Extended Reichardt's Dye–Synthesis and Solvatochromic Properties
Abstract: Three new pyridinium‐phenolate dyes based on the benchmark solvatochromic dye Betaine 30 were synthesised. The dyes contained phenylene spacers between the donor and acceptor groups. Their UV‐Vis absorption spectra were measured, with the dyes showing strong negative solvatochromic behaviour comparable to that of Betaine 30. These results stood in contrast to the behaviour of the π‐extended dye Betaine 21, originally reported in 1963. This dye was synthesised and found to be significantly more solvatochromic than previously reported but prone to degrade. All π‐extended dyes synthesised were found to be unstable in certain solvents. Although the increased distance between donor and acceptor did not enhance solvatochromism to the extent predicted, it was still determined that the reduced planarity caused by a phenylene spacer is not as detrimental as believed.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Extended Reichardt's Dye–Synthesis and Solvatochromic Properties ; day:03 ; month:05 ; year:2024 ; extent:10
Chemistry - a European journal ; (03.05.2024) (gesamt 10)
- Urheber
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Franzese, Stephen
Saker Neto, Nicolau
Wong, Wallace W. H.
- DOI
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10.1002/chem.202400314
- URN
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urn:nbn:de:101:1-2405031443482.091691661553
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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14.08.2025, 11:02 MESZ
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Beteiligte
- Franzese, Stephen
- Saker Neto, Nicolau
- Wong, Wallace W. H.
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