期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 139, 期 46, 页码 16502-16505出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.7b10710
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资金
- Swiss National Science Foundation [P2BSP2_168919]
- ERC [320969]
- EPSRC
- Wellcome Trust
- EC H SYNCHRONICS [643238, 642793]
- University of Oxford Advanced Research Computing Service (ARC)
- Oxford University
- EC H MULTI-APP [643238, 642793]
- EPSRC [EP/M016110/1] Funding Source: UKRI
- Swiss National Science Foundation (SNF) [P2BSP2_168919] Funding Source: Swiss National Science Foundation (SNF)
- Engineering and Physical Sciences Research Council [EP/M016110/1] Funding Source: researchfish
The synthesis of ethyne-linked porphyrin nanorings has been achieved by template-directed Sonogashira coupling. The cyclic hexamer and octamer are predicted by density functional theory to adopt low symmetry conformations, due to dihedral twists between neighboring porphyrin units, but their symmetries are effectively D-6h and Dsh, respectively, in solution by H-1 NMR. The fluorescence spectra indicate that the singlet excited states of these nanorings are highly delocalized.
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