Abstract
A multiply photoactive compound has been developed based on quaternized 1,2-bis(4′-pyridyl)ethylene, which exhibits a hierarchical photoreaction by controlling light intensity. Weak ultraviolet light can effectively promote the cycloaddition reaction with fluorescence enhancement, while stronger ultraviolet light can stimulate a complex response of cycloaddition and electron-transfer which shows turn-off luminescence and coloration. Photofacilitated bleaching of the colored products has been observed for the first time in the pyridinium family.
| Original language | English |
|---|---|
| Pages (from-to) | 9051-9056 |
| Number of pages | 6 |
| Journal | Dalton Transactions |
| Volume | 47 |
| Issue number | 27 |
| DOIs | |
| Publication status | Published - 2018 |