备注 | BRIEF CV Prof. Pi-Tai Chou earned his Ph.D. in Chemistry and Biochemistry from The Florida State University, postdoctoral fellow in University of California at Berkeley, and is currently a chair professor of chemistry department and director of center for emerging material and advanced devices in National Taiwan University. Prof. Chou has received a number of prestigious prizes, including TaiwanOutstanding Research Awards, Academic Achievement Award, National Chair Award, International Asian and Oceanian Photochemistry Association (APA) Award (Japan) and TWAS (The World Academy Sciences) Chemistry Prize. He is a Fellow of the Royal Society of Chemistry (FRSC). He has published more than 515 SCI papers, 15 review articles, 6 book chapters and is named in 18 patents or disclosures.His Web of Science total citations are > 22,000 with an h-index of 77 (Google Scholar 85). He served as editorial the advisory board member of ACS Applied Materials and Interfaces (2011-2014), Journal of Physical Chemistry A, B C and Letters (2014-2017) and the associate editor of Material Express (2012-2014). He is currently serving as an associate editor of ACS Applied Materials and Interfaces (2014-).
ABSTRACT In this talk I will focus on the panchromatic light and near-IR generation via control of intermolecular interaction and excited-state reaction dynamics/thermodynamics. I will present several conceptual designs, including fluorescence/phosphorescence-based emission, excimer-based white-light OLEDs, skeletal motion induced multiple emissions and the excited-state intramolecular proton transfer (ESIPT) reaction. Among these, the case in point may be ascribed to ESIPT, for which the reaction dynamics and thermodynamics can be fine-tuned via the hydrogen bonding strength, including acid/base property, bonding angle and distance. The reversibility of ESIPT can thus be harnessed to fine-tune reactant and product ratiometric emissions. On the other hand, through the rational design and packing to decouple the exciton and ligand vibration, the energy gap law can be broken down. In this case, highly intensive near-IR emission can be attained with unprecedented quantum efficiency. I also would like to talk about the instrumentation for step-scan FTIR and UV-Vis transient absorption, such that the structure of transient species during the reaction can be monitored. The combination of molecular design and spectroscopic methodologies leads us to gain new insight into the photophysical and the excited-state reaction properties.
Recent Publication:[1]Nature Commun. 2018, 9, 3111. [2] Nature Review Chemistry, 2018, 2, 131–143. accepted. [3] Angew. Chem. Int. Ed. 2018, 57 (31), 9880–9884 [4]Angew. Chem. In. Ed. 2018, 57, 5020 –5024, [5]Adv. Mater., 2018, 1706592,[6]Chem. Rev.2017, 117, 13353−13381, [7]NaturePhotonics. 2017, 11, 63–68, [8]J. Am. Chem. Soc.2017, 139, 1636–1644. [9]J. Am. Chem. Soc., 2017, 139, 6396-6402 |