Synthesis and Photophysics of Zinc Porphyrin Based Dual Absorber-Upconverters

Abstract

Several zinc porphyrin small molecules and pendant polymers were synthesized in order to assess their ability to act as dual absorber-upconverters in both solution and solid-state triplet-triplet annihilation mediated non-coherent photon upconversion (NCPU-TTA) systems. Control over the proximity, relative orientation and degree of orbital overlap between zinc porphyrin chromophores was exercised through covalent structural design in each set of studied zinc porphyrin derivatives. Structure-property relationships were determined through photophysical analyses of the zinc porphyrin compounds. Photophysical analyses were able to provide the basis for mechanistic models that detailed excitonic ..