Shape/dimension-controllable organic heterostructures from one monomer pair  

作　　者：Yan Chen Xinnan Wang Yifan Lin Chun Liu 

机构地区：[1]Cancer Hospital of Dalian University of Technology,State Key Laboratory of Fine Chemicals,Frontier Science Center for Smart Materials,School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China

出　　处：《Chinese Chemical Letters》2025年第3期239-243,共5页中国化学快报(英文版)

基　　金：financial support from the National Natural Science Foundation of China(No.21978042);the Fundamental Research Funds for the Central Universities(No.DUT22LAB610)。

摘　　要：Controllable construction of organic heterostructures is key to developing supramolecular materials with sophisticated functions.Herein,block heterostructures with controllable shape and dimension have been successfully constructed from one molecular pair of Ir(Ⅲ)complexes 1 and 2 in H_(2)O/CH_(3)CN.Different volume ratios of H_(2)O/CH_(3)CN led to controllable morphologies of assemblies 1 from nanofibers(1NF)to nanosheets(1NS).Through reasonable experimental design,both 1NF and 1NS could be used as seeds to trigger the heterogeneous nucleation-elongation of 2.Finally,unprecedented dual control on the length and width of supramolecular block copolymers from the same monomer pair was realized smoothly.The corresponding heterogeneous nucleation-elongation process was confirmed by time-dependent UV–vis absorption spectra and emission spectra.The components of each segment of the fibrous and sheet-like block copolymers were identified by TEM,SEM,and CLSM.The results reveal that the previously unappreciated solvation effect can serve as a powerful tool to control the morphologies of heterostructures.

关 键 词：Size controllable Organic heterostructure Supramolecular block copolymer Ir(Ⅲ)complex Solvation effect 

分 类 号：O641.3[理学—物理化学] O641[理学—化学]