Molecular Design of a Porphyrin Dimer with Features of P-Type and N-Type Heterojunctions by Chiral l-Glutamic Acid Induced Action

Abstract

The structural features of chiral porphyrin dimers (CPDs) were studied by using UV−vis, 1 H NMR, and XPS. These data illustrated that the intramolecular hydrogen bridge was formed, and the amidogen as the bridge of the intramolecular electron transfer promotes electron−hole separations in CPDs. The surface photovoltaic response of sandwich cells composed of CPDs was measured with the surface photovoltage spectrum (SPV) and electric-field-induced surface photovoltage spectroscopy (EFISPS). The surface photovoltaic signs show the CPD has features of not only the p-type but also n-type heterojunction.