Open seminar

Seminar & Events Detail

Lecture Title	"An Adventure in Luminescent Dyes: Preparation and Application in Light Emitting Devices"
Date	Friday 6 November 2009 16:00
Lecturer	Prof. Raymond Ziessel (University of Strasbourg, CNRS)
Place	Yamate No.3 Bldg. Seminar room
Summary	Open seminar by Prof. Raymond Ziessel (University of Strasbourg, CNRS) will be held at 16:00 on Nov 6 (Fri). Prof. Raymond Zieesel prepared several sets of borondipyrromethene (BODIPY) dyes appended aromatic polycycles. 　　The latter units function as ancillary light-harvesters and channel incident photons to the BODIPY emitter. The detailed mechanisms of intramolecular energy transfer are elucidated on the basis of steady-state and time-resolved spectroscopic measurements and related to the geometry of the assembly. The attached polycycle also serves to intercalate polynucleotides. In certain cases, it can lead to self-association into organised structures that absorb and emit at long wavelength. Two processes light harvesting and charge transfer can be accommodated in the same structure by suitable synthetic strategies. Rapid energy transfer occurs from the appended aromatic polycycle to the BODIPY unit and is followed by fast charge transfer to the redox-active component. Highly versatile arrays operates as artificial photosynthetic and light emitting devices. Applications in dye sensitized bulk heterojunction solar cells and OLEDs will also be scrutinized.
Contact	Koji Tanaka (IMS)

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