学术通知
报告主题:Polymerisation-Induced Self-Assembly in Aqueous Media
报告人:Steven Armes 教授(University of Sheffield)
报告时间及地点:2026年8月27日(星期四)上午10:00,华南理工大学广州国际校区C3-c204
研讨时间及地点:2026年8月27日(星期四)下午14:30、8月28日(星期五)下午14:30;华南理工大学广州国际校区C3-a301
邀请人:王林格 教授
主办单位:前沿软物质学院
华南软物质科学与技术高等研究院
广东省功能与智能杂化材料与器件重点实验室
软物质功能与智能杂化材料国际联合研究中心
报告摘要:
Polymerisation-induced self-assembly (PISA) is a powerful and versatile technique for the rational synthesis of concentrated dispersions of block copolymer nano-objects of controllable size, shape and surface chemistry. In essence, an insoluble block is grown from one end of a soluble block in a suitable solvent. Once the growing block reaches a certain critical degree of polymerisation, micellar nucleation occurs and the soluble block then acts as a steric stabiliser. Unreacted monomer diffuses into the copolymer cores, which leads to a relatively high local concentration and hence a significant rate acceleration. Depending on the target diblock copolymer composition, the final copolymer morphology can be spheres, worms or vesicles. The design rules for PISA are generic: such syntheses may be conducted in water, polar solvents or non-polar solvents using reversible addition-fragmentation chain transfer (RAFT) polymerisation. In this lecture, I will focus on PISA syntheses conducted in aqueous media. In early work, we reported the synthesis of thermoresponsive worm gels, which have potential biomedical applications. More recently, we have developed a new reverse sequence PISA formulation that enables the efficient synthesis of hydrolytically degradable diblock copolymer nanoparticles directly in concentrated aqueous media. Typically, spherical nanoparticles are obtained but if this approach is combined with crystallisation-driven self-assembly (CDSA) under appropriate conditions then highly anisotropic nanoparticles such as rods or diamond platelets can also be obtained.
报告人简介:
Steven Armes教授毕业于布里斯托大学(1983年获学士学位,1987年获博士学位);他在洛斯阿拉莫斯国家实验室从事两年博士后研究,并在苏塞克斯大学工作15年后,他于2004年入职谢菲尔德大学,现任该校Firth化学教授。Armes教授是高分子化学与合成领域的著名学者,并入选英国皇家学会院士(Fellow of the Royal Society,FRS)。他长期从事高分子材料的精准合成、界面材料开发和生物应用研究,在活性自由基聚合和异相聚合等合成方法、以聚合诱导的自组装(PISA)方法制备胶束与囊泡或凝胶和研发聚合物基“Pickering”乳化剂等高分子化学与胶体化学领域上尤为专长,从而发展出各种兼具生物相容性与刺激响应性的聚合物。其相关研究工作已在材料和高分子领域知名期刊上发表了765篇SCI论文(引用超过56,000次,H指数为135)。Armes教授获多项国际学术奖项,包括2016年DSM材料科学奖(英国唯一荣获此奖的学者);2017年“ECIS-Solvay”奖;2018年英国皇家学会“Macro Group”杰出成就奖,同年获得英国皇家学会“Armourers and Brasiers”奖;2020年英国皇家学会软物质与生物物理化学奖,同年获化学工业协会“创新配方奖”;2021年“Sir Eric Rideal”讲座奖(终身成就奖)。
