Molecular engineering of cyanine-type fluorescent and laser dyes

Czerney, Peter; Graneß, Gerhard; Birckner, Eckhard; Vollmer, Friedrich; Rettig, Wolfgang

doi:10.1016/1010-6030(94)04018-w

Cited by 70 publications

(44 citation statements)

References 18 publications

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“…CZ 144 (= DY-665-X, Dyomics) was used as a reference dye (F F = 0.60 in CH 2 Cl 2 ). [17] General procedure for the synthesis of NIR dyes 3: POCl 3 (8 mmol) was added to a mixture of DPP 1 (1 mmol) and heteroarylacetonitrile 2 (2.5 mmol) in absolute toluene (20 mL) at reflux in a nitrogen atmosphere. The reaction was monitored by UV/Vis/NIR spectroscopy and thin-layer chromatography.…”

Section: Methodsmentioning

confidence: 99%

Near‐Infrared Dyes and Fluorophores Based on Diketopyrrolopyrroles

et al. 2007

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NIRly there: The chromophore of compounds with intramolecular H bonds have been rigidified by substitution of the protons of the NH⋅⋅⋅N bridges by BR2 groups (R=F, Ph). This stiffening and the polymethine character of the chromophores affords dyes with intense fluorescence at room temperature and high NIR absorption, but virtually no absorption in the visible range (see the picture for an example, —: absorption, ••••: fluorescence).

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Section: Methodsmentioning

confidence: 99%

Near‐Infrared Dyes and Fluorophores Based on Diketopyrrolopyrroles

et al. 2007

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“…They have been advanced as potential hair dyes, [6] 3-Deoxyanthocyanidins and Novel Dicationic Derivatives FULL PAPER laser dyes, [7] or sensitizers for solar cells. [8] Molecular-level memory systems [9] have been based on such structures and their use in the area of self-assembled and interface systems has been reported.…”

Section: Introductionmentioning

confidence: 99%

Rapid Preparation of 3‐Deoxyanthocyanidins and Novel Dicationic Derivatives: New Insight into an Old Procedure

et al. 2007

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Common 3‐deoxyanthocyanidins and original dicationic flavylium‐benzopyrylium derivatives are easily and efficiently synthesized through reactions between the corresponding phenols and aryl ethynyl ketones in the presence of aqueous hexafluorophosphoric acid. The mechanism of the reaction is discussed and two competitive pathways are consistent with our results.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)

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“…Intermediates 2 could be readily deprotonated and treated with electroand xanthylium type are important as absorption/fluorescent probes with high quantum yields, for use in ion de-philes, and subsequent treatment with mineral acids gave the para-electrophile-substituted derivatives 4. Furthertection [1] , as laser dyes [2] and as potential photochemotherapeutic agents [3] . They also occur widely in nature [4] .…”

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confidence: 99%