The Development of New Reagents and Reactions for Synthetic Organofluorine Chemistry by Understanding the Unique Fluorine Effects / Perfluoroalkylation Using Perfluorocarboxylic Acids and Anhydrides / Chemistry of OCF3, SCF3, and SeCF3 Functional Groups / Introduction of Trifluoromethylthio Group into Organic Molecules / Bifunctionalization-Based Catalytic Fluorination and Trifluoromethylation / Fluorination, Trifluoromethylation, and Trifluoromethylthiolation of Alkenes, Cyclopropanes, and Diazo Compounds / Photoredox Catalysis in Fluorination and Trifluoromethylation Reactions / Asymmetric Fluorination Reactions / The Self-Disproportionation of Enantiomers (SDE): Fluorine as an SDE-Phoric Substituent / DFT Modeling of Catalytic Fluorination Reactions: Mechanisms, Reactivities, and Selectivities / Current Trends in the Design of Fluorine-Containing Agrochemicals / Precision Radiochemistry for Fluorine-18 Labeling of PET Tracers