2020
DOI: 10.1039/c9sc05066c
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Singlet fission in a hexacene dimer: energetics dictate dynamics

Abstract: We report the synthesis and photophysical characterization of highly exoergic singlet fission in a hexacene dimer revealing exciton dynamics that follow the energy gap law.

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Cited by 42 publications
(65 citation statements)
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“…dynamics have widely been studied using the transient absorption spectroscopic methods together with theoretical modeling taking into account the vibronic effects in the ultrafast regimes. [9][10][11][12][13][14][15] The correlated intermolecular triplet pair 1 (TT) generated with the singlet character is known to be converted to the quintet (Q) state as 5 (TT). [16][17][18][19][20][21][22][23][24][25] These TT pairs separate into individual triplets as the T+T state.…”
Section: Toc Graphicsmentioning
confidence: 99%
“…dynamics have widely been studied using the transient absorption spectroscopic methods together with theoretical modeling taking into account the vibronic effects in the ultrafast regimes. [9][10][11][12][13][14][15] The correlated intermolecular triplet pair 1 (TT) generated with the singlet character is known to be converted to the quintet (Q) state as 5 (TT). [16][17][18][19][20][21][22][23][24][25] These TT pairs separate into individual triplets as the T+T state.…”
Section: Toc Graphicsmentioning
confidence: 99%
“…In the meantime, incoherent SF processes have been mostly examined in molecular dimers by changing linkage types between two chromophores to control relative orientations [42–53] . Feng et al.…”
Section: Introductionmentioning
confidence: 99%
“…44,45 The triplet pairs, exhibiting as a singlet state as a whole and makes the fission process spin allowed, play a critical role in the SF process. 29,39,40,[46][47][48][49][50] However, it still remains controversial about the formation and evolution of the triplet pairs during the fission process. [15][16][17][18][19][20][21][22]31,41,[51][52][53][54][55][56] Keeping these in mind, we systematically investigate the excited state dynamics in triisopropylsilylethynyl (TIPS)pentacene thin films by femtosecond (fs) time-resolved transient absorption (TA) spectroscopy.…”
Section: Introductionmentioning
confidence: 99%
“…However, more information related to the properties and dynamics of triplet pairs is still limited, 42,43 which mainly due to their elusiveness in detection 44,45 . The triplet pairs, exhibiting as a singlet state as a whole and makes the fission process spin allowed, play a critical role in the SF process 29,39,40,46‐50 . However, it still remains controversial about the formation and evolution of the triplet pairs during the fission process 15‐22,31,41,51‐56 …”
Section: Introductionmentioning
confidence: 99%