Unraveling the mechanistic origins of efficiency and stereoselectivity in EDA-mediated photocatalysis
Mengchen Fu, Yuanyuan Luo, Luyang Qin, Nicole P Qin, Jialong Jie, Hongmei Su · 2026
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Description
Mengchen Fu, Yuanyuan Luo, and colleagues watch in 2026, in real time, the fleeting excited states that decide whether a light-driven reaction succeeds. Their test bed is a donor-acceptor pair used for making chiral aldehyde products, a method whose efficiency and mirror-selectivity had never been observed directly. Ultrafast laser spectroscopy, on femtosecond and nanosecond scales, supplied the view.
The recordings separated a singlet charge-transfer state, its triplet counterpart, and the radical pair that follows, revealing two radical-making routes running side by side. Fast loss of a bromide ion from one radical prevented wasteful recombination, while the surrounding solvent cage held the partners' orientation long enough for selective coupling. Chemists get a mechanistic blueprint linking how molecules arrange before excitation with how they behave during it.
Catalog record
| CREATOR | Mengchen Fu, Yuanyuan Luo, Luyang Qin, Nicole P Qin, Jialong Jie, Hongmei Su |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 54538 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |