通过将可逆加成-断裂转移(RAFT)聚合与铜催化的叠氮化物-炔烃环加成(CuAAC)的点击化学相结合,合成了具有高度接枝的聚合物壳的热稳定核-壳金纳米颗粒(Au NPs)。首先,炔封端的聚(4- benzylchloride- b -苯乙烯)(炔PSCl- b -PS)从炔封端的RAFT剂制备。然后,通过CuAAC反应将炔烃-PSCl- b -PS链与叠氮化物官能化的金纳米颗粒偶联。使用FT-IR,UV-Vis和TGA进行仔细的表征表明,PSCl- b -PS链已成功以高接枝密度接枝到Au NP表面。最后,叠氮基团引入到PSCl- b‐PS链在Au NP表面上产生具有可交联聚合物壳(Au‐PSN 3 ‐ b ‐PS 1)的热稳定Au NP 。作为对照样品,PS- b -PSN 3涂覆的金纳米粒子(Au的PSN 3 - b -PS 2)由传统的“接枝到”方法作了。上的聚合物链的接枝密度的Au-PSN
Study of (Cyclic Peptide)-Polymer Conjugate Assemblies by Small-Angle Neutron Scattering
作者:Ming Liang Koh、Paul A. FitzGerald、Gregory G. Warr、Katrina A. Jolliffe、Sébastien Perrier
DOI:10.1002/chem.201603091
日期:2016.12.19
ideal case permitted a further study into the growth mechanism of self‐assembling cyclic peptides, allowing an estimation of the cooperativity. Furthermore, we show the dependency of the nanostructure on the polymer and peptide chemical functionality in solvent mixtures that vary in the ability to compete with the intermolecular associations between cyclic peptides and ability to solvate the polymer shell
Altering Peptide Fibrillization by Polymer Conjugation
作者:Sabrina Dehn、Valeria Castelletto、Ian W. Hamley、Sébastien Perrier
DOI:10.1021/bm3007117
日期:2012.9.10
cycloaddition (CuAAC) to generate the desired peptide–polymer conjugates. This study focuses on a modified version of the core sequence of the β-amyloid peptide (Aβ), Aβ(16–20) (KLVFF). The influence of attaching short poly(N-isopropylacrylamide) and poly(hydroxyethylacrylate) to the peptide sequences on the self-assembly properties of the hybrid materials were studied via infrared spectroscopy, TEM
Drug Conjugation to Cyclic Peptide-Polymer Self-Assembling Nanotubes
作者:Bianca M. Blunden、Robert Chapman、Maarten Danial、Hongxu Lu、Katrina A. Jolliffe、Sébastien Perrier、Martina H. Stenzel
DOI:10.1002/chem.201403130
日期:2014.9.26
self‐assembled conjugates of polymers and cyclic peptides can be used as an efficient drug carrier. RAPTA‐C, a ruthenium‐based anticancer drug, was conjugated to a statistical co‐polymer based on poly(2‐hydroxyethyl acrylate) (pHEA) and poly(2‐chloroethyl methacrylate) (pCEMA), which formed the shell of the NTs. Self‐assembly into nanotubes (length 200–500 nm) led to structures exhibiting high activity against
Effects of graft length and density of well-defined graft polymers on the thermoresponsive behavior and self-assembly morphology
作者:Bingyan Jiang、Lei Zhang、Jie Yan、Qingquan Huang、Bing Liao、Hao Pang
DOI:10.1002/pola.27256
日期:2014.9.1
series of well‐defined thermoresponsive graftpolymers with different lengths and graftdensities, poly(glycidyl methacrylate)‐graft‐poly(N‐isopropylacrylate) (PGMA‐g‐PNIPAM), were successfully prepared by combination of controlled/living free radical polymerization and click chemistry. Effects of grafting length and density on the thermoresponsive behavior, aggregating mean diameter, and self‐assembly
Hyperbranched alternating block copolymers using thiol–yne chemistry: materials with tuneable properties
作者:Dominik Konkolewicz、Cheuk Ka Poon、Angus Gray-Weale、Sébastien Perrier
DOI:10.1039/c0cc02429e
日期:——
Alternating-block hyperbranched polymers were synthesized using the highly versatile thiolâyne reaction. Dimethyl acrylamideâstyrene and tert-butyl acrylateâstyrene polymers were prepared, with subsequent hydrolysis of the tert-butyl ester to acrylic acid. The dimethyl acrylamideâstyrene hyperbranched polymers self-assembled into large aggregates, as did the acrylic acidâstyrene system at low pH. However, high pH triggers the formation of very well defined small particles in the latter system.