Low-Temperature PM IRRAS of a Monolayer on Au: Spectra of C18D37SH

0477128 - ÚOCHB 2018 RIV US eng J - Článek v odborném periodiku
Mašát, Milan - Wen, Jin - Sofer, Z. - Michl, Josef
Low-Temperature PM IRRAS of a Monolayer on Au: Spectra of C18D37SH.
Langmuir. Roč. 33, č. 23 (2017), s. 5613-5616. ISSN 0743-7463
Grant CEP: GA ČR GA14-02337S
Institucionální podpora: RVO:61388963
Klíčová slova: self-assembled monolayers * gold surface * electrodes
Obor OECD: Organic chemistry
Impakt faktor: 3.789, rok: 2017

We describe an experimental setup suitable for the measurement of photomodulated IR reflection/absorption spectra of monolayers on a flat gold substrate at temperatures from room to 14 K. Results obtained for a monolayer of C18D37SH on gold are shown and compared with IR spectra of C18D37SH in a KBr pellet at these temperatures. Band widths are reduced by only similar to 40%. Upon cooling below 100-150 K, the frequencies and intensities of v(as)(CD3) and v(as)(CD2) bands in the C-D stretching region in both types of spectra undergo reversible changes attributed to disappearance of gauche defects by analogy to the behavior of previously studied chains.
Trvalý link: http://hdl.handle.net/11104/0273508