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Updated: Jun 20, 2026
Layer-by-layer Synthesis and Transfer of Freestanding Conjugated Microporous Polymer Nanomembranes
Published on: December 15, 2015
Ni(II)- and vanadyloctaethylporphyrin self-assembled layers formed on bare and 5-(octadecyloxy)isophthalic acid
Nuri Oncel1, Steven L Bernasek
1Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA.
Abstract:
Self-assembled monolayers of nickel- and vanadyloctaethylporphyrin molecules (NiOEP and VO-OEP, respectively) formed on bare and on 5-(octadecyloxy)isophthalic acid (5-OIA) covered highly ordered pyrolytic graphite (HOPG) substrates were studied with scanning tunneling microscopy (STM) at the solid-liquid interface under ambient conditions. A detailed comparison of the monolayer structures and lattice parameters of Ni-OEP and VO-OEP overlayers, along with previous information about the structure of Pt-OEP monolayers, suggests that coupling between the central metal atom and the substrate strongly affect the observed structures. In addition, the concentration of the solution and the nature of the solvent also affect the structure of these thin porphyrin films. These conditions can be used to guide the nanoscaled structures that form.
