Nitrogen-Doped Carbonized Polymer Dots (CPDs) and their Optical and Antibacterial Characteristics: A Short Review
Biya Elsa Saji, Midhun Saji, Neethu Joseph, Manoj Balachandran, C Wang, L Li, Y Wu, J Gu, C Ma, C Zhu, H Gao, Y Zhang, Y Shang, Z Yang, G Chen, J Liu, S Lu, Q Tang, K Zhang, W Yu, H Sun, B Yang, J Liu, D Li, K Zhang, M Yang, H Sun, B Yang, X Zhang, M Jiang, N Niu, Z Chen, S Li, S Liu, J Li, P Roy, P Chen, A Periasamy, Y Chen, H Chang, C Xia, S Zhu, T Feng, M Yang, B Yang, C Xia, S Tao, S Zhu, Y Song, T Feng, Q Zeng, J Liu, B Yang, Y Song, S Zhu, J Shao, B Yang, Y Song, S Zhu, S Zhang, Y Fu, L Wang, X Zhao, B Yang, S Tao, S Lu, Y Geng, S Zhu, S Redfern, Y Song, T Feng, W Xu, B Yang, X Miao, D Qu, D Yang, B Nie, Y Zhao, H Fan, Z Sun, K Zheng, X Li, M Chen, Y Gong, A Tang, Z Wang, Z Wei, L Guan, F Teng, S Tao, Y Song, S Zhu, J Shao, B Yang, S Tao, Y Song, S Zhu, J Shao, B Yang, S Tao
Abstract
Substantial advancements in the field of Carbon Dots (CDs) and their derivatives in recent years can be accredited to their tunable properties. Recently Carbonized Polymer Dots (CPDs) are the emerging form in the CDs family, which possesses a typical polymer/Carbon hybrid structure and properties due to its incomplete carbonization. Alteration of various parameters during the synthesis process suggested that the properties of CPDs depend on temperature and pH. It was found that doping of CPDs using nitrogen enhanced its optical properties, thereby being used as biomarkers. CPDs generally hold a strong green and blue emission, while intense red luminescence was observed doping with nitrogen. Photoluminescence Quantum Yield (PLQY) was also found to increase with the increase in doping and temperature. Doped CPDs find several applications, including bio-imaging, LEDs, etc. In this review, we focus on analyzing the increase in efficiency of CPDs with the process of doping considering optical and antibacterial applications.