SPECTROKINETIC INVESTIGATION OF THE PHOTOCHROMIC SYSTEM UNDER CONTINUOUS UV IRRADIANCE USING REFLECTANCE VS. TIME CURVES

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dc.contributor.authorSolanki, Utkarshsinh B.
dc.contributor.authorViková, Martina
dc.contributor.authorVik, Michal
dc.contributor.organizationTechnická univerzita v Liberci
dc.date.accessioned2024-10-01T09:40:44Z
dc.date.available2024-10-01T09:40:44Z
dc.description.abstractThe photochromic properties of the dye 5-chloro-1,3,3-trimethylspiro[indoline-2,3'-[3H] naphtho[2,1-b] [1,4]- oxazine] were investigated by exposing it to continuous monochromatic irradiation using 360 nm ultraviolet irradiation using photochromic prints at 293.15  2 K; it undergoes a photocoloration and photodecoloration state, thus following the dynamics of a photochromic cycle of growth and decay phase, respectively. Even if the isolated photo isomeric form of the photochromic dye structure is unavailable, one can quantitatively analyse the photo-induced kinetics of photochromic systems using the raw reflectance data. The quantum colour yield is represented by colour span values [K/S] obtained by converting reflectance data to Kubelka- Munk values. The dynamics of the photoreaction in a photochromic system can be examined by analysing the constants for the rate of colouration and decolouration caused by light. By employing first-order kinetics, the dependent dominant wavelength [max] can be determined by fitting the raw data obtained as a change in reflectance values from the FOTOCHROM3 spectrophotometer. The relationship between the colour span values and the concentration of the photochromic dye employed in the photochromic prints is linear.cs
dc.formattext
dc.format.extent7 stran
dc.identifier.doi10.15240/tul/008/2024-2-005
dc.identifier.issn1335-0617
dc.identifier.urihttps://dspace.tul.cz/handle/15240/175348
dc.language.isocscs
dc.publisherTechnical University of Liberec
dc.publisher.abbreviationTUL
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dc.relation.ispartofFibres and Textiles
dc.subjectPhotokineticscs
dc.subjectPhotochromic systemcs
dc.subjectSpiroxazine dyecs
dc.subjectColour span valuescs
dc.subjectUV irradiancecs
dc.titleSPECTROKINETIC INVESTIGATION OF THE PHOTOCHROMIC SYSTEM UNDER CONTINUOUS UV IRRADIANCE USING REFLECTANCE VS. TIME CURVESen
dc.typeArticleen
local.accessopen access
local.citation.epage41
local.citation.spage35
local.facultyFaculty of Textile Engineeringen
local.fulltextyesen
local.relation.issue2
local.relation.volume31
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