摘要
Novel coumarin-iminophosphorane (IPP) fluorophores that have stable resonance contributions from aza-ylides were formed by using the nonhydrolysis Staudinger reaction. The N=P formation reaction kinetics obey the conventional Staudinger reaction. The absorption and emission profiles of the coumarin-IPP derivatives can be fine-tuned: an electron-donating group at PPh3 enhances absorption and fluorescence, whereas an electron-withdrawing group at C-3 drives absorption and emission peaks toward blue-light wavelengths. Two-photon adsorption, accompanied by anti-Stokes fluorescence, is achieved under near-infrared femtosecond laser excitation.
原文 | English |
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頁(從 - 到) | 9361-9366 |
頁數 | 6 |
期刊 | Journal of Organic Chemistry |
卷 | 85 |
發行號 | 14 |
DOIs | |
出版狀態 | Published - 17 7月 2020 |