Dictating Nanoparticle Assembly via Systems-Level Control of Molecular Multivalency
作者:Peter J. Santos、Zhen Cao、Jianyuan Zhang、Alfredo Alexander-Katz、Robert J. Macfarlane
DOI:10.1021/jacs.9b04999
日期:2019.9.18
Nanoparticleassembly can be controlled by multivalent binding interactions between surface ligands, indicating that more precise control over these interactions is important to design complex nanoscale architectures. It has been well-established in natural materials that the arrangement of different molecular species in three dimensions can affect the ability of individual supramolecular units to
作者:Jianyuan Zhang、Peter J. Santos、Paul A. Gabrys、Sangho Lee、Caroline Liu、Robert J. Macfarlane
DOI:10.1021/jacs.6b11052
日期:2016.12.21
nanocomposite tectons (NCTs), which consist of inorganic nanoparticlesgrafted with a dense layer of polymer chains that terminate in molecular recognition units capable of programmed supramolecular bonding. By tuning various design factors, including the particle size and polymer length, we can use the supramolecular interactions between NCTs to controllably alter their assembly behavior, enabling the formation
Reinforcing Supramolecular Bonding with Magnetic Dipole Interactions to Assemble Dynamic Nanoparticle Superlattices
作者:Peter J. Santos、Robert J. Macfarlane
DOI:10.1021/jacs.9b11476
日期:2020.1.22
hydrogen bonding groups and the nanoparticles' surface. This results in modulation of the materials' blocking temperature, as well as the stabilization of a unique superlattice phase that only exists when magnetic coupling between particles is present. Using magnetic interactions to affect nanoparticle assembly in conjunction with ligand-mediated interparticle interactions expands the potential for synthesizing
Straightforward Preparation of Telechelic H-bonding Polymers From Difunctional Trithiocarbonates and Supramolecular Block Copolymers Thereof
作者:Arthur Bertrand、Senbin Chen、Grégoire Souharce、Catherine Ladavière、Etienne Fleury、Julien Bernard
DOI:10.1021/ma200540u
日期:2011.5.24
We report an original strategy toward the straightforward preparation of precisely defined telechelic H-bonding polymers and the generation of supramolecular block copolymers thereof. Making use of an α,ω-functionalized symmetrical trithiocarbonate bearing thymine groups at both chain ends, a series of heterocomplementary H-bonding polymers were effortlessly generated by RAFT polymerization in a one
我们报告了一种直接策略,用于直接制备精确定义的远螯H键键聚合物及其超分子嵌段共聚物的产生。利用在两个链端带有胸腺嘧啶基团的α,ω-官能化的对称三硫代碳酸酯对称结构,通过一步一步RAFT聚合轻松地生成了一系列杂合的氢键键合聚合物。所得的远螯大分子与杂互补α-DAP-官能化的链选择性地相互作用,以溶液和本体形式提供超分子嵌段共聚物。这些自组装由1证明1 H NMR和流变学测量。这些缔合的结果是,如通过AFM分析观察到的,非官能均聚物共混物倾向于微相分离,而H键均聚物共混物表现出均质的微观结构,与超分子嵌段共聚物的形成相一致,从而促进了聚合物之间界面的稳定。
Supramolecular semifluorinated dendrons glued by weak hydrogen-bonds
作者:Senbin Chen、Annette Meister、Wolfgang H. Binder
DOI:10.1039/c7cc04683a
日期:——
H-Bonded semifluorinated dendritic polymer networks are generated by association of macromolecules, driven by the weak diaminopyridine (DAP) and thymine (THY) couple. Solvent-dependent morphologies are observed: a continuous film structure when drop-cast from tetrahydrofuran (THF) solution or uniform nanoparticles with a diameter of ∼50 nm in toluene.