Programmable Macroscopic Supramolecular Assembly through Combined Molecular Recognition and Magnetic Field-Assisted Localization

Abstract

Macroscopic supramolecular assembly is a promising bottom-up method to construct ordered three-dimensional structures in a programmable way because of its flexible tailoring features. To handle the challenges of precisely aligning the building blocks, we proposed the combination of magnetic field-assisted localization for the locomotion of building blocks and host/guest supramolecular recognition for their immobilization. By applying this strategy, we have realized the stepwise construction of microscale glass fibers into an ordered complex pattern. Furthermore, through the introduction of a competitive guest molecule to disassemble the assembled structure, we demonstrated that the interaction between the fibers and the substrate was supramolecular rather than nonselective stickiness. Multivalent theory was used to interpret the mechanism for the interaction process.

Precise Macroscopic Supramolecular Assembly by Combining Spontaneous Locomotion Driven by the Marangoni Effect and Molecular Recognition

“…[3,4] Afterwards,m any groups demonstrated macroscopic assembly of hydrogel building blocks through supramolecular interactions. [5][6][7][8][9][10][11][12][13][14][15][16][17][18] To promote research on macroscopic supramolecular assemblies from the hydrogel systems to rigid building blocks,w eh ave proposed ageneral principle of aflexible spacing coating to realize selfassembly of macroscopic polydimethylsiloxane (PDMS) or polymethyl methacrylate building blocks. [19] However,a ll of the aforementioned work involved an external energy source such as shaking or rotating to drive the building blocks larger than 10 mmthat could hardly diffuse or collide with each other by molecular thermal motion.…”

Supramolecular Polymeric Materials Containing Cyclodextrins

“…Potential Applications The process of macroscopic self-assembly and adhesion through CD-guest interaction can be used for various applications ranging from adhesion between dissimilar materials 32) and semi-dry materials, 33) programmable self-assembly toward two dimensional (2D) and 3D scaffolds. [34][35][36] …”

Self-propelling mini-motor and its applications in supramolecular self-assembly and energy conversion

“…同样, 当玻璃纤维表 面修饰有 Fe 3 O 4 纳米粒子与偶氮苯官能团时, 在外界 磁场的诱导下, 玻璃纤维可以在玻璃基底上定向运 动; 进而, 利用修饰在玻璃基底上的 β-环糊精与玻璃 纤维表面偶氮苯官能团之间的分子识别作用, 可以 实现玻璃纤维在玻璃基底上的图案化("BUCT")及其 稳定化. 利用分子识别作用的动态、可逆的特征, 向 体系中引入与 β-环糊精有更强结合能力的金刚烷分 子, 可实现组装体的解组装过程(图 18(b)) [87] .…”

“…图 18 运动在微米级超分子组装中的应用. (a) 基于金属-有机物配位作用的超分子组装[86] ; (b) 基于环糊精-偶氮苯分子识别 作用的超分子组装[87] ; (c) 三维有序支架的构筑及在生物组织工程支架中的应用[88] (网络版彩图) http://engine.scichina.com/doi/10.1360/N032016-00161 中国科学: 化学 2017 年 第 47 卷 第 1 期…”