化学
光致聚合物
光子上转换
光化学
硫醇
纳米颗粒
烯类反应
纳米技术
有机化学
聚合物
聚合
离子
材料科学
作者
Ren Liu,Xiucheng Zou,Yangyang Xu,Xiaoya Liu,Zhiquan Li
出处
期刊:Chemistry Letters
[The Chemical Society of Japan]
日期:2016-09-05
卷期号:45 (9): 1054-1056
被引量:33
摘要
Thiol-ene photopolymerization has been a versatile tool for polymer synthesis. However, deep photopolymerization of the thiol-ene system still remains a great challenge due to the light-intensity gradient. Using near-infrared light as an excitation source and upconversion nanoparticles as internal lamps, we report a generic and efficient strategy to realize deep thiol-ene photopolymerization. More than 8 cm of photopolymerization depth combined with high functionality conversion was obtained in 40 s. The maximum temperature of about 110 °C during upconversion nanoparticle (UCNP)-assisted photopolymerization is comparable to or lower than that of some reported frontal photopolymerizations applied in the preparation of functional polymer composites and biomaterials.
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