期刊
CHEMICAL COMMUNICATIONS
卷 57, 期 15, 页码 1935-1938出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0cc07423c
关键词
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资金
- Natural Science Foundation of China [21673195, 21722305, 21703188, 21933012, 31871877, U1705254, 51403135]
- National Key R&D Program of China [2017YFA0204902]
- Sichuan Science and Technology Program [2019YJ0123]
- Fundamental Research Funds for the Central Universities [20720200068]
- State Key Laboratory of Polymer Materials Engineering [sklpme 2014-3-16]
The presence of intramolecular hydrogen bonds promotes planarization of molecular structure, leading to higher conductance by reducing dihedral twisting. This offers a new strategy for controlling molecular switches through molecular twisting.
Bilactam derivatives with different side groups were synthesized and the twisting angle tuning effect induced by the intramolecular hydrogen bond on the charge transport through their single-molecule junctions was investigated. Molecules with strong intramolecular hydrogen bonds exhibited twice higher conductance because of the reduced dihedral twisting, which was reversible with the addition of hydrogen bond destroying solvent. Our findings reveal that the presence of intramolecular hydrogen bonds promotes the planarization of the molecular structure without additional transmission channels, offering a new strategy for controlling molecular switches via tuning the molecular twisting.
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