儿茶酚类化合物普遍存在于自然界,具有多功能性,可参与大多数生化进程.它具有较强的氧化还原性,pH响应性和显著的螯合性;而且儿茶酚中的邻位羟基可通过多种方式与不同材料相互作用,特别是与三价铁离子具有很强的螯合作用.由于儿茶酚类化合物性质的多样性,其可以存在于单分子体系、超分子体系、金属离子络合体系或通过共价键相连的聚合物.儿茶酚的多功能性使其参与多种自然过程,其作用表现在众多方面,从海洋生物的粘附性到对过渡金属的储存均得力于儿茶酚类化合物.由于儿茶酚性质的多样性,引起研究者们的广泛兴趣,近年来对其研究日益增多,旨在制备新型的功能性材料和涂层.%Catechols are found in nature taking part in a remarkably broad scope of biochemical processes and functions. They can establish reversible equilibria at moderate redox potentials and pHs and irreversibly cross-link through complex oxidation mechanisms. Their chelating properties can be greatly exemplified with the binding of Fe3+and the diverse modes of interaction of the vicinal hydroxyl groups with all kinds of surfaces of remarkably different chemical and physical nature. Thanks to this diversity, catechols are found to be present in simple molecular systems, with supramolacular struc-tures, metal ion complexing systems or polymers with covalent bonds. The versatilities, allowed cate-chols to participate in several natural processes and functions that range from the adhesive properties of marine organisms to store some transition metal ions. Therefore, catechol-based systems have in recent years been subjected to intense research, and aimed at mimicking these natural systems in order to de-velop new functional materials and coatings.
展开▼
