Hierarchical metal-peptide assemblies with chirality-encoded spiral architecture and catalytic activity  

作　　者：Jiayu Liu Jiaxing Zhang Liwei Zhang Yuefei Wang Hao Wei Yuhe Shen Jiwei Min Xi Rong Wei Qi Rongxin Su Zhimin He 

机构地区：[1]School of Chemical Engineering and Technology,State Key Laboratory of Chemical Engineering,Tianjin University,Tianjin 300072,China [2]Collaborative Innovation Center of Chemical Science and Engineering(Tianjin),Tianjin 300072,China [3]Tianjin Key Laboratory of Membrane Science and Desalination Technology,Tianjin 300072,China

出　　处：《Science China Chemistry》2023年第1期228-241,共14页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China(21621004,51773149,22078239);Tianjin Development Program for Innovation and Entrepreneurship(2018);the State Key Laboratory of Chemical Engineering(SKL-Ch E-20Z04,SKLCh E-21T03)。

摘　　要：We report the coordination assembly of the ferrocene-diphenylalanine(Fc-FF)with divalent copper ions(Cu^(2+))into metalpeptide assemblies(MPAs)with hierarchical spiral architectures.The MPA particles are composed of helically organized nanofibers which can be correlated to the logarithmic spirals.The MPAs are hierarchically porous with abundant Fc and Cu2+active sites and show much higher catalytic activity than natural laccase toward the decolorization reaction.Moreover,a series of hierarchical structures of the MPAs can be synthesized by controlling the temperature and enantiomeric excess(ee).The peptide enantiomers with higher ee values will self-assemble into highly complex and ordered structures,which show higher surface area and porosity and thus enhanced catalytic activity compared with those assembled by peptides with lower ee values.The results provide new insights into the vital role of chirality in directing the self-assembly of biomolecules into highly ordered complex functional structures.

关 键 词：PEPTIDE metal coordination spiral particles CHIRALITY CATALYSIS 

分 类 号：O621.251[理学—有机化学]