TOF-SIMS surface analysis of L-Tryptophan self assembled monolayer

• Authors: Marian Petrovic , Ivan Talian , Lenka Skantarova , Andrej Orinak , Dusan Velic
• Languages of publication: EN

Abstracts

EN

This paper dealt with the preparation and characterization of self - assembled monolayersSAM-s of 1-hexadecanethiole and mercapto acetic acid on the silver nanostructure and subsequently the immobilization with amino acid L-Tryptophane. In order to achieve it, we used the electrodeposition of silver onto nanostructured surface of paraffin impregnated graphite electrode (PIGE). Subsequently, we assembled SAM by choosing the 1-hexadecanethiole and mercaptoacetic acid. These two kinds of SAM underwent the functionalization by L-Tryptophan. The observations of silver on PIGE surfaces were performed by scanning electron microscope (SEM). For surface analysis of the SAM functionalized by L-tryphophan, the TOF-SIMS technique was chosen. Finally, the fragmented ions of the immobilized-L-Tryptophan SAM were determined on the basis of suggested residues and three-dimensional structure. The residues show that the ability of L-Tryptophan to build homogeneous structure is better by mercaptoacetic acid SAM structure than by 1-hexadecanethiol. It was observed that L-Tryptophan built compact surface, which, due its chemical properties, can represent very interesting side regarding biocompatibility, homochirality and robustness in the area of life science.

Keywords

EN

Amino acid nanostructure; L-Tryptophan SAM; TOF-SIMS

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2014
• Volume: 12
• Issue: 5
• Pages: 568-576

Dates

published

1 - 5 - 2014

online

21 - 2 - 2014

Contributors

author

Marian Petrovic

• University of Pavol Jozef Safarik, Trieda SNP1

author

Ivan Talian

• University of Pavol Jozef Safarik, Trieda SNP1

author

Lenka Skantarova

• University of Pavol Jozer Safarik

author

Andrej Orinak

• University of Pavol Jozer Safarik

author

Dusan Velic

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Identifiers

DOI

10.2478/s11532-014-0515-5