德国马普胶体与界面研究所Prof. Helmuth M?hwald 10月31日上午学术报告

发布时间:2016-10-14访问量:672设置

Presenter:Prof. Helmuth M?hwald 

Max-Planck-Institute of Colloids and Interfaces,  Germany

 

Topic: Light stimulated interactions in organic/inorganic nanocomposites

Time: 10:00 AM, Oct. 31st (Monday)

Location: Conference Room B, BLDG 909-1F

 

Abstract

There have been many developments to fabricate ultrathin polymeric films, but less is known about the interaction of these films with an inorganic support. I will discuss 3 different systems, where the interaction is most important for the function of the film in response to processes on the support.

1. In cooperation with G. Zhang, Jilin University, a nanoplasmonic surface with a Ag film deposited is designed that is optically transparent and that can be excited by visible light. Field enhancement can lead to enhanced optical or Raman spectroscopic sensing, it can also be used to heat a thermoresponsive polymer film, that then changes wetting behavior. Many different geometries like frustrums, nanobeakers,asymmetric volcanoes are realized and  optimized for maximum sensitivity of detection, and results of simulations and experiments are in good agreement.In special the coupling of different plasmons is most promising, leading to different environmental sensitivity.

2. A TiO2 support excited by UV light, sonochemically treated also by visible light, ejects charge carriers, that can be converted into protons in an aqueous or polyelectrolyte environment. The resulting pH change can lead to a change in thickness and elasticity of the polymeric film. This can lead to changes in cell growth and via light this can be guided on a surface. Estimates of required sensitivities show, that this light/pH conversion can be achieved with many different solids and should also much depend on the type of polymer, that could serve as pH buffer.(E.V.Skorb, D.V.Andreeva, H.M. et al. Angew.Chemie, Biomacromol., in press.)

 

Biography

Positions

 

1974-1975

Postdoc,   (IBM San Jose)

1978

Habilitation in Physics (University   of Ulm)

1978-1981

Scientific   Co-Worker (Dornier-System, Friedrichshafen)

1981-1987

Associate Professor (C3) in   Experimental Physics, Biophysics. (TU München)

1987-1993

Chair   (C4) in Physical Chemistry (University of Mainz)

1993-2014

Director and   Scientific Member, (MPI of Colloids and Interfaces, Golm/ Potsdam)

since 1995

Honorary   Professor, (University of Potsdam)

since 2014

Emeritus director and consultant at   the MPI of Colloids and Interfaces

since 2014

Consultant   with the CEA at ICSM Marcoule, France

Awards and Scholarships

1979

Physics   Award of the German Physical Society

1998

Raphael-Eduard-Liesegang   Award of the German Colloid Society

2000

Vannegard Lecture, Gothenburg

2002

Lectureship   Award of the Japanese Colloid Society

2002

Founder’s Lecture, London

2002

Eli   Burstein Lecture, Philadelphia

2004

Corresponding member of the Austrian   Academy of Sciences

2007

Gay-Lussac-Humboldt   Award, French Ministry of Sci. Technol.

2007

Highly cited chemist according to ISI

2007

Overbeek   Medal of the European Colloid and Interface Society

2008

Honorary Doctorate of the University   Montpellier, France

2009

Ostwald-Medal of the German   Kolloid-Gesellschaft

2010

BP   visiting lecturer, Univ. Cambridge

2012

Member of the Academy of Europe

2014

Langmuir   Lecturer (ACS)

2014

Elyuhar   - Goldschmidt award of the Royal Spanish Chemical Society

 

Publications

 

According to WoS (Core) (September 2016): >1000 publications, h=106, > 49.000 citations

 

Contact: Prof. Lifeng Chi

(责任编辑:张伶 邮箱:zhangling10@suda.edu.cn

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