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O: Fachverband Oberflächenphysik

O 31: Molecular Films: Properties and Preparation

O 31.3: Vortrag

Dienstag, 1. April 2014, 11:00–11:15, WIL A317

Thermally induced defects in Langmuir-Blodgett films — Jan Weber, Eckart Hasselbrink, and •Thorsten Balgar — Fakultät für Chemie, Universität Duisburg-Essen, Germany

In recent years organic monolayers of long-chain aliphatic molecules are intensively discussed in the context of heterogeneous catalysis, microelectronics or biosensing since they allow for chemical tailoring of various surfaces.[1-3] In this context the inner structure of the monolayer regarding a proper chain alignment is of considerable interest. We have utilized vibrational sum-frequency generation spectroscopy (VSFG) to monitor the creation of conformational chain defects at elevated temperatures. Our study is focused on Langmuir-Blodgett monolayers of long-chain carboxylic acids on glass substrates.

[1] A. Corma and H. Garcia, Adv. Synth. Catal. 348 (2006) 1391

[2] T. Balgar, S. Franzka, E. Hasselbrink and N. Hartmann, Appl. Phys. A 82 (2006) 15

[3] F. Schreiber, Prog. Surf. Sci. 65 (2000) 151