期刊
CATALYSIS SCIENCE & TECHNOLOGY
卷 11, 期 18, 页码 6048-6052出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1cy01071a
关键词
-
资金
- Research and Innovation Staff Exchange (RISE) BIODEST project [H2020-MSCA-RISE-2017-778092]
- FNRS [PDR T.0102.18]
The azobenzene-bridged 15-crown-5 ether was successfully utilized as a photoswitchable cocatalyst to modulate the catalytic activity of potassium acetate in the ring-opening polymerization of L-lactide. By alternating exposure to daylight and UV light, the ion pair-like structure of KOAc was transformed on-demand, resulting in effective modulation of the polymerization speed from slow to fast.
An azobenzene-bridged 15-crown-5 ether (1) was successfully used as a photoswitchable cocatalyst for modulating the catalytic activity of potassium acetate (KOAc) in the ring-opening polymerization (ROP) of L-lactide (L-LA) when initiated from an exogenous alcohol. By alternating exposure to daylight and UV light, 1 transforms the K+,Ac- ion pair-like in free ions ondemand, resulting in an effective form of the catalytic complex. This allows the modulation of the L-LA ROP speed, switching the process from a slow to a fast state.
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