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Light-harvesting porphyrazines to enable intramolecular singlet fission
被引:15
作者:
Medina, Diana-Paola
[1
]
Papadopoulos, Ilias
[2
,3
]
Lavarda, Giulia
[1
]
Gotfredsen, Henrik
[4
]
Rami, Parisa R.
[5
]
Tykwinski, Rik R.
[5
]
Salome Rodriguez-Morgade, M.
[1
,6
]
Guldi, Dirk M.
[2
,3
]
Torres, Tomas
[1
,6
,7
]
机构:
[1] Univ Autonoma Madrid, Dept Quim Organ, E-28049 Madrid, Spain
[2] Univ Erlangen Nurnberg, Dept Chem & Pharm, Egerlandstr 3, D-91058 Erlangen, Germany
[3] Univ Erlangen Nurnberg, ICMM, Egerlandstr 3, D-91058 Erlangen, Germany
[4] Univ Copenhagen, Dept Chem, Univ Pk 5, DK-2100 Copenhagen, Denmark
[5] Univ Alberta, Dept Chem, Edmonton, AB T6G 2G2, Canada
[6] Univ Autonoma Madrid, Inst Adv Res Chem Sci IAdChem, E-28049 Madrid, Spain
[7] IMDEA Nanociencia, C Faraday 9, Madrid 28049, Spain
来源:
基金:
加拿大自然科学与工程研究理事会;
关键词:
EXCITON FISSION;
THIN-FILMS;
PUSH-PULL;
D O I:
10.1039/c9nr08161e
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
A porphyrazine featuring complementary absorption to a pentacene dimer was chosen to fill the absorption gap of the latter in the range of 450 to 600 nm to realize panchromatic absorption through the visible region out to ca. 700 nm. Of even greater relevance is the quantitative intramolecular Forster resonance energy transfer (i-FRET) to funnel energy to the pentacene moieties, where efficient intramolecular singlet fission (i-SF) converts the singlet excited state into the corresponding triplet excited states. Remarkably, the triplet quantum yield either via direct excitation or via indirect i-FRET is up to 200% +/- 20% in polar solvents.
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页码:22286 / 22292
页数:7
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