@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#> .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00702873v1> a dcat:Dataset ;
    dct:description """
              A new photochromic fused 2<i>H</i>-chromene that has a dehydropyran bridge between the pyran double bond and the benzene ring was prepared. Unlike standard 2<i>H</i>-chromenes that give rise to two coloured species (one short- and one long-lived) under UV irradiation, flash photolysis studies on this particular 2<i>H</i>-chromene show that the opening of the pyran ring led to the formation of a single, coloured, open species that bleaches to the uncoloured initial form in <1 ms. The design of this fused 2<i>H</i>-chromene avoids the formation of the undesirable long-lived, transoid-trans, coloured, open form; therefore, the colour fades very quickly, according to monoexponential kinetics, without the persistence of any residual colour commonly observed in 2<i>H</i>-chromenes. Acid treatment of 4-[(ethoxycarbonyl)methyl]-2<i>H</i>-chromenes led to the formation of lactones.
            """ ;
    dct:identifier "hal-00702873" ;
    dct:issued "2026-05-16T12:37:09.032927"^^xsd:dateTime ;
    dct:language "en" ;
    dct:modified "2026-05-16T12:37:09.032933"^^xsd:dateTime ;
    dct:publisher <https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> ;
    dct:title "Synthesis of a photochromic fused 2<i>H</i>-Chromene capable of generating a single coloured species" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "CCSD" ] ;
    dcat:distribution <https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00702873v1/resource/d51a6644-c25a-4c27-94a0-e8f21a0a36b2> ;
    dcat:keyword "benzopyran",
        "chimtheochemical-sciencestheoretical-andor-physical-chemistry",
        "chromene",
        "infoeu-reposemanticsarticle",
        "journal-articles",
        "kinetics",
        "photochromism",
        "photolysis" ;
    dcat:landingPage <ISSN:%201434-193X> .

<ISSN:%201434-193X> a foaf:Document .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00702873v1/resource/d51a6644-c25a-4c27-94a0-e8f21a0a36b2> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2026-05-16T12:37:09.049149"^^xsd:dateTime ;
    dct:modified "2026-05-16T12:37:09.003088"^^xsd:dateTime ;
    dct:title "Synthesis of a photochromic fused 2<i>H</i>-Chromene capable of generating a single coloured species" ;
    dcat:accessURL <https://hal.science/hal-00702873> .

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