Synthesis, characterization and visible spectral behaviour of some novel methine, styryl and aza-styryl cyanine dyes

Shindy, H. A.

doi:10.1016/j.dyepig.2006.06.008

Cited by 5 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, they can be used as a laser or textile dyes, photosensitizers for silver halide emulsion, for optical recording materials, etc. [21][22][23]. In recent years, interest for synthesis and application of styrylcyanine dyes has grown due to their use as a fluorescent probes in bioanalytical methods for DNA or RNA analyses [24,25].…”

Section: Introductionmentioning

confidence: 99%

Crystal structure and synthesis of benzimidazole substituted acrylonitriles and benzimidazo[1, 2-a]quinolines

2009

View full text Add to dashboard Cite

The benzimidazole compounds and benzoannulated cyclic benzimidazole analogues, such as benzimidazo[1,2-a]quinolines, are a part of our wider investigation on biologically active compounds, potential antitumor drugs. Here, we present the synthesis of two compounds,[2-(1H-benzimidazol-2-yl)-3-(4-bromophenyl)-acrylonitrile, 5] and [2-bromo-benzimidazo[1,2-a]quinoline-6-carbonitrile, 7] and their crystal structures revealed by X-ray single crystal diffractometry. We also report the molecular and crystal structures of two additional compounds [2-(1H-benzimidazol-2-yl)-3-(4-cyanophenyl)-acrylonitrile, 4] and [benzimidazo[1,2-a]quinoline-2,6-dicarbonitrile, 6], whose synthesis and spectroscopic characterization have been published earlier by us too (Hranjec and Karminski-Zamola, Molecules 12:1817, 2007). The compounds 4 and 5 crystallize as monohydrates. The dihedral angles calculated between phenyl and benzimidazole ring reflect not significant deviation from molecular planarity in the crystalline state for 4 and 5, while benzoannulated cyclic benzimidazole derivatives 6 and 7 are essentially planar. The crystal structures of 4 and 5 are characterized by O-HÁÁÁN and N-HÁÁÁO hydrogen bonds between water molecule of crystallization and imidazole NH group as well as CN group, while in 6 and 7 only weak C-HÁÁÁN intermolecular hydrogen bonds exist. Although, crystal packings are analogous in 4 and 5, the molecular conformations differ slightly. In 6 there is one C-HÁÁÁN hydrogen bond that do not exist in 7.

show abstract

Section: Introductionmentioning

confidence: 99%

Crystal structure and synthesis of benzimidazole substituted acrylonitriles and benzimidazo[1, 2-a]quinolines

2009

View full text Add to dashboard Cite

show abstract

“…In addition, styryl cyanine dyes are also widely used as sensitisers and other additives in the photographic industry (Mees and James, 1979;Hamer, 1964;Pierre, 1984), and these dyes represent an important group of biologically active compounds and are widely applied in the pharmaceutical industry (Preston, 1980). Besides, styryl cyanine dyes (Antonious, 1997;Kabatc, et al, 2006;Huang and Coull, 2008;Shindy, 2007; Chemistry International 5(2) (2019) 117-125…”

Section: Introductionmentioning

confidence: 99%

Novel styryl and aza-styryl cyanine dyes: Synthesis and spectral sensitization evaluation

Int¹

2019

Preprint

View full text Add to dashboard Cite

Novel styryl cyanine dyes and aza-styryl cyanine dyes having the nucleus of furo[(3,2-d)pyrazole;(3',2'-d)oxazole] iodide salt were prepared. Spectral sensitization evaluation for all the synthesized styryl and aza-styryl cyanine dyes was carried out through investigating their electronic visible absorption spectra in 95% ethanol solution. The dyes were thought to be better spectral sensitizers when they absorb light at longer wavelength bands (bathochromic shifted and/or red shifted dyes). Consequently the spectral sensitization of the dyes decreased when they absorb light at shorter wavelength bands (hypsochromic shifted and/or blue shifted dyes). The results discussed in this study revealed that the spectral sensitization properties of the examined dyes is highly effected by the type of the X substituted in the phenyl ring system for the styryl cyanine dyes and by the type of the phenyl and/or the naphthyl ring system for the aza-styryl cyanine dyes. Structural confirmations were identified by elemental analysis, visible spectra, IR and 1H NMR spectroscopic data.

show abstract

Synthesis, crystal structure, and spectroscopic properties of new stilbazolium salt with enlarged π-conjugated system

Todorova

Bakalska

Kolev

2013

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

View full text Add to dashboard Cite

Synthesis, characterization and visible spectral behaviour of some novel methine, styryl and aza-styryl cyanine dyes

Cited by 5 publications

References 5 publications

Crystal structure and synthesis of benzimidazole substituted acrylonitriles and benzimidazo[1, 2-a]quinolines

Crystal structure and synthesis of benzimidazole substituted acrylonitriles and benzimidazo[1, 2-a]quinolines

Novel styryl and aza-styryl cyanine dyes: Synthesis and spectral sensitization evaluation

Synthesis, crystal structure, and spectroscopic properties of new stilbazolium salt with enlarged π-conjugated system

Contact Info

Product

Resources

About