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Competitive Physisorption Among Alkyl‐Substituted π ‐Conjugated Oligomers at the Solid–Liquid Interface: Towards Prediction of Self‐Assembly at Surfaces from a Multicomponent Solution
Author(s) -
Bonini Massimo,
Zalewski Leszek,
Breiner Thomas,
Dötz Florian,
Kastler Marcel,
Schädler Volker,
Surin Mathieu,
Lazzaroni Roberto,
Samorì Paolo
Publication year - 2009
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200801901
Subject(s) - physisorption , alkyl , monolayer , scanning tunneling microscope , materials science , intermolecular force , self assembly , conjugated system , desorption , molecule , graphite , chemical engineering , interface (matter) , self assembled monolayer , derivative (finance) , chemical physics , crystallography , nanotechnology , organic chemistry , chemistry , adsorption , polymer , composite material , gibbs isotherm , financial economics , engineering , economics
Molecules play musical chairs too! Scanning tunneling microscopy reveals how subtle changes in molecular structure can dramatically affect the intermolecular and interfacial forces governing the self‐assembly of [5,5′]‐bisphenyl‐[2,2′]‐bithiophene alkyl derivatives at the graphite–solution interface. Experiments performed in a competitive scenario (see image) show that one derivative can be preferentially physisorbed or even cause the desorption of an already existing monolayer.