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Their fundamental properties were investigated by XRD analysis, differential scanning calorimetry, thermogravimetric analysis, cyclic voltammetry, UV\u2013Vis absorption spectroscopy, Hyper\u2010Rayleigh Scattering, and NMR spectroscopy; the experimental results were further corroborated by DFT calculations. Thermal robustness, the HOMO\/LUMO levels, and the absorption properties were altered mostly by substituting the\n                    <jats:italic>N<\/jats:italic>\n                    \u2013methylpyrrole moiety and further fine\u2010tuned by modifying the benzene substituents. The pyrrole substituent also proved crucial for the second\u2010order non\u2013linear optical (NLO) response as well as the photoswitching performance. Both fast and slow molecular switches can be designed with the half\u2013life of the (\n                    <jats:italic>Z<\/jats:italic>\n                    ) \u2013isomer ranging from 48\u2005seconds to 23.28\u2005hours and the\n                    <jats:italic>E<\/jats:italic>\n                    \/\n                    <jats:italic>Z<\/jats:italic>\n                    molar ratio up to 12\/88. This comprehensive study allowed elucidation of the fundamental structure\u2010property relationships and subsequently addresses the key aspects of the property tuning via substitution in molecular azo\u2010photoswitches.\n                  <\/jats:p>","DOI":"10.1002\/chem.202404221","type":"journal-article","created":{"date-parts":[[2024,12,28]],"date-time":"2024-12-28T05:29:32Z","timestamp":1735363772000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Property Tuning in\n                    <i>N<\/i>\n                    \u2010Methylpyrrole Azo\u2010Photoswitches via Modification of the Peripheral Substituents"],"prefix":"10.1002","volume":"31","author":[{"given":"Veronika","family":"Jel\u00ednkov\u00e1","sequence":"first","affiliation":[{"name":"Institute of Organic Chemistry and Technology Faculty of Chemical Technology University of Pardubice  Studentsk\u00e1 573 Pardubice 53210 Czech 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