学术动态

学术报告: Recent Progress of Magnetic Surfactants: Self-Assembly, Properties and Functions

发布者:科研办发布时间:2017-05-23浏览次数:342作者:


题  目:Recent Progress of Magnetic Surfactants: Self-Assembly, Properties and Functions

报告人:郝京诚 (山东大学化学与化工学院院长、家杰出青年基金获得者、长江学者特聘教授、山东大学胶体与界面化学教育部重点实验室主任和山东大学物理化学国家重点学科学术带头人)

地  点:南湖校区化工学院一楼报告厅

时  间:2017525日下午二点半


AbstractSurfactants with magnetic properties (MagSurfs) have stimulated much interest in recent years due to their unique properties,1,2 which can be regulated non-invasively and reversibly by switching on and off an applied magnetic field. MagSurfs are unique and interesting soft magnetic materials with amphiphilic characteristics, which are complemented by complex metal-halide anions such as [FeCl4]−, [CoCl4]2−, [MnCl4]2−, [GdCl6]3−, etc.

In recent years, new types of MagSurfs containing monocationic, dicationic, or Gd3+ and Dy3+ counterions, and anionic MagSurfs with Fe3+, have been investigated in a variety of colloidal systems including micelles, vesicles, emulsions, or to form magnetized DNA. Ignoring their magnetic properties, some MagSurfs with specific metal counterions exhibit unique transitions in phase behavior, surface tensiometry, and three-dimensional magnetic ordering when compared with their parent surfactants. Except for the formation of aggregates, MagSurfs can be applied to separations of protein, forming magnetized DNA or proteins, preparing magnetic mesoporous silica or electrophoretic silica organosols, and as catalysts for methylene blue degradation. For example, the double-tailed MagSurf, (C16H33)2(CH3)2N+ [FeCl3Br]-, assembles to form well-defined aggregates with positive polyoxometalates (POMs) having specific morphology and desirable properties arising from a simple, noncovalent synthetic strategy. Here, both the MagSurfs and POMs are used for the design of magnetic assemblies that are strengthened by the components’ mutual combination. These hybrid “mag-aggregates” are easily introduced into biological systems and successfully served as magnetic transport vehicles to anchor and deliver protein molecules (Figure 1).

References

(1) (a) J. Eastoe,* et al. Angew. Chem. Int. Ed. 2012, 51, 2414. (b) J. Eastoe, et al. Langmuir 2013, 29, 3246. (c) J. Eastoe, et al. Adv. Mater. 2012, 24, 6244.

(2) (a) J. Hao,* et al. Langmuir 2015, 31, 11243. (b) J. Hao,* et al. J. Phys. Chem. B 2017, 121, 420. (c) J. Hao,* et al. Biomacromolecules 2015, 16, 4004. (d) J. Hao,* et al. Nature Commun. under review.



郝京诚男,196411月生。山东大学教授、博士生导师。

国家杰出青年基金获得者、长江学者特聘教授、山东

省泰山学者攀登计划专家、山东省智库高端人才社

会建设领域首席专家。





工作经历

2003.05-         山东大学胶体与界面化学教育部重点实验室主任、院长

2000.01-2003.04   美国纽约州立大学石溪分校,博士后

1998.10-2000.12   德国Bayreuth University,洪堡学者

1997.11-1998.10   日本Nagoya UniversitySTA学者

1995.12-1997.11   中科院兰州化物所,博士后

工作背景

长期从事物理化学教学和胶体与界面化学应用基础研究,在表面活性剂物理化学与性能领域有较高的国际影响,在提高石油采收率和凝胶技术污水重金属离子吸附净化,以及国家基础材料技术的提升和产业化等方面做出贡献。

曾任第21 届国际表面活性剂溶液科学大会主席、亚洲胶体与界面科学联合会主席,现任亚洲胶体与界面科学联合会委员、中国化学会理事。担任Adv. Colloid Interface Sci.LangmuirJ. Colloid Interface Sci.Colloids Surf. A物理化学学报化学进展编委。山东大学物理化学国家重点学科学术带头人。

已主持国家973重大研究计划,国家自然科学基金重点、重大国际合作和面上项目18项。在Chem. Rev.Acc. Chem. Res.Chem. Soc. Rev.Angew. Chem. Int. Ed.JACSLangmuir等期刊发表论文400余篇,撰英文专著2部,其中Langmuir论文超过100篇,论文他引8000余次。获邀各类国际会议Plenary LectureInvited Talk报告40余次。曾获中科院百人计划择优资助、国家杰出青年基金、长江学者特聘教授、日本材料技术研究会特别奖、亚洲胶体与界面科学联合会特别奖、CCS-BASF青年知识创新奖、教育部自然科学一等奖(排名1)、亚洲化学新星奖、CCS-AkzoNobel化学奖等。


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