Intelligent light-responsive and ionic polymer functionalized polyacrylonitrile as an environmental benign catalyst for selective oxidation of benzyl alcohols

Research Progress of Functional Polyacrylonitrile Fiber in Promoting Organic Reaction

“…张文勤课题组 [1] 制备了具有极性可调表面微环境的 PANF 负载磷酸催化剂 PAN EAP F (18), 并将其应用在 β-酮酯与 2-氨基苯甲酰胺的环缩合合成喹唑啉酮的反应 中(Eq. 12).…”

“…4.1 氧化反应 应安国课题组 [18] 通过可逆加成断裂链转移(RAFT) 聚合法将具有可逆光响应特性的螺吡喃和功能性离子 液体 1-乙烯基-3-乙基咪唑作为共轭聚合物接枝到 PANF 上, 随后通过离子交换制备了负载 Keggin 型磷钨酸氢 盐的智能光响应催化剂 PANF@SPA&VImPW (40). 通 过 RAFT 聚合不仅引入了催化活性位点, 还保留了 PANF 的诸多优点, 催化剂被用于醇的氧化反应(Eq.…”

“…有机聚合物载体通常具有成本低和易于修饰 的优点, 聚合物负载的催化剂由于其独特的微环境可以 增强催化活性和反应的选择性 [11] .聚丙烯腈纤维(Polyacrylonitrile fiber, PANF)被称为 人造羊毛, 是人工合成的聚合物材料, 在工业和日常生 活中应用广泛. PANF 广泛应用于服装、储能材料 [12][13] 、 污水净化材料 [14][15] 、化学传感器 [16][17] 及固体催化剂 [18][19] 等领域. 现今, PANF 的应用超出了其在材料科学领域 的一般应用.…”

Electrocarboxylation of Spiropyran Switches through Carbon‐Bromide Bond Cleavage Reaction

“…[12,13] Because of the large change in properties upon photoisomerization, spiropyrans have been exploited for the preparation of a wide variety of smart functional materials whose properties can be very precisely controlled using light as an external stimulus. [14][15][16][17][18] For most of these applications, the photoswitchable molecules must be covalently attached to the final materials, such as polymers, [19][20][21] nanoparticles, [22,23] biomacromolecules [24,25] and surfaces, [26,27] which requires the introduction of suitable groups in spiropyrans to ensure chemical functionalization. Carboxylic acid groups are amongst the most preferred for this purpose, as they confer molecules with a broad reactivity that enables the covalent bonding to substrates by simple coupling reactions (e. g., amide bond formation).…”

“…For most of these applications, the photoswitchable molecules must be covalently attached to the final materials, such as polymers, [19–21] nanoparticles, [22,23] biomacromolecules [24,25] and surfaces, [26,27] which requires the introduction of suitable groups in spiropyrans to ensure chemical functionalization. Carboxylic acid groups are amongst the most preferred for this purpose, as they confer molecules with a broad reactivity that enables the covalent bonding to substrates by simple coupling reactions (e. g., amide bond formation) [26,28,29] .…”