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Ordered Carboxylates on TiO(2)(110) Formed at Aqueous Interfaces
[Image: see text] As models for probing the interactions between TiO(2) surfaces and the dye molecules employed in dye-sensitized solar cells, carboxylic acids are an important class of molecules. In this work, we present a scanning tunneling microscopy (STM) and low-energy electron diffraction (LEE...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical
Society
2014
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4273618/ https://www.ncbi.nlm.nih.gov/pubmed/25550992 http://dx.doi.org/10.1021/jz502249j |
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author | Grinter, David C. Woolcot, Thomas Pang, Chi-Lun Thornton, Geoff |
author_facet | Grinter, David C. Woolcot, Thomas Pang, Chi-Lun Thornton, Geoff |
author_sort | Grinter, David C. |
collection | PubMed |
description | [Image: see text] As models for probing the interactions between TiO(2) surfaces and the dye molecules employed in dye-sensitized solar cells, carboxylic acids are an important class of molecules. In this work, we present a scanning tunneling microscopy (STM) and low-energy electron diffraction (LEED) study of three small carboxylic acids (formic, acetic, and benzoic) that were reacted with the TiO(2)(110) surface via a dipping procedure. The three molecules display quite different adsorption behavior, illustrating the different interadsorbate interactions that can occur. After exposure to a 10 mM solution, formic acid forms a rather disordered formate overlayer with two distinct binding geometries. Acetic acid forms a well-ordered (2 × 1) acetate overlayer similar to that observed following deposition from vapor. Benzoic acid forms a (2 × 2) overlayer, which is stabilized by intermolecular interactions between the phenyl groups. |
format | Online Article Text |
id | pubmed-4273618 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | American Chemical
Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-42736182014-12-28 Ordered Carboxylates on TiO(2)(110) Formed at Aqueous Interfaces Grinter, David C. Woolcot, Thomas Pang, Chi-Lun Thornton, Geoff J Phys Chem Lett [Image: see text] As models for probing the interactions between TiO(2) surfaces and the dye molecules employed in dye-sensitized solar cells, carboxylic acids are an important class of molecules. In this work, we present a scanning tunneling microscopy (STM) and low-energy electron diffraction (LEED) study of three small carboxylic acids (formic, acetic, and benzoic) that were reacted with the TiO(2)(110) surface via a dipping procedure. The three molecules display quite different adsorption behavior, illustrating the different interadsorbate interactions that can occur. After exposure to a 10 mM solution, formic acid forms a rather disordered formate overlayer with two distinct binding geometries. Acetic acid forms a well-ordered (2 × 1) acetate overlayer similar to that observed following deposition from vapor. Benzoic acid forms a (2 × 2) overlayer, which is stabilized by intermolecular interactions between the phenyl groups. American Chemical Society 2014-11-25 2014-12-18 /pmc/articles/PMC4273618/ /pubmed/25550992 http://dx.doi.org/10.1021/jz502249j Text en Copyright © 2014 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. |
spellingShingle | Grinter, David C. Woolcot, Thomas Pang, Chi-Lun Thornton, Geoff Ordered Carboxylates on TiO(2)(110) Formed at Aqueous Interfaces |
title | Ordered
Carboxylates on TiO(2)(110) Formed at Aqueous Interfaces |
title_full | Ordered
Carboxylates on TiO(2)(110) Formed at Aqueous Interfaces |
title_fullStr | Ordered
Carboxylates on TiO(2)(110) Formed at Aqueous Interfaces |
title_full_unstemmed | Ordered
Carboxylates on TiO(2)(110) Formed at Aqueous Interfaces |
title_short | Ordered
Carboxylates on TiO(2)(110) Formed at Aqueous Interfaces |
title_sort | ordered
carboxylates on tio(2)(110) formed at aqueous interfaces |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4273618/ https://www.ncbi.nlm.nih.gov/pubmed/25550992 http://dx.doi.org/10.1021/jz502249j |
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