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Inne
Cu(II) recognition materials: fluorophores grafted on mesoporous silica supports.
Autorzy
Rok wydania
2007
Czasopismo
Numer woluminu
254
Strony
441-451
DOI
10.1016/j.apsusc.2007.06.006
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
There were designed and synthesized naphthalene and pyrene derivatives consisting of fluorophore group and of receptor fragment with donor N and O atoms. These fluorosensors were covalently attached by grafting carboxyl group to surfaces of silica xerogel or mesoporous silicas (MCM-41 and MCM-48) functionalized either with 3-aminopropyl or 3-glycidoxypropyl groups. The pyrene derivatives 2 and 3 covalently grafted on MCM-48 silica functionalized with 3-aminopropyl groups are potential recognition elements of a fluorescence chemical sensor.Fluorescence emission of the prepared recognition materials is quenched specifically owing to photoinduced electron transfer (PET) effect after coordination reactions with Cu(II) ions. Moreover, both the materials exhibit selectivity for Cu(II) ions in aqueous solutions in presence of such metal ions as: alkali, alkaline earth and transition. During UV irradiation the studied recognition elements undergo slowly photochemical degradation.
Słowa kluczowe
Mesoporous silica, Pyrene derivative, Fluorescence emission, Fluorophore, Recognition element
Adres publiczny
https://doi.org/10.1016/j.apsusc.2007.06.006
Strona internetowa wydawcy
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