文献类型：期刊文献

英文题名：Complex supramolecular fiber formed by coordination-induced self-assembly of benzene-1,3,5-tricarboxamide (BTA)

作者：Wu, Bohang[1];Liu, Lin[1];Zhou, Lu[1];Magana, Jose Rodrigo[2,3];Hendrix, Marco M. R. M.[2,3];Wang, Jiahua[1];Li, Chendan[1];Ding, Peng[1];Wang, Yiming[1];Guo, Xuhong[1];Voets, Ilja K.[2,3];Stuart, Martien A. Cohen[1];Wang, Junyou[1]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Eindhoven Univ Technol, Dept Chem Engn & Chem, Self Organizing Soft Matter Lab, NL-5612 AZ Eindhoven, Netherlands;[3]Eindhoven Univ Technol, Inst Complex Mol Syst, NL-5612 AZ Eindhoven, Netherlands

年份：2022

卷号：608

起止页码：1297

外文期刊名：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录：;EI(收录号：20214511117631);WOS:【SCI-EXPANDED(收录号:WOS:000744110300006)】；

基金：his work was financially supported by 1000 Foreign Experts Program (WQ20163100341) , the Shanghai Municipal Natural Science Foundation (17ZR1440500, 18490740100) and the Funda-mental Research Funds for the Central Universities (222201714003) . We thank Prof. Rienk Eelkema and Dr. Guotai Li for help with ITC measurement, Dr. Juncheng Liu for suggestions with MS measurement, Dr. Reece Lewis for suggestions with elec-trophoretic mobility measurement, Dr. Georgy Filonenko for help with FT-IR measurement and Dr. Chenxu Yan for suggestions regarding organic synthesis.

语种：英文

外文关键词：Complex supramolecular fiber; Coordination; Benzene-1,3,5-tricarboxamide; Self-assembly

摘要：Hypothesis: In the quest for large but well-controlled supramolecular structures, the discotic benzene1,3,5-tricarboxamide (BTA) has received quite some attention, because it can form hydrogen-bonded stacks that can be regarded as supramolecular polymers of which the single BTA molecule is the monomer. In this report, we consider a more complex BTA-based supramolecular polymer, namely one that is built up from supramolecular 'monomers'. Experiments: We design a tris-ligand L-3 consisting of a BTA core carrying three dipicolinic acid (DPA) groups. L-3 itself is too small to form polymers, but in the presence of appropriate metal ions, each L-3 can form three coordination bonds and so form (L-3)n clusters that are large enough to stack successfully: at an appropriate metal dose, long and stable filaments with a cross-sectional diameter of 12 nm appear. We monitor the growth process by UV-vis spectroscopy and light scattering, and use small angle X-ray scattering (SAXS), TEM as well as molecular simulation to confirm the filamentous structure of the fibers and determine their dimensions. Findings: The formation and structure of the fiber are very similar for various transition metal ions, which enables introducing different functionalities, e.g., magnetic relaxivity, by proper choice of the metal ions. Hence, we obtain a doubly supramolecular polymer, connected axially by hydrogen bonds, and radially by coordination bonds. Not only does this realize a higher level of complexity, but it also allows to easily introduce and vary metal-derived functionalities. (C) 2021 Elsevier Inc. All rights reserved.