{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,12]],"date-time":"2026-03-12T19:11:15Z","timestamp":1773342675160,"version":"3.50.1"},"reference-count":16,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2023,3,31]],"date-time":"2023-03-31T00:00:00Z","timestamp":1680220800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002341","name":"Academy of Finland","doi-asserted-by":"publisher","award":["286844"],"award-info":[{"award-number":["286844"]}],"id":[{"id":"10.13039\/501100002341","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002341","name":"Academy of Finland","doi-asserted-by":"publisher","award":["332023"],"award-info":[{"award-number":["332023"]}],"id":[{"id":"10.13039\/501100002341","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002341","name":"Academy of Finland","doi-asserted-by":"publisher","award":["UIDB\/00313\/2020"],"award-info":[{"award-number":["UIDB\/00313\/2020"]}],"id":[{"id":"10.13039\/501100002341","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002341","name":"Academy of Finland","doi-asserted-by":"publisher","award":["UIDP\/00313\/2020"],"award-info":[{"award-number":["UIDP\/00313\/2020"]}],"id":[{"id":"10.13039\/501100002341","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Portuguese Science Foundation","award":["286844"],"award-info":[{"award-number":["286844"]}]},{"name":"Portuguese Science Foundation","award":["332023"],"award-info":[{"award-number":["332023"]}]},{"name":"Portuguese Science Foundation","award":["UIDB\/00313\/2020"],"award-info":[{"award-number":["UIDB\/00313\/2020"]}]},{"name":"Portuguese Science Foundation","award":["UIDP\/00313\/2020"],"award-info":[{"award-number":["UIDP\/00313\/2020"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Photochem"],"abstract":"<jats:p>Ultraviolet-induced photodissociation and photo-isomerization of the three most stable conformers (SSC, GAC, and AAT) of glycolic acid are investigated in a low-temperature solid argon matrix using FTIR spectroscopy and employing laser radiation with wavelengths of 212 nm, 226 nm, and 230 nm. The present work broadens the wavelength range of photochemical studies of glycolic acid, thus extending the understanding of the overall photochemistry of the compound. The proposed kinetic model for the photodissociation of glycolic acid proceeds from the lowest energy conformer (SSC). The model suggests that ultraviolet light induces isomerization only between the SSC and GAC conformers and between the SSC and AAT conformers. The relative reaction rate coefficients are reported for all proposed reactions. These results suggest that the direct photodissociation of GAC and AAT conformer does not occur in an argon matrix. The main photodissociation channel via the SSC conformer produces formaldehyde\u2013water complexes. The proposed photodissociation mechanism emphasizes that the conformers\u2019 relative abundancies can significantly affect the photodissociation rate of the molecule. For example, in the case of high relative GAC and AAT concentrations, the ultraviolet photodissociation of glycolic acid requires the proceeding photo-isomerization of GAC and AAT to SSC.<\/jats:p>","DOI":"10.3390\/photochem3020013","type":"journal-article","created":{"date-parts":[[2023,3,31]],"date-time":"2023-03-31T10:19:33Z","timestamp":1680257973000},"page":"197-208","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Conformational-Dependent Photodissociation of Glycolic Acid in an Argon Matrix"],"prefix":"10.3390","volume":"3","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0534-8036","authenticated-orcid":false,"given":"Jussi","family":"Ahokas","sequence":"first","affiliation":[{"name":"Financial Services, University of Jyv\u00e4skyl\u00e4, P.O. Box 35, FI-40014 Jyv\u00e4skyl\u00e4, Finland"},{"name":"Department of Chemistry, University Jyv\u00e4skyl\u00e4, P.O. Box 35, FI-40014, Jyv\u00e4skyl\u00e4, Finland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0907-5936","authenticated-orcid":false,"given":"Timur","family":"Nikitin","sequence":"additional","affiliation":[{"name":"CQC-IMS, Department of Chemistry, University of Coimbra, P-3004-535 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5650-8506","authenticated-orcid":false,"given":"Justyna","family":"Krupa","sequence":"additional","affiliation":[{"name":"Faculty of Chemistry, University of Wroc\u0142aw, Joliot-Curie 14, PL-50-383 Wroc\u0142aw, Poland"}]},{"given":"Iwona","family":"Kosendiak","sequence":"additional","affiliation":[{"name":"Faculty of Chemistry, University of Wroc\u0142aw, Joliot-Curie 14, PL-50-383 Wroc\u0142aw, Poland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8264-6854","authenticated-orcid":false,"given":"Rui","family":"Fausto","sequence":"additional","affiliation":[{"name":"CQC-IMS, Department of Chemistry, University of Coimbra, P-3004-535 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6549-1571","authenticated-orcid":false,"given":"Maria","family":"Wierzejewska","sequence":"additional","affiliation":[{"name":"Faculty of Chemistry, University of Wroc\u0142aw, Joliot-Curie 14, PL-50-383 Wroc\u0142aw, Poland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0396-4537","authenticated-orcid":false,"given":"Jan","family":"Lundell","sequence":"additional","affiliation":[{"name":"Department of Chemistry, University Jyv\u00e4skyl\u00e4, P.O. Box 35, FI-40014, Jyv\u00e4skyl\u00e4, Finland"}]}],"member":"1968","published-online":{"date-parts":[[2023,3,31]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2232","DOI":"10.1021\/ja9616793","article-title":"Theory versus Experiment in Jet Spectroscopy: Glycolic Acid","volume":"119","author":"Godfrey","year":"1997","journal-title":"J. Am. Chem. Soc."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"6439","DOI":"10.1021\/jp060602q","article-title":"Experimental and Theoretical Investigation of Vibrational Overtones of Glycolic Acid and Its Hydrogen Bonding Interactions with Water","volume":"110","author":"Havey","year":"2006","journal-title":"J. Phys. Chem. 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