Azocalixarenes. 2

Karcı, Fikret; Şener, İzzet; Deligöz, Hasalettin

doi:10.1016/j.dyepig.2003.11.017

Cited by 35 publications

(28 citation statements)

References 14 publications

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“…These results indicate that dye 1 and dye 5 were found state of common anions forms in DMSO and chloroform+piperidine, respectively. Similar effects are apparent in substituted phenylazocalix [6]arenes [14].…”

Section: Substituent Effectsmentioning

confidence: 55%

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Azocalixarenes. 3

et al. 2004

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Section: Substituent Effectsmentioning

confidence: 55%

“…Azocalixarenes compounds containing calix[n]aren as coupling components have also been described as having from blue to violet various publications [10][11][12]. As a continuation of our previous work in this area [13,14], we report here in the synthesis of the calix [4]arenes 1-6 having calix [4]arene as the coupling component (Scheme 1).…”

Section: Introductionmentioning

confidence: 90%

Azocalixarenes. 3

et al. 2004

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“…The choice of solvent is based on polarity/dielectric constant. The visible absorption spectra of the compounds were found to exhibit strong solvent dependency but did not show expected regular variation with the polarity of the solvent [44]. On inspection of the results reported in Table 1, we did not find any regular bathochromic or hypsochromic shift except that all dyes in all solvents show the negative solvatochromism with respect to dichloromethane (DCM).…”

Section: Effect Of Solvent On Absorption Spectra Of Dyesmentioning

confidence: 69%

“…Results in Table 1 reveal that the introduction of electronwithdrawing nitro, carboxy, and chloro groups and electrondonating methoxy and methyl groups in the benzene rings groups did not show a regular variation in all solvents [44]. Only plausible explanation for this irregular behavior may be due to the supramolecular structure of these dyes with intramolecular hydrogen bonding, having great potential of interacting with the solvent molecules through non-covalent or non-conventional interactions.…”

Section: Effect Of Substituent On Absorption Spectra Of Dyesmentioning

confidence: 97%

“…It has been known for many years that azo compounds are most widely used class of dyes due to their versatile application in various fields such as the dyeing of textile fiber, the coloring of different materials, colored plastics, biological-medical studies and advanced application in organic synthesis [32][33][34][35]. There have been few reports wherein macrocycles such as crown ethers [36] and calixarenes [37][38][39][40] have been used as components for the preparation of azo dyes but the research in the area of azocalix [4]resorcinarene dyes [41] is still in infancy.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, spectral characterization of azo dyes derived from calix[4]resorcinarene and their application in dyeing of fibers

2008

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Seven new upper rim functionalized azocalix[4]resorcinarene dyes have been synthesized by coupling calix[4]resorcinarene with different diazo compounds of p-chloroaniline, p-nitroaniline, p-toludine, p-anisidine, p-aminobenzoic acid, o-aminophenol, and aniline. The characterization of these dyes has been carried out by elemental analysis, FT-IR, 1 H-and 13 C-NMR. Effect of solvents of varying dielectric constants on the absorption spectra of substituted and unsubstituted azocalix[4]resorcinarene dyes have been examined by UV-vis spectrophotometer. These azocalix[4]resorcinarene dyes have also been used for dyeing textile fibers like cotton, silk, and wool. Their dyeing and fastness properties have also been discussed.

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Synthesis and characterization of tetrakis‐ derivatives of bisphenol‐A with 4‐phenylazoaniline and 5‐(4‐aminophenylazo)‐25,26,27‐tribenzoyloxy‐ 28‐hydroxycalix[4]arene

Karakuş¹,

Deligöz²

2011

J of Applied Polymer Sci

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The synthesis of tetrakis‐ derivatives of bisphenol‐A containing azo groups at their 2,2′,6,6′‐positions is reported. Novel examples of bisphenol‐A, coupled with diazonium salts and derived from 4‐phenylazoaniline and 5‐(4‐aminophenylazo)‐25,26,27‐tribenzoyloxy‐28‐hydroxycalix [4]arene, have been synthesized. It has been observed that the coupling reaction of diazonium salt obtained from 4‐phenylazoaniline with bisphenol‐A gives tetrakis‐ while those derived from 5‐(4‐aminophenylazo)‐25,26,27‐tribenzoyloxy‐28‐hydroxycalix [4]arene give partially substituted bisphenol‐A analogues. The newly prepared tetrakis‐azo substituted bisphenol‐A compounds (1 and 2) are characterized by using UV‐vis, FT‐IR, 1H‐NMR spectroscopic methods as well as elemental analysis techniques. These azo compounds give rise to bathochromic shifts in the absorption spectra, which can even be detected by “naked eye.” © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011

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Azocalixarenes. 2

Cited by 35 publications

References 14 publications

Azocalixarenes. 3

Azocalixarenes. 3

Synthesis, spectral characterization of azo dyes derived from calix[4]resorcinarene and their application in dyeing of fibers

Synthesis and characterization of tetrakis‐ derivatives of bisphenol‐A with 4‐phenylazoaniline and 5‐(4‐aminophenylazo)‐25,26,27‐tribenzoyloxy‐ 28‐hydroxycalix[4]arene

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