Improving Intramolecular Hopping Charge Transport via Periodical Segmentation of π-Conjugation in a Molecule
Yutaka Ie, Yuji Okamoto, Takuya Inoue, Takuji Seo, Tatsuhiko Ohto, Ryo Yamada, Hirokazu Tada, Yoshio Aso
Abstract
The development of several-nanometer-scale π-conjugated systems for efficient intramolecular hopping charge transport remains a significant challenge. To construct localized electronic structures at the same energy in a molecule, a series of oligothiophenes, with lengths up to 10 nm and periodically twisted structures, was synthesized. Single-molecule conductance measurements of the twisted molecules revealed resistances lower than those of planar oligothiophenes. This study provides a rational molecular design to improve the intramolecular hopping charge transport in materials.
Topics & Concepts
Intramolecular forceChemistryMoleculeConductanceCharge (physics)Chemical physicsPlanarConjugated systemMolecular wireMolecular electronicsSmall moleculeNanotechnologyComputational chemistryCrystallographyStereochemistryPolymerCondensed matter physicsOrganic chemistryMaterials sciencePhysicsComputer graphics (images)Computer scienceBiochemistryQuantum mechanicsMolecular Junctions and NanostructuresOrganic Electronics and PhotovoltaicsConducting polymers and applications