At 14:00 on September 13, 2023, Professor Yang Bai from Jilin University, at the invitation of Professor Huang Hui, came to the University of Chinese Academy of Sciences to give a lecture on the theme of "Carbonized polymer points and Optical functional Materials". The lecture was held in Room 106 on the second floor of the classroom.

Professor Yang Bai first introduced the development history of nano-hybrid and high-performance optical materials, and then led to high-performance carbonized polymer point optical functional materials. Carbonized polymer points are a new type of carbon points with polymer characteristics and core-shell structure, which have the advantages of low toxicity and easy preparation as nanoelements. Carbonized polymer dots were prepared by physical methods in the early stage and developed to chemical methods in the later stage. The fluorescence quantum yield of carbonized polymer dots prepared by chemical methods in 2013 by Professor Yang Bai's research group reached 80%. Then Professor Yang Bai introduced the synthesis method of carbonized polymer points in detail, proposed the cross-linking enhanced emission effect and its universality, and proposed the core-shell structure and naming of carbonized polymer points. Then Professor Yang introduced the application of carbonized polymer dots in fluorescence, phosphorescence, tumor treatment, antibacterial and other aspects. At last, Professor Yang Bai exchanged and discussed with the on-site teachers and students, and got a warm response from the on-site teachers and students.

Yang Bai, graduated from the Department of Chemistry of Jilin University in 1984, got his Ph. D. degree in 1991, has been teaching at Jilin University since 1987, and has been a professor since 1994. In 1999, he was appointed as a Changjiang Scholar by the National Outstanding Young People Fund, and in 2009, he was supported by the National Innovative Research Group Fund. He served as the dean of the School of Chemistry and the director of the State Key Laboratory of Supramolecular Structure and Materials. His research interests include polymer nanohybrids, carbon point design and synthesis, and optical functional materials. He has published more than 700 SCI papers, which have been cited more than 49,000 times (H-104), and a single paper has been cited more than 3200 times. Since 2014, he has been selected as a highly cited Scholar of Elsevier China continuously. Since 2018, he has been selected as a global highly cited scholar in the cross field of Clarivate. As the first complete student, he won the first prize of Provincial Teaching Achievement of higher Education of Jilin Province in 2009, the first prize of Science and Technology Progress of Jilin Province twice in 2007 and 2021, and the second prize of National Natural Science Award in 2010. He is currently the chairman of the Carbon Point Functional Materials Branch of China Materials Research Society.