通过自分类构筑以两种分立金属有机大环为交联点的超分子聚合物凝胶

发布时间：2018-02-12 11:34

本文关键词： 超分子聚合物凝胶配位键导向自组装主客体作用自分类　出处：《高分子学报》2017年01期 　论文类型：期刊论文

【摘要】：通过合理分子设计,合成了分别含有柱芳烃主体基元和氰基客体基元且具有不同尺寸的吡啶给体D1和D2,同时选择120?双铂金属盐A作为受体,从三组分出发,通过"一锅法"配位键导向自组装,自分类得到分别含有3个柱[5]芳烃单元的金属有机大环H和含有3个氰基中性客体的金属有机大环G.随着体系浓度增大,通过柱芳烃共价大环与中性氰基客体之间主客相互作用,逐级自组装形成以2种分立金属有机大环为交联点的新型超分子聚合物.所得到的超分子聚合物通过变浓度核磁氢谱(1H-NMR)、动态光散射(DLS)、二维核磁扩散序谱(DOSY)、扫描电镜(SEM)等进行了表征.有趣的是,进一步增加浓度(9.9 wt%),超分子聚合物转化成超分子聚合物凝胶,并且在温度、中性有机小分子及卤素离子等多重刺激下实现凝胶-溶液的可逆转化.
[Abstract]:By reasonable molecular design, pyridine donor D1 and D2 containing column aromatics main unit and cyanide guest unit with different sizes were synthesized respectively. At the same time, 120? Diplatinum salt A as a receptor, starting from three components, through the "one pot" coordination bond directed to self-assembly, The organometallic macrocyclic H containing three column [5] aromatics units and the organometalorganic macrocyclic G containing three cyanide neutral guest were obtained by self-classification. By means of the host and guest interaction between the covalent macroring and the neutral cyano guest of a column aromatic hydrocarbon, A new type of supramolecular polymer with two discrete organometallic macrorings as the crosslinking point was formed by stepwise self-assembly. The obtained supramolecular polymer was obtained by 1H-NMRN NMR with variable concentration, dynamic light scattering (DLS), two dimensional nuclear magnetic diffusion sequence spectroscopy (DDOSYN), and scanning electricity. And so on. Interestingly, In addition, the supramolecular polymers were transformed into supramolecular polymer gels by increasing the concentration of 9. 9 wtg, and the gel-solution reversible transformation was realized under the multiple stimuli of temperature, neutral organic small molecules and halogen ions.
【作者单位】：华东师范大学化学与分子工程学院;
【基金】：国家自然科学基金(基金号21322206和21132005)资助项目
【分类号】：O648.17;O641.3

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