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Luminescent Hydrogel Particles Prepared by Self-Assembly of β-Cyclodextrin Polymer and Octahedral Molybdenum Cluster Complexes
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SYSNO ASEP 0438713 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Luminescent Hydrogel Particles Prepared by Self-Assembly of β-Cyclodextrin Polymer and Octahedral Molybdenum Cluster Complexes Tvůrce(i) Kirakci, Kaplan (UACH-T) SAI, RID, ORCID
Šícha, Václav (UACH-T) RID, ORCID, SAI
Holub, Josef (UACH-T) SAI, RID, ORCID
Kubát, Pavel (UFCH-W) RID, ORCID, SAI
Lang, Kamil (UACH-T) SAI, RID, ORCIDZdroj.dok. Inorganic Chemistry. - : American Chemical Society - ISSN 0020-1669
Roč. 53, č. 24 (2014), s. 13012-13018Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova Octahedral Molybdenum Cluster ; Hydrogel ; Luminescence Vědní obor RIV CA - Anorganická chemie CEP GA13-05114S GA ČR - Grantová agentura ČR Institucionální podpora UACH-T - RVO:61388980 ; UFCH-W - RVO:61388955 UT WOS 000346544100041 EID SCOPUS 84920145297 DOI 10.1021/ic502144z Anotace A series of luminescent octahedral molybdenum cluster complexes were obtained by treating Na2[Mo6I8(OMe)6] with icosahedral closo-dicarbaborane C-carboxylic acids in refluxing tetrahydrofuran. The study of the photophysical properties of Na2[Mo6I8(1-OOC-1,2-closo-C2B10H11)6] (1), Na2[Mo6I8(1-OOC-1,7-closo-C2B10H11)6] (2), and Na2[Mo6I8(1-OOC-1,12-closo-C2B10H11)6] (3) in acetonitrile revealed a red luminescence with high quantum yields up to 0.93 for 2, an efficient quenching of the luminescence by oxygen, and high quantum yields of singlet oxygen formation of approximately 0.7. Self-assembly between compound 2 and β-cyclodextrin polymer led to monodisperse hydrogel particles with a diameter of approximately 200 nm and unchanged luminescence spectra and kinetics features over 14 days. In contrast, bare cluster complex 2 in water formed aggregates and hydrolyzed over the time as indicated by a progressive red shift of the luminescence maxima. The invariance of key photophysical parameters of the hydrogel particles coupled with a high oxygen sensitivity of the luminescence are attractive features for long-term biological experiments involving optical oxygen probing. In addition, this hydrogel is a singlet oxygen sensitizer in water with promising properties for photodynamic therapy. Pracoviště Ústav anorganické chemie Kontakt Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Rok sběru 2015
Počet záznamů: 1