Unconventional Kondo effect in redox active single organic macrocyclic transistors.
Cyclo[6]- and cyclo[8]pyrrole, two aromatic expanded porphyrins, were studied in a single-molecule transistor (SMT) setup. The analyses of these compounds allowed us to observe an uncommon absence of an even-odd effect in the Kondo resonance in discrete, metal-free organic macrocyclic compounds. The findings from the SMT measurements of these cyclopyrroles were in accord with those from cyclic voltammetry (CV) studies and theoretical analyses. These findings provide support for the notion that SMT measurements could be useful as a tool for the characterization of similar types of aromatic macrocyclic compounds.
Department of Chemistry and Institute for Applied Chemistry, Hallym University, Chuncheon, Gangwon-do 200-702, Korea.
Jeong Tae
JT
Lee
Dong-Hun
DH
Chae
Zhongping
Z
Ou
Karl M
KM
Kadish
Zhen
Z
Yao
Jonathan L
JL
Sessler
D004553:Electric Conductivity; D047028:Macrocyclic Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction; D011166:Porphyrins / Q000737:chemistry*; D011758:Pyrroles / Q000737:chemistry*; D014173:Transistors, Electronic
D047028:Macrocyclic Compounds; D011166:Porphyrins; D011758:Pyrroles