Modulating Photophysical Properties in a Flexible Porous Host by Regulating Guest-Assisted Charge Transfer Interactions

Abstract

1D array of electron donor-acceptor chromophoric organic molecules is of paramount importance for photovoltaic, catalysis and optoelectronic applications. Here in, we report coordination driven 1D array of electron donor guest (fluorene, carbazole, dibenzofuran, dibenzothiophene) and o-phen chelator as an acceptor in a Zn-based porous coordination polymer, {[Zn(o-phen)(ndc)]·DMF} (PCP-1). All the guest encapsulated PCPs were characterized by single crystal structure determination and showed charge transfer driven emission properties. Exciton binding energies were calculated and correlated with electron donating capabiliities of the guest molecules.