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SG is supported by national funds (OE), through FCT, I.P., in the scope of the framework contract foreseen in the numbers 4, 5, and 6 of the art 23, DL 7\/2016, of 08\/29, changed by Law 57\/2017, of July 19. LFBF the FCT for his PhD grant (SFRH\/BD\/150663\/2020)."],"award-info":[{"award-number":["REQUIMTE (UIDB\/50006\/2020); CICECO-Aveiro Institute of Materials (UID\/CTM\/50011\/2019, UIDB\/50011\/2020 & UIDP\/50011\/2020); Portuguese NMR Network, PAGE project (CENTRO-01-0145-FRDER-000003, CICE research contract). SG is supported by national funds (OE), through FCT, I.P., in the scope of the framework contract foreseen in the numbers 4, 5, and 6 of the art 23, DL 7\/2016, of 08\/29, changed by Law 57\/2017, of July 19. LFBF the FCT for his PhD grant (SFRH\/BD\/150663\/2020)."]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["chemistry-europe.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Chemistry A European J"],"published-print":{"date-parts":[[2022,9,22]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The dynamic nature of excited\u2010state intramolecular proton transfer (ESIPT) and its effect on emission spectra is an attractive strategy to create multi\u2010emissive dyes. Here we describe the behavior of a series of hydrogen\u2010bonded triphenylpyridines with a set of donor\u2013acceptor combinations that allowed us to perceive the influence of each substitution on the photophysical properties of the dyes. The susceptibility of these ESIPT moieties to pH variations was also studied, elucidating that the level of protonation had a significant effect on the emission color. The assignment of each emission band was made by using DFT and td\u2010DFT calculations that were in agreement with the experimental results. This study emphasizes the versatility of triphenylpyridines that can be synthesized effortlessly with a logical and independent C\u20102, C\u20104 and C\u20106 substitution in order to have the desired ESIPT modulation and subsequent multi\u2010emission response.<\/jats:p>","DOI":"10.1002\/chem.202201844","type":"journal-article","created":{"date-parts":[[2022,7,17]],"date-time":"2022-07-17T22:23:13Z","timestamp":1658096593000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Influence of the Intramolecular Hydrogen Bond on the Fluorescence of 2\u2010<i>ortho<\/i>\u2010Aminophenyl Pyridines"],"prefix":"10.1002","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5185-7042","authenticated-orcid":false,"given":"C\u00e1tia I. 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