Adsorption of Phenylboronic Acid Derivatives on Rutile TiO2(110)

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10492086" target="_blank" >RIV/00216208:11320/24:10492086 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=7T90BlJ-ox" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=7T90BlJ-ox</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.jpcc.4c03264" target="_blank" >10.1021/acs.jpcc.4c03264</a>

Result language
angličtina
Original language name
Adsorption of Phenylboronic Acid Derivatives on Rutile TiO2(110)
Original language description
Using high-resolution synchrotron-radiation photoelectron spectroscopy and near-edge X-ray-absorption fine structure, we have investigated the adsorption of three phenylboronic acid derivatives on rutile TiO2(110) at 300-700 K: 4-acetylphenylboronic acid, 1,4-phenylenediboronic acid, and 2,4,6-triphenylboroxine. Both 4-acetylphenylboronic acid and 1,4-phenylenediboronic acid adsorb in a singly deprotonated monodentate configuration at 300 K, which converts to a fully deprotonated bidentate species at 550 K. 2,4,6-Triphenylboroxine undergoes a ring-opening reaction upon adsorption on the surface and forms the fully deprotonated bidentate species already at 300 K. In the case of 1,4-phenylenediboronic acid, the upward-pointing boronic-acid groups polymerize into boronic anhydride chains upon heating starting at 350 K. For 2,4,6-triphenylboroxine, we find a slow boron-carbon bond cleavage over a wide temperature range, resulting in a slow disappearance of the phenyl rings from the surface. For 4-acetylphenylboronic acid, we observe a loss of the carbonyl group at 500-550 K. In addition, we observe the formation of trigonal boron oxide (B2O3) for all three molecules at temperatures above 600 K.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)

Project
<a href="/en/project/LM2023072" target="_blank" >LM2023072: Surface Physics Laboratory – Hydrogen Technology Centre</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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