Rhodamine B-co-condensed spherical SBA-15 nanoparticles: facile co-condensation synthesis and excellent fluorescence features

He, Qianjun, Shi, Jianlin, Cui, Xiangzhi, Zhao, Jinjin, Chen, Yu and Zhou, Jian (2009) Rhodamine B-co-condensed spherical SBA-15 nanoparticles: facile co-condensation synthesis and excellent fluorescence features. Journal of Materials Chemistry, 19 21: 3395-3403. doi:10.1039/b900357f


Author He, Qianjun
Shi, Jianlin
Cui, Xiangzhi
Zhao, Jinjin
Chen, Yu
Zhou, Jian
Title Rhodamine B-co-condensed spherical SBA-15 nanoparticles: facile co-condensation synthesis and excellent fluorescence features
Journal name Journal of Materials Chemistry   Check publisher's open access policy
ISSN 0959-9428
1364-5501
Publication date 2009-06-07
Sub-type Article (original research)
DOI 10.1039/b900357f
Open Access Status Not Open Access
Volume 19
Issue 21
Start page 3395
End page 3403
Total pages 9
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Language eng
Abstract Novel rhodamine B-co-condensed spherical SBA-15 nanoparticles (RhB-Cc-SBA-15NPs) and rhodamine B-post-grafted short columnar SBA-15 nanoparticles (RhB-Pg-SBA-15NPs) have been synthesized by a facile co-condensation approach and a relatively complicated post-grafting route, respectively. SEM, TEM, SAXRD, FTIR, absorption spectroscopy, fluorescence spectroscopy and nitrogen adsorption-desorption techniques were employed to characterize the morphology, the mesostructure and the spectral features of fluorescence nanocomposites with different doping amounts of RhB. The results show that (1) the facile co-condensation method involves an electron-donor- acceptor (EDA) composite micelle, which plays two significant roles of uniformly dispersing RhB groups within the ordered mesopore channels and effectively adjusting the morphology and particle size of SBA-15 in the nano-scale; (2) novel spherical RhB-Cc-SBA-15NPs with a uniform particle size of ca. 400 nm have been obtained for the first time; (3) large numbers of RhB groups are covalently bound and monodisperse within the ordered mesoporous channels of the RhB-Cc-SBA-15NPs owing to the facile co-condensation method, however, most probably aggregated on the outside surface of the RhB-Pg-SBA-15NPs; (4) compared with other dye-doped silica materials reported previously, RhB-Cc-SBA-15NPs exhibit uniform size, high dispersivity and doping amounts of the bound RhB, high fluorescence quantum yields and fluorescence detectivity, and excellent photostability. RhB-Cc-SBA-15NPs, combining the advantages of a well-defined morphology and mesostructure, exhibit excellent fluorescence features, and present great potential for applications in drug delivery and fluorescence probing for medical diagnosis and synchronous therapy.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemical Engineering Publications
 
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