NEAR INFRA-RED DYES BASED ON p-EXTENDED BODIPYS

Abstract

BODIPY DERIVATIVES WITH GOOD NIR ABSORBING OR EMISSIVE FEATURES HAVE NOW ATTRACTED INCREASING ATTENTIONS IN BOTH MATERIALS SCIENCE AND FLUORESCENT BIO-TECHNOLOGY. THIS THESIS PRIMARILY FOCUSES ON DESIGN AND SYNTHESIS NOVEL P-EXTENDED BODIPY-BASED FAR-RED OR NIR INFRARED DYES THROUGH STRUCTURAL MODIFICATION OF THE INITIAL SKELETON. FUSION OF AROMATIC UNITS AT THE `ZIG-ZAG? EDGE OF BODIPY HAS BEEN PROVED AS AN EXTREMELY EFFICIENT APPROACH TO GENERATE NIR BODIPY DERIVATIVES WITH EXCELLENT PHOTO- AND THERMAL STABILITY, THE MECHANISM AND THE IMPACTS OF ELECTRONIC DONATING SUBSTITUENTS ON THIS FUSION MODE WERE INTENSIVELY INVESTIGATED IN CHAPTER 2. IN CHAPTER 3, BODIPY DYES WITH BENZO- UNITS FUSED AT DIFFERENT SITES WERE SYNTHESIZED THROUGH NOVEL APPROACHES, AND THE IMPACTS OF THE FUSION MODE ON THE ELECTRONIC STRUCTURES WERE STUDIED IN DEPTH; MOREOVER, ELECTRON-DONATING GROUPS WERE WIPED OUT TO GET RID OF INTRAMOLECULAR CHARGE TRANSFER INDUCED BY `D-A? MOTIF, AND ONE OF THE RESULTING FUSED-