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Onset of Crystalline Order in 1-Nonanethiol Monolayers Deposited from Solution


  • The authors thank Dr. O. Seeck for his fruitful help at the W1.1 beamline in Hasylab. We acknowledge the financial support of MCYT, Spain, grant nos. MAT2004-2007, CTQ 2005-01184, CAM, Spain, grant no. 07N/0023/2002, and the EC under the FP6 “Structuring the European Research Area” Programme Contract RII3-CT-2004-506008


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Reversible switching between order and disorder in a 1-nonanethiol selfassembled monolayer (SAM) is easily accomplished by alternately exposing the monolayer to liquid ethanol then to a helium stream (see picture). Upon removing the liquid phase, the development of crystalline order in the monolayer takes place over a time scale of hours, which implies the sequential crystallization of individual thiol domains.

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