Abreu Carlos M R, Mendonça Patrícia V, Serra Arménio C, Popov Anatoliy V, Matyjaszewski Krzysztof, Guliashvili Tamaz, Coelho Jorge F J
Department of Chemical Engineering, University of Coimbra, Polo II, Pinhal de Marrocos, 3030-790 Coimbra, Portugal.
Chemistry Department, University of Coimbra, 3004-535 Coimbra, Portugal.
ACS Macro Lett. 2012 Nov 20;1(11):1308-1311. doi: 10.1021/mz300458x. Epub 2012 Oct 19.
Inorganic sulfites such as sodium dithionite (NaSO), sodium metabisulfite (NaSO), and sodium bisulfite (NaHSO) have been studied as reducing agents for atom transfer radical polymerization (ATRP). They act not only as very efficient reducing agents but also as supplemental activators for SARA (supplemental activator and reducing agent) ATRP of methyl acrylate in DMSO at ambient temperature. In combination with Cu(II)Br/MeTREN, they produced poly(methyl acrylate) with controlled molecular weight, low dispersity (/ = 1.05), and well-defined chain-end functionality. Sulfites are eco-friendly, approved by FDA as food and beverage additives, and used commercially in many industrial processes.
无机亚硫酸盐，如连二亚硫酸钠（Na₂S₂O₄）、焦亚硫酸钠（Na₂S₂O₅）和亚硫酸氢钠（NaHSO₃），已被作为原子转移自由基聚合（ATRP）的还原剂进行研究。它们不仅是非常有效的还原剂，而且在室温下的二甲基亚砜中，还是丙烯酸甲酯的SARA（补充活化剂和还原剂）ATRP的补充活化剂。与Cu(II)Br/MeTREN组合使用时，它们能制备出分子量可控、分散度低（Đ = 1.05）且链端官能团明确的聚（丙烯酸甲酯）。亚硫酸盐对环境友好，已获美国食品药品监督管理局批准可作为食品和饮料添加剂，并且在许多工业过程中都有商业应用。
