Metal ion-promoted fabrication of melanin-like poly(L-DOPA)nanoparticles for photothermal actuation  

作　　者：Xianheng Wang Lei Yang Peng Yang Wancai Guo Quan-Ping Zhang Xianhu Liu Yiwen Li 

机构地区：[1]College of Polymer Science and Engineering,State Key Laboratory of Polymer Materials Engineering,Sichuan University,Chengdu 610065,China [2]State Key Laboratory of Environment-Friendly Energy Materials,Southwest University of Science and Technology,Mianyang 621010,China [3]National Engineering Research Center for Advanced Polymer Processing Technology,Zhengzhou University,Zhengzhou 450002,China

出　　处：《Science China Chemistry》2020年第9期1295-1305,共11页中国科学（化学英文版）

基　　金：the National Natural Science Foundation of China(21774079;21975167);the National Key R&D Program of China(2019YFA0904500);the State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials;Southwest University of Science and Technology(17kffk07);the Fundamental Research Funds for Central Universities。

摘　　要：Melanin-inspired polymers are currently the focus of growing interest for a wide range of applications ranging from energy to biomedical area.Whilst researchers have made numerous attempts to prepare and utilize polydopamine nanoparticles(PDA NPs),they have made limited progress in developing and discovering another typical functional mimic of natural melanin,poly(levodopa)(P(L-DOPA))NPs,probably due to the lack of facile synthetic strategies towards satisfactory structural and functional control of melanin-like NPs.Herein,we reported a one-pot preparation method towards P(L-DOPA)NPs with good yields and controllable size/property in an aqueous solution assisted by various metal ions(i.e.,Ni(II),Mg(II),Ca(II),Fe(III),Mn(II),Co(II),Zn(II)and Cd(II)).Interestingly,the resulting P(L-DOPA)NPs exhibited enhanced light absorption and photothermal behaviors compared with well-established PDA NPs,which can be employed to further fabricate kinds of photothermal composite actuators with promising performances such as folding,switching,and forward-moving.This study offers a facile and robust way to synthesize new synthetic melanins beyond PDA,and facilitates further functional discovery and evolution of melanin-inspired polymers and composites.

关 键 词：MELANIN poly(L-DOPA)nanoparticle metal ion PHOTOTHERMAL actuator 

分 类 号：TQ317[化学工程—高聚物工业]