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Self-produced bubble-template synthesis of La2O3:Yb/Er@Au hollow spheres with markedly enhanced luminescence and release properties
Ruichan Lv; Guixin Yang; Yunlu Dai; Shili Gai; Fei He; Piaoping Yang
2014
Source PublicationCrystEngComm
ISSN1466-8033
Volume16Pages:9612-9621
Abstract

We report for the first time a self-produced bubble-template synthesis of La2O3:Yb/Er hollow mesoporous spheres (HMSs) through a facile one-step co-precipitation process. The temperature, which determines bubble formation, and the amounts of citric acid and NaOH, which determine dispersibility, are the main factors in the formation of La2O3:Yb/Er HMSs. Au nanocrystals (NCs) with a particle size of 9 nm were conjugated to the as-prepared HMSs without adding any organic reagents. It is noted that the up-conversion (UC) luminescence intensity of La2O3:Yb/Er@Au was markedly improved by 49.7-fold under low pump power, and the lifetime has been greatly enhanced due to the local field enhancement (LFE) of Au NCs, which effectively prevents the energy transfer from La2O3:Yb/Er to Au nanoparticles (NPs). The enhanced properties have been successfully proved by discrete-dipole approximation (DDA) simulation. The as-prepared La2O3:Yb/Er@Au HMSs with large surface area (118 m2 g−1) and mesoporous feature (2.92 nm in pore size) exhibit good compatibility. In addition, doxorubicin (DOX) release properties and obvious cytotoxicity to MCF-7 tumor cells reveal their potential application as a drug carrier. In particular, the facile and mass-production synthetic strategy may pave the way for the production of a wide class of materials.

DOIhttp://doi.org/10.1039/C4CE01063A
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Crystallography
WOS SubjectChemistry, Multidisciplinary ; Crystallography
WOS IDWOS:000343035400007
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Cited Times [WOS]:7   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionFaculty of Health Sciences
Corresponding AuthorPiaoping Yang
AffiliationKey Laboratory of Superlight Materials and Surface Technology, 15 Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China
Recommended Citation
GB/T 7714
Ruichan Lv,Guixin Yang,Yunlu Dai,et al. Self-produced bubble-template synthesis of La2O3:Yb/Er@Au hollow spheres with markedly enhanced luminescence and release properties[J]. CrystEngComm,2014,16:9612-9621.
APA Ruichan Lv,Guixin Yang,Yunlu Dai,Shili Gai,Fei He,&Piaoping Yang.(2014).Self-produced bubble-template synthesis of La2O3:Yb/Er@Au hollow spheres with markedly enhanced luminescence and release properties.CrystEngComm,16,9612-9621.
MLA Ruichan Lv,et al."Self-produced bubble-template synthesis of La2O3:Yb/Er@Au hollow spheres with markedly enhanced luminescence and release properties".CrystEngComm 16(2014):9612-9621.
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