrole Dimer: Implications for Singlet Fission

ChemPhotoChem ◽  
2017 ◽  
Vol 2 (3) ◽  
pp. 223-233 ◽  
Author(s):  
Catherine M. Mauck ◽  
Youn Jue Bae ◽  
Michelle Chen ◽  
Natalia Powers-Riggs ◽  
Yi-Lin Wu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Singlet Fission
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