N-ANNULATED RYLENE BASED CHROMOPHORES AND THEIR APPLICATION

Abstract

Current developments in the field of functional materials have boosted interest in the development of next-generation dyes. Apart from many commercialized dyes (eg. cyanines, polyenes), polycyclic aromatics {eg. polycyclic aromatic hydrocarbons (PAHs), porphyrins, and 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY)} have drawn intensive interest in recently decades. Among them, rylenes have been extensively studied primarily due to their versatile optical and electrochemical properties, ease of functionalization and excellent chemical and thermal stabilities. These advantageous factors make them attractive materials in electronics, optoelectronics, and photonics. In this dissertation, rylenes have been utilized and three strategies (“push-pull”, core extension, quinoidization) have been adopted to synthesize functional π-extended molecules with varied physical and optical properties.