1. Prof. Chin-Fa Lee, National Chung Hsing University, Taichung, Taiwan. 11/2020-06/2022; Topic: Sustainable methodologies for Organic Synthesis. 2. Prof. Shih-Ching Chuang, National Yang-Ming Chiao Tung University, Hsinchu, Taiwan; 03/2019-07/2020. Topic: Transition Metal Catalyzed C-H bond Functionalization’s and Organic Material Molecule Preparation (OPV application). 3. Dr. M. Anbukulandainathan, Principle Scientist (late); Central Electrochemical Research Institute (CSIR-CECRI) (Project Assistant–III); 02/2013-01/2014 Project title: Nanomaterials/Fluro silane polymers for functionalized fabrics