Exclusive occurrence of photoinduced energy transfer and switching of its direction by rectangular π-extension of nanographenes.

ABSTRACT: As structure defined cutouts of the graphene lattice, nanographene molecules have gained plenty of attention because of their high potential for versatile applications in organic electronics and energy conversion devices and as ideal model systems for the better understanding of intrinsic structure-property correlations of graphenes. In this study, well-defined nanographenes with sp² carbon networks of different sizes, hexa-peri-hexabenzocoronene (HBC) and its rectangularly π-extended version, a short graphene nanoribbon (GNR), have been covalently functionalized with photoactive porphyrin molecules. On the basis of their spectroscopic studies, the photodynamics of the porphyrin-linked nanographenes was found to be influenced substantially by the size of the nanographenes

SUBMITTER: Umeyama T 

PROVIDER: S-EPMC6624990 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature