Excitation wavelength-dependent multi-coloured and white-light emissive pyrene-based hydrazones: suppression of Kasha's rule

Multi-coloured and white-light emissions from pyrene-based hydrazones are described. They exhibit excitation wavelength-dependent emissions in solution due to the suppression of Kasha's rule. Interestingly, in dimethylformamide, 1 - 3 emit light that covers all the regions of primary colours as...

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Published inChemical communications (Cambridge, England) Vol. 59; no. 95; pp. 14122 - 14125
Main Authors M, Naveen Kumar, Lyngkhoi, Deikrisha Lyngdoh, Gaikwad, Sudhakar, Samanta, Jayanta, Ahamed, Rafiq, Khatua, Snehadrinarayan, Pramanik, Susnata
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 28.11.2023
Subjects
Dimethylformamide
Excitation
Hydrazones
Light emission
White light
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ISSN1359-7345
1364-548X
1364-548X
DOI10.1039/d3cc04584f

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Summary:Multi-coloured and white-light emissions from pyrene-based hydrazones are described. They exhibit excitation wavelength-dependent emissions in solution due to the suppression of Kasha's rule. Interestingly, in dimethylformamide, 1 - 3 emit light that covers all the regions of primary colours as a function of excitation wavelength, and 1 and 2 emit white light ( λ ex = 420 nm) in isopropanol. Multi-coloured and white-light emissions from pyrene-based hydrazones are described.
Bibliography:For ESI and crystallographic data in CIF or other electronic format see DOI
2294513
https://doi.org/10.1039/d3cc04584f
Electronic supplementary information (ESI) available: Detailed synthetic procedure, characterization, necessary spectra, and theoretical data. CCDC
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ISSN:1359-7345
1364-548X
1364-548X
DOI:10.1039/d3cc04584f