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Speaker: Katherine Lloyd (Rutgers- Newark)

Date: 19 Nov 2020

Title: Helical peptides design for molecular dipoles functionalization of wide band gap oxides


In the renewable energy field for semiconductors, energy alignment between the frontier orbitals of an organic chromophore and the band edges of a wide band gap metal oxide substrate is a key factor influencing charge transfer efficiencies and device properties.    This presentation will describe  the synthesis and study of helical hexapeptides, synthesized from 2amino isobutyric acid (Aib) residues, protected at the N-terminus with a carboxybenzyl group (Z) and at the C-terminus with either a carboxylic acid or an isophthalic acid (Ipa) anchor group, designed to establish a surface dipole layer on a TiO2 substrate, with the goal of influencing the energy levels of a co-adsorbed porphyrin.  the peptides were bound on  TiO2 nanoparticle films and single crystal  TiO2(110)