期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 78, 期 22, 页码 11318-11325出版社
AMER CHEMICAL SOC
DOI: 10.1021/jo401808c
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资金
- General Research Fund (GRF) [HKBU 202408]
- Hong Kong Research Grant Council, SAR Hong Kong
- Zhejiang Provincial Natural Science Foundation of China [ZJNSF LY13E030005]
A series of donor-acceptor systems incorporating a carbazole moiety as the donating unit and pyridine moiety as the accepting unit have been designed and synthesized. The spectroscopic and electrochemical behaviors of the carbazole derivatives demonstrate that the carbazole unit interacts with the electron-accepting group through the pi-conjugated spacer, thus leading to the intramolecular charge transfer (ICT). The pyridine-substituted carbazole derivatives show significant sensing and coordinating properties toward a wide range of metal cations. Compound S2 exhibits fluorescence enhancement upon association with transition metal cations, and compound V3 shows high selectivity for Cu2+ among this series of materials. DFT calculations indicate the different association abilities of the dyes and the enhancement of ICT upon addition of the metal cations.
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