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Towards Organization of Molecular Machines at Interfaces: Langmuir Films and Langmuir–Blodgett Multilayers of an Acid–Base Switchable Rotaxane
Author(s) -
ClementeLeón M.,
Credi A.,
MartínezDíaz M.V.,
Mingotaud C.,
Stoddart J. F.
Publication year - 2006
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200502265
Subject(s) - langmuir–blodgett film , rotaxane , dumbbell , materials science , amphiphile , langmuir , molecular machine , base (topology) , chemical engineering , polymer , polymer chemistry , molecule , supramolecular chemistry , adsorption , nanotechnology , organic chemistry , monolayer , chemistry , composite material , copolymer , medicine , mathematical analysis , physical therapy , mathematics , engineering
Langmuir films of a tricationic rotaxane and its dumbbell‐shaped component are formed by cospreading with the amphiphilic anion dihexadecylphosphate at an air/water interface (see figure). The rotaxane behaves as an acid–base‐controllable molecular shuttle in solution. Langmuir–Blodgett multilayers of either the rotaxane or the dumbbell form thin films that exhibit reversible switching behavior upon exposure to acids and bases.