Preparation of New Triplet Photosensitizers and Study of the Photophysics with Transient Optical/Magnetic Resonance Spectroscopic Methods

 

Preparation of New Triplet Photosensitizers and Study of the Photophysics with Transient Optical/Magnetic Resonance Spectroscopic Methods

Date: 20^th December, 2024 (Friday)

Time: 5 - 6 pm (HKT)

Venue: Lecture Theatre P1, Chong Yuet Ming Chemistry Building

Prof. Jianzhang ZHAO

 

School of Chemical Engineering

Dalian University of Technology

 

Prof. Jianzhang Zhao received his PhD degree (organic chemistry) at Jilin University in 2000. After postdoctoral research at Pohang University of Science and Technology (POSTECH, South Korea), Max Planck Research Unit of Enzymology of Protein Folding (Germany) and University of Bath (U.K.), he took up the current position at Dalian University of Technology in 2005. His research interests are studying charge, energy, spin transfer in organic molecules by transient absorption spectra and pulsed laser excited time-resolved electron paramagnetic resonance spectroscopy. He is also interested in application of photochemistry in industry.

 

The preparation of a few series of triplet photosensitizers with molecular structures based on transition metal complexes, or organic chromophores containing halogen atoms, or those containing radical units, and those having twisted molecular structures will be discussed. The study of the intersystem crossing (ISC) and charge separation (CS) in these small molecule organic compounds with nanosecond/femtosecond transient absorption spectroscopy, as well as the time-resolved electron paramagnetic resonance (TREPR) spectroscopy will be introduced. The application of the related compounds in oxygen sensing and triplet-triplet-annihilation upconversion will be briefly summarized.