Zhang X, Liu Y, Wang X, Liang Y, Yan L. Metallo-supramolecular complexes from mPEG/PDPA diblock copolymers and their self-assembled strip nanosheets.
RSC Adv 2020;
10:9686-9692. [PMID:
35497249 PMCID:
PMC9050140 DOI:
10.1039/d0ra00431f]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 02/27/2020] [Indexed: 01/05/2023] Open
Abstract
Herein we designed and synthesized mPEG/PDPA copolymers containing two 4-([2,2′:6′,2′′-terpyridin]-4′-yl) phenyl (Tpyp) groups at the junction point of the two blocks (mPEG(-b-Tpyp)2-b-PDPAx, x = 23, 33, and 44). Interestingly, after a hierarchical pattern from the coordination of mPEG(-b-Tpyp)2-b-PDPAx with Ru(ii) ions followed by the self-assembly in water, 2D strip nanosheets with a monomolecular layer were obtained. In contrast, mPEG(-b-Tpyp)2-b-PDPAx without coordination self-assembled into spherical micelles in the similar condition. The formation of the rigid and charged ⋯Tpyp-Ru(ii)⋯ chain, the brush-shaped polymer architecture and the presence of the hexafluorophosphate (PF6−) counterions should be responsible for the unique self-assembly behavior of the metallo-supramolecular complexes. It is expected that the hierarchical self-assembly pattern can provide a new strategy for preparation of self-assemblies with different morphologies.
Copolymers mPEG(-b-Tpyp)2-b-PDPAx were synthesized. After a hierarchical pattern from the coordination of the copolymers with Ru(ii) ions followed by the self-assembly in water, 2D strip nanosheets were obtained.![]()
Collapse