000212657 001__ 212657
000212657 005__ 20180913063352.0
000212657 0247_ $$2doi$$a10.1021/acsnano.5b01658
000212657 022__ $$a1936-0851
000212657 02470 $$2ISI$$a000355383000091
000212657 037__ $$aARTICLE
000212657 245__ $$aLocal Conformational Switching of Supramolecular Networks at the Solid/Liquid Interface
000212657 260__ $$aWashington$$bAmer Chemical Soc$$c2015
000212657 269__ $$a2015
000212657 300__ $$a7
000212657 336__ $$aJournal Articles
000212657 520__ $$aWe use the electric field in a scanning tunneling microscope to manipulate the transition between open and close packed 2D supramolecular networks of neutral molecules in nonpolar media. We found that while the magnitude of the applied field is not decisive, it is the sign of the polarization that needs to be maintained to select one particular polymorph. Moreover, the switching is independent of the solvent used and fully reversible. We propose that the orientation of the surface dipole determined by the electric field might favor different conformation-depended charge transfer mechanisms of the adsorbates to the surface, inducing open (closed) structures for negative (positive) potentials. Our results show the use of local fields to select the polymorphic outcome of supramolecular assemblies at the solid/liquid interface. The effect has potential to locally control the capture and release of analytes in host guest systems and the 2D morphology in multicomponent layers.
000212657 6531_ $$aself-assembly
000212657 6531_ $$ascanning tunneling microscopy (STM)
000212657 6531_ $$aphase behavior
000212657 6531_ $$amolecular switch
000212657 6531_ $$asurface science
000212657 700__ $$aCometto, Fernando P.$$uEcole Polytech Fed Lausanne, Max Planck EPFL Lab Mol Nanosci, CH-1015 Lausanne, Switzerland
000212657 700__ $$0240038$$aKern, Klaus$$g105546
000212657 700__ $$0246412$$aLingenfelder, Magali$$g168428$$uEcole Polytech Fed Lausanne, Max Planck EPFL Lab Mol Nanosci, CH-1015 Lausanne, Switzerland
000212657 773__ $$j9$$k5$$q5544-5550$$tAcs Nano
000212657 909C0 $$0252366$$pLSEN$$xU10152
000212657 909CO $$ooai:infoscience.tind.io:212657$$pSB$$particle
000212657 937__ $$aEPFL-ARTICLE-212657
000212657 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000212657 980__ $$aARTICLE