Your browser doesn't support javascript.
loading
Switching between Coherent and Incoherent Singlet Fission via Solvent-Induced Symmetry Breaking.
Alvertis, Antonios M; Lukman, Steven; Hele, Timothy J H; Fuemmeler, Eric G; Feng, Jiaqi; Wu, Jishan; Greenham, Neil C; Chin, Alex W; Musser, Andrew J.
Afiliación
  • Alvertis AM; Cavendish Laboratory , University of Cambridge , J. J. Thomson Avenue , Cambridge CB3 0HE , United Kingdom.
  • Lukman S; Institute of Materials Research and Engineering , Agency for Science Technology and Research (A*STAR) , 2 Fusionopolis Way , Singapore 138634 , Singapore.
  • Hele TJH; Cavendish Laboratory , University of Cambridge , J. J. Thomson Avenue , Cambridge CB3 0HE , United Kingdom.
  • Fuemmeler EG; Department of Chemistry and Chemical Biology , Cornell University , Ithaca , New York 14853 , United States.
  • Feng J; Department of Chemistry , National University of Singapore , 3 Science Drive 3 , 117543 Singapore.
  • Wu J; Department of Chemistry , National University of Singapore , 3 Science Drive 3 , 117543 Singapore.
  • Greenham NC; Cavendish Laboratory , University of Cambridge , J. J. Thomson Avenue , Cambridge CB3 0HE , United Kingdom.
  • Chin AW; CNRS & Institut des NanoSciences de Paris , Sorbonne Université , 4 place Jussieu boite courrier 840 , 75252 Paris Cedex 05 , France.
  • Musser AJ; Department of Chemistry and Chemical Biology , Cornell University , Ithaca , New York 14853 , United States.
J Am Chem Soc ; 141(44): 17558-17570, 2019 Nov 06.
Article en En | MEDLINE | ID: mdl-31604015
Singlet fission in organic semiconductors causes a singlet exciton to decay into a pair of triplet excitons and holds potential for increasing the efficiency of photovoltaic devices. In this combined experimental and theoretical study, we reveal that a covalent dimer of the organic semiconductor tetracene undergoes activated singlet fission by qualitatively different mechanisms depending on the solvent environment. We show that intramolecular vibrations are an integral part of this mechanism, giving rise to mixing between charge transfer and triplet pair excitations. Either coherent or incoherent singlet fission can occur, depending on the transient solvent-induced energetic proximity between the states, giving rise to complex variation of the singlet fission mechanism and time scale in the different environments. Our results suggest a more general principle for controlling the efficiency of photochemical reactions by utilizing transient interactions to tune the energetics of reactant and product states and switch between incoherent and coherent dynamics.
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Am Chem Soc Año: 2019 Tipo del documento: Article País de afiliación: Reino Unido Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Am Chem Soc Año: 2019 Tipo del documento: Article País de afiliación: Reino Unido Pais de publicación: Estados Unidos