eng URI http://hdl.handle.net/10795/1556 Χημεία The idea of attaching multiple porphyrins to graphene is explored. A charged porphyrin salt is stabilized onto exfoliated graphene by taking advantage of π-π* interactions and a second porphyrin light harvester is anchored through electrostatic interactions with the former. The interactions are capable of allowing electronic communication of the second, electrostatically attached, porphyrin with graphene, effectively quenching its emission. The graphene-porphyrin-porphyrin triad is examined through optical (UV-Vis, steady state and time resolved photoluminescence) techniques, while electrochemistry is employed to study the thermodynamically favored pathways through which the interaction occurs. The porphyrin that is electrostatically stabilized onto the graphene nanoensemble shows lifetimes one order of magnitude faster than its π-π* stacked analogue suggesting a more efficient pathway 26 pp. LOMv1.0 creator LOMv1.0 Project Final Beneficiary LOMv1.0 Project Executing Organisation 2015 Digital Library of the Operational Programme "Education and Lifelong Learning" abstract types Text Γραφένιο 550295 application/pdf http://repository.edulll.gr/edulll/bitstream/10795/1556/2/1556_JPhysChemC%282015%2c119%2c8046%29.pdf URI http://hdl.handle.net/10795/1556 LOMv1.0creator 2016-01-21T08:59:09Z LOMv1.0validator 2016-01-21T08:59:09Z LOMv1.0 gre no no Copyright EYD-EPEDBM (Operational Programme "Education and Lifelong Learning")