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Luminescent Porous Silica Fibers as Drug Carriers
Author(s) -
Hou Zhiyao,
Zhang Cuimiao,
Li Chunxia,
Xu Zhenhe,
Cheng Ziyong,
Li Guogang,
Wang Wenxin,
Peng Chong,
Lin Jun
Publication year - 2010
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201000900
Subject(s) - luminescence , materials science , photoluminescence , silica fiber , scanning electron microscope , transmission electron microscopy , fourier transform infrared spectroscopy , chemical engineering , fiber , porosity , electrospinning , desorption , adsorption , spectroscopy , analytical chemistry (journal) , nanotechnology , composite material , chemistry , optoelectronics , chromatography , organic chemistry , polymer , fiber laser , engineering , physics , quantum mechanics
Abstract Luminescent and porous silica fibers have been successfully prepared by using the electrospinning process. The obtained multifunctional silica fibers, which possess a porous structure and display blue luminescence, can serve as a drug delivery host carrier, using ibuprofen (IBU) as a model drug, allowing the investigation of storage/release properties. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier‐transform infrared spectroscopy (FT‐IR), N 2 adsorption/desorption, photoluminescence (PL) spectra, and kinetic decay were used to characterize the structural, morphological, and optical properties of the as‐obtained samples. The results reveal that the multifunctional silica materials exhibit an irregular porous structure, and display a fiberlike morphology with dimensions of several hundred nanometers in width and several millimeters in length. The obtained silica fibers exhibit an intense broad bluish emission, which might be attributed to impurities and/or defects in the silica fibers. The IBU‐loaded silica fiber system shows blue luminescence under UV irradiation and controlled release behavior for IBU. In addition, the emission intensities of silica fibers in the drug carrier system vary with the released amount of IBU, thus allowing the drug release to be easily tracked and monitored by the change of the luminescence intensity.