Dresden 2009 – scientific programme

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SYSO: Symposium Self-organizing Surfaces and Interfaces

SYSO 3: Self-Organizing Surfaces and Interfaces - Posters

SYSO 3.14: Poster

Wednesday, March 25, 2009, 17:30–19:30, P3

STM STUDY OF SELF-ASSEMBLY AT THE SOLID-LIQUID INTERFACE CONTROLLED BY THE CONCENTRATION OF SOLVED MOLECULES — •Thi Ngoc Ha Nguyen — Reichenhainer Strasse 70 Physik-Neubau 09126 Chemnitz

Trimesic acid (TMA) is known to assemble in diverse supramolecular structures due to the three fold - symetric carboxylic acid functionality for the formation of hydrogen-bond networks since they can act as both H-bond donor and acceptor at the same time, and therefore can bind to themselves in any conformation. The solvent chosen in this experiment is octanoic acid. According to (1), TMA in this solvent can only form chicken-wire structure. But, we found that, depending on concentration of TMA in octanoic acid, that there are also are other structures. We made different solutions with the same amount of solute (TMA) and solvent (octanoic acid) but different concentration of solved TMA by different sonication time