Molecular Interface Formation in Titanyl Phthalocyanine–C60 Monolayer Films

Autor: Janice Reutt-Robey, Yinying Wei
Rok vydání: 2012
Předmět:
Zdroj: The Journal of Physical Chemistry C. 116:23773-23778
ISSN: 1932-7455
1932-7447
DOI: 10.1021/jp308205b
Popis: Molecular interfaces have been prepared in titanyl phthalocyanine (TiOPc)–C60 monolayer films on Ag(111) and characterized with ultra high vacuum–scanning tunneling microscopy. Two distinct TiOPc monolayer phases, namely, a hexagonal phase and a honeycomb phase, were first generated as molecular-film substrates for C60 growth. Both TiOPc monolayer structures rearrange upon C60 adsorption, yielding films with nanophase-separated TiOPc and C60 domains and a new cocrystalline TiOPc2(C60)1 honeycomb network. Kinetic access to the cocrystalline network is most facile from the hexagonal TiOPc monolayer, producing extended domains. Detailed models for emergent structural phases and molecular interfaces are presented. Mechanisms for C60-induced rearrangements are developed from coverage-dependent measurements.
Databáze: OpenAIRE