期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 139, 期 20, 页码 7020-7029出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.7b02470
关键词
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资金
- National Natural Science Foundation
- Ministry of Science and Technology of P. R. China [NNSFC21671162, 2016YFA-0200700, NNSFC21471126]
- National Thousand Talents Program of P. R. China
- 985 Program of Chemistry and Chemical Engineering disciplines of Xiamen University
- U.S. National Science Foundation [DMR-1308229]
- National Science Foundation [NSF/CHE-1346572]
- U.S. DOE [DE-AC02-06CH11357]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1308229] Funding Source: National Science Foundation
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1346572] Funding Source: National Science Foundation
The dimensionality dependency of resonance energy transfer is of great interest due to its importance in understanding energy transfer on cell membranes and in low-dimension nanostructures. Light harvesting two-dimensional metal organic layers (2D-MOLs) and three-dimensional metal organic frameworks (3D-MOFs) provide comparative models to study such dimensionality dependence with molecular accuracy. Here we report the construction of 2D-MOLs and 3D-MOFs from a donor ligand 4,4',4-(benzene-1,3,5-triyl-tris(ethyne-2,l-diyl))tribenzoate (BTE) and a doped acceptor ligand 3,3',3-nitro-4,4',4-(benzene-1,3,5-triyl-tris(ethyne-2,1-diyl))tribenzoate (BTE-NO2). These 2D-MOLs and 3D-MOFs are connected by similar hafnium dusters, with key differences in the topology and dimensionality of the metal ligand connection. Energy transfer from donors to acceptors through the 2D-MOL or 3D-MOF skeletons is revealed by measuring and modeling the fluorescence quenching of the donors. We found that energy transfet in 3D-MOFs is more efficient than that in 2D-MOLs, but excitons on 2D-MOLs are more accessible to external quenchers as compared with those in 3D-MOFs. These results not only provide support to theoretical analysis of energy transfer in low dimensions, but also present opportunities to use efficient exciton migration in 2D materials for light-harvesting and fluorescence sensing.
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