ESPCI web site
Monday, July 8, 2019
10:00 am
IPGG Amphitheatre, Institut Pierre-Gilles de Gennes,
6 rue Jean Calvin. 75005 Paris
Aggregation-Induced Emission (AIE) : A Wonderland Full of Exoticism and Excitement
Luminescent molecule based materials are important members of advanced materials, and have received considerable attention from both scientific and industrial communities. Traditional luminophores usually suffer from emission weakening or quenching in aggregated state and these phenomena which are notoriously known as aggregation-caused quenching (ACQ) largely limit the application scope of them. In 2001, we found that some propeller-like molecules showed luminescence behavior that was exactly opposite to the ACQ effect : the aggregate formation turned on their light emissions, changing them from weak fluorogens into strong emitters. We termed this novel phenomenon as aggregation-induced emission (AIE) and called these luminescent molecules as AIEgens. Through systematic study it has been rationalized that the restriction of intramolecular motions (RIM) is highly responsible for the AIE effect, and a great number of new AIEgens have been developed with emission colors covering the entire visible, extending into UV and near-infrared (NIR) spectral region under the guidance of RIM mechanism. Based on the tunable photophysical processes, AIEgens have been widely applied in many high-tech fields such as optoelectronics, chemosensing, bioimaging, etc, and have been formed a new family of advanced materials.
Invited by :
Min-Hui Li and Ilaria Ciofini, Chimie ParisTech
Biography of Ben Zhong TANG :
Center for Aggregation-Induced Emission,
State Key Laboratory of Luminescent Materials and Devices,
South China University of Technology, Guangzhou, China.
Hong Kong Branch of Chinese National Engineering Research Center for
Tissue Restoration and Reconstruction and Department of Chemistry,
The Hong Kong University of Science and Technology, Hong Kong, China.
Email : tangbenz@ust.hk
Ben Zhong Tang is Stephen K. C. Cheong Professor of Science, Chair Professor of Chemistry, and Chair Professor of Chemical and Biological Engineering at The Hong Kong University of Science and Technology (HKUST). His research interests include macromolecular chemistry, materials science and biomedical theranostics. Tang received B.S. and Ph.D. degrees from South China University of Technology and Kyoto University, respectively. He conducted postdoctoral research at University of Toronto. He joined HKUST as an assistant professor in 1994 and was promoted to chair professor in 2008. He was elected to the Chinese Academy of Sciences and the Royal Society of Chemistry (RSC) in 2009 and 2013, respectively. Tang has published >1,200 papers. His publications have been cited >67,000 times with an h-index of 129. He has been listed by Thomson Reuters as a Highly Cited Researcher in both areas of Chemistry and Materials Science. He received the State Natural Science Award (1st Class ; 2017) from Chinese Government, Scientific and Technological Progress Award from the Ho Leung Ho Lee Foundation (2017) and Senior Research Fellowship from the Croucher Foundation (2007). He is now serving as Editor-in-Chief of Materials Chemistry Frontiers (RSC & CCS).