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Mechanisms of Tenebrescence and Persistent Luminescence in Synthetic Hackmanite Na8Al6Si6O24(Cl,S)(2)
Univ Turku, Dept Chem, FI-20014 Turku, Finland..
Polish Acad Sci, Inst Low Temp & Struct Res, PL-50422 Wroclaw, Poland..
Univ Turku, Dept Chem, FI-20014 Turku, Finland..
Univ Turku, Dept Chem, FI-20014 Turku, Finland.;Univ Turku Grad Sch UTUGS, Doctoral Programme Phys & Chem Sci, FI-20014 Turku, Finland..
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2016 (Engelska)Ingår i: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 8, nr 18, s. 11592-11602Artikel i tidskrift (Refereegranskat) Published
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Abstract [en]

Synthetic hackmanites, Na8Al6Si6O24(Cl,S)(2), showing efficient purple tenebrescence and blue/white persistent luminescence were studied using different spectroscopic techniques to obtain a quantified view on the storage and release of optical energy in these materials. The persistent luminescence emitter was identified as impurity Ti3+ originating from the precursor materials used in the synthesis, and the energy storage for persistent luminescence was postulated to take place in oxygen vacancies within the aluminosilicate framework. Tenebrescence, on the other hand, was observed to function within the Na-4(Cl,S) entities located in the cavities of the aluminosilicate framework. The mechanism of persistent luminescence and tenebrescence in hackmanite is presented for the first time.

Ort, förlag, år, upplaga, sidor
2016. Vol. 8, nr 18, s. 11592-11602
Nyckelord [en]
markers, persistent luminescence, tenebresence, photochromism, hackmanite, sodalite, XPS, NMR, EPR
Nationell ämneskategori
Materialkemi
Identifikatorer
URN: urn:nbn:se:uu:diva-297786DOI: 10.1021/acsami.6b01959ISI: 000375521000047PubMedID: 27088662OAI: oai:DiVA.org:uu-297786DiVA, id: diva2:943606
Forskningsfinansiär
EnergimyndighetenKnut och Alice Wallenbergs StiftelseEU, FP7, Sjunde ramprogrammet, 312284Tillgänglig från: 2016-06-28 Skapad: 2016-06-28 Senast uppdaterad: 2017-11-28Bibliografiskt granskad

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