修车大队一品楼qm论坛51一品茶楼论坛,栖凤楼品茶全国楼凤app软件 ,栖凤阁全国论坛入口,广州百花丛bhc论坛杭州百花坊妃子阁

oe1(光电查) - 科学论文

2 条数据
?? 中文（中国） ▾

  • Carbon Dots as Promising Green Photocatalyst for Free Radical and ATRP-Based Radical?Photopolymerization with Blue LEDs

    摘要： This contribution reports for the first time about the use of carbon dots (CDs) as sensitizer to initiate and activate free radical and controlled radical polymerization based on an ATRP protocol with blue LEDs, respectively. Consideration of diverse heteroatom-doped CDs indicated well-functioning of N-doped CDs as effective photocatalyst and photosensitizer in combination with LEDs emitting either at 405 nm or 470 nm. Initiation of free radical polymerization occurred by combining the CDs with an iodonium or sulfonium salt in tri(propylene glycol) diacrylate. Polymerization of methyl methacrylate (MMA) by photo-induced ATRP was achieved with CDs and ethyl a-bromophenylacetate using Cu(II) as catalyst in the ppm range. The polymers obtained showed temporal control, narrower dispersity ?1.5, and chain-end fidelity. The first order obtained from kinetic slope and ON/OFF experiments additionally approved constant concentration of polymer radicals. No remarkable cytotoxic activity was observed of the CDs underlining their biocompatibility.

    关键词： blue LED,free radical photopolymerization,photo-ATRP,cytotoxicity,Carbon dot

    更新于2025-09-12 10:27:22

  • Carbon Dots as Promising Green Photocatalyst for Free Radical and ATRP‐Based Radical?Photopolymerization with Blue LEDs

    摘要： This contribution reports for the first time about the use of carbon dots (CDs) as sensitizer to initiate and activate free radical and controlled radical polymerization based on an ATRP protocol with blue LEDs, respectively. Consideration of diverse heteroatom-doped CDs indicated well-functioning of N-doped CDs as effective photocatalyst and photosensitizer in combination with LEDs emitting either at 405 nm or 470 nm. Initiation of free radical polymerization occurred by combining the CDs with an iodonium or sulfonium salt in tri(propylene glycol) diacrylate. Polymerization of methyl methacrylate (MMA) by photo-induced ATRP was achieved with CDs and ethyl a-bromophenylacetate using Cu(II) as catalyst in the ppm range. The polymers obtained showed temporal control, narrower dispersity ?1.5, and chain-end fidelity. The first order obtained from kinetic slope and ON/OFF experiments additionally approved constant concentration of polymer radicals. No remarkable cytotoxic activity was observed of the CDs underlining their biocompatibility.

    关键词： blue LED,free radical photopolymerization,photo-ATRP,cytotoxicity,Carbon dot

    更新于2025-09-12 10:27:22