@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

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    dct:description """
              The present study quantitatively analyses the gated photochromism and the acidity photomodulation properties of a diacid dithienylethene compound. Photoisomerisation between the open and closed isomers was investigated by UV/visible and 1H NMR spectroscopy. It was found that the photocyclisation quantum yield of the diacid form was remarkably high (around 90 %). Partial neutralisation of the open isomer revealed a gated photochromism as the photocyclisation quantum yield of the mono- and dianion were 50 and 67 %, respectively. A considerable photomodulation of the acidity was observed: the closed isomer is more acid than the open one by more than one pK<sub>a</sub> unit. This effect has been shown to be exploitable for a reversible photo-acid generation. This is the first time that a complete quantitative investigation that allows for the determination of the main photochromic, spectral and thermodynamic parameters of a base-sensitive photochromic diarylethene has been carried out.
            """ ;
    dct:identifier "hal-00703646" ;
    dct:issued "2026-05-16T07:05:48.209312"^^xsd:dateTime ;
    dct:language "en" ;
    dct:modified "2026-05-16T07:05:48.209319"^^xsd:dateTime ;
    dct:publisher <https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> ;
    dct:title "Gated photochromism and acidity photomodulation of a diacid dithienylethene dye" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "CCSD" ] ;
    dcat:distribution <https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00703646v1/resource/fd61335a-1318-4b74-a2e4-126d81460db1> ;
    dcat:keyword "acidity",
        "chimtheochemical-sciencestheoretical-andor-physical-chemistry",
        "diarylethenes",
        "dyespigments",
        "infoeu-reposemanticsarticle",
        "isomers",
        "journal-articles",
        "photochromism" ;
    dcat:landingPage <ISSN:%200947-6539> .

<ISSN:%200947-6539> a foaf:Document .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00703646v1/resource/fd61335a-1318-4b74-a2e4-126d81460db1> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2026-05-16T07:05:48.222428"^^xsd:dateTime ;
    dct:modified "2026-05-16T07:05:48.182668"^^xsd:dateTime ;
    dct:title "Gated photochromism and acidity photomodulation of a diacid dithienylethene dye" ;
    dcat:accessURL <https://hal.science/hal-00703646> .

<https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> a foaf:Agent ;
    foaf:name "test_moissonnage_selune" .