Modeling colorimetric characteristics of ON–OFF behavior of photochromic dyes based on bis-azospiropyrans

Kandi, Saeideh Gorji; Nourmohammadian, Farahnaz

doi:10.1016/j.molstruc.2013.07.040

Cited by 6 publications

(4 citation statements)

References 16 publications

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“…Therefore, in keeping with our earlier research on the synthesis and properties of symmetrical bisazospiropyran dyes [32,33], we developed in the current study an asymmetric azo spiropyran derivative on an extended conjugation push-pull system, in which two different spiropyrans are linked A C C E P T E D M A N U S C R I P T…”

Section: Introductionmentioning

confidence: 79%

Development of molecular photoswitch with very fast photoresponse based on asymmetrical bis-azospiropyran

Nourmohammadian

Abdi

2016

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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Section: Introductionmentioning

confidence: 79%

Development of molecular photoswitch with very fast photoresponse based on asymmetrical bis-azospiropyran

Nourmohammadian

Abdi

2016

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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“…Colorants have always played a vital role in every medium they are used in, which includes coating, composite and ink [13,14]. Therefore, as expected, one critical and important toner http://dx.doi.org/10.1016/j.porgcoat.2015.01.004 0300-9440/© 2015 Elsevier B.V. All rights reserved.…”

Section: Introductionmentioning

confidence: 93%

Modeling the effect of pigments and processing parameters in polymeric composite for printing ink application using the response surface methodology

Bazrafshan

Ataeefard

Nourmohammadian

2015

Progress in Organic Coatings

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“…Recently, we synthesized and studied the photoresponse of bis‐azospiropyrans connected with a conjugated aromatic bridge . These photoswitches showed a high molar absorption coefficient in the MC form .…”

Section: Introductionmentioning

confidence: 99%

“…32 Recently, we synthesized and studied the photoresponse of bis-azospiropyrans connected with a conjugated aromatic bridge. [33][34][35] These photoswitches showed a high molar absorption coefficient in the MC form. 33 Such a high molar absorption coefficient improves the sensitivity and contradistinction between the two ON (MC) and OFF (SP) levels of finely photoresponsive molecules.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity and Resolution Development of Spiropyran‐based Molecular Photoswitches

Heydaripour

Nourmohammadian

Saadatjoo

2016

J Chinese Chemical Soc

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The phenylazo moiety and its donor‐ and acceptor‐substituted derivatives are studied as effective auxochromes to improve their sensitivity and resolution for distinguishing between the spiro (SP; OFF) and mero (ON) forms in molecular photoswitching applications. Thus, 13 azospiropyran derivatives were synthesized and their spectroscopic and photokinetic behaviors were studied. The quality of photochromic reactions of the synthesized photochromic compounds were compared using a dose–response model. Interestingly, by replacing the nitro group in 6‐nitrospiropyran (ε = 0.42 × 104 M−1 cm−1) with a simple phenylazo moiety, the SP form is still colorless and the color intensity of the merocyanine (MC) form is improved desirably by extending the conjugation length (1a, ε = 1.35 × 104 M−1 cm−1). The presence of a hydrophilic OH group or a CH3 group at the para position of phenylazo moiety revealed more or less the same photochromic properties as 1a. The OCH3 group substituted at position 6 of the phenylazo moiety at the para position of the azobenzene moiety effectively increased the photochromic properties with the maximum k‐value for SP to MC switching. Meanwhile, Cl, Br, COOH, and NO2 groups at the para position of the azobenzene moiety revealed the reduction in photochromic properties compared to 1a.

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Modeling colorimetric characteristics of ON–OFF behavior of photochromic dyes based on bis-azospiropyrans

Cited by 6 publications

References 16 publications

Development of molecular photoswitch with very fast photoresponse based on asymmetrical bis-azospiropyran

Development of molecular photoswitch with very fast photoresponse based on asymmetrical bis-azospiropyran

Modeling the effect of pigments and processing parameters in polymeric composite for printing ink application using the response surface methodology

Sensitivity and Resolution Development of Spiropyran‐based Molecular Photoswitches

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