A redox catalytic system for oxidation-reduction reactions and the domino preparation of tetrazole compounds from nitro and alcohol precursors was designed, prepared and characterized by UV–vis, GPC, TGA, XRD, EDX, XPS, VSM, FE-SEM, TEM, DLS, BET, NMR, and ICP analyses. The catalyst was prepared via several successive steps by demetalation of chlorophyll b, copolymerization with acrylated TEMPO monomers, complexation with Ni and Co metals (In two different steps), then immobilized on magnetic nanoparticles. The presence of three functional groups including TEMPO, coordinated cobalt, and coordinated nickel in the catalyst, allowed the oxidation of various types of alcohols, alkyl benzenes as well as the reduction of nitro compounds by a single catalyst. All reactions yielded up to 97 % selectivity for oxidation and reduction reactions. Next, the ability of the catalyst to successfully convert alcohol, methyl benzenes and nitro to their corresponding tetrazoles was studied.

设计，制备并表征了用于氧化还原反应的氧化还原催化系统和由硝基和醇前体制备四唑化合物的多米诺骨牌，并通过紫外可见，GPC，TGA，XRD，EDX，XPS，VSM，FE-SEM，TEM， DLS，BET，NMR和ICP分析。通过几个连续的步骤，通过叶绿素b的脱金属制备催化剂，与丙烯酸TEMPO单体共聚，与镍和钴金属络合（在两个不同步骤中），然后固定在磁性纳米粒子上。催化剂中三个官能团（包括TEMPO，配位钴和配位镍）的存在使各种类型的醇，烷基苯氧化并通过单个催化剂还原硝基化合物。所有反应对氧化和还原反应的选择性高达97％。接下来，研究了催化剂成功地将醇，甲基苯和硝基转化为相应的四唑的能力。