Abstract
This article demonstrates the influence of various surfactants of different polarities—anionic, sodium dodecyl sulfate, cationic,
hexadecyltrimethylammonium bromide and non-ionic, and polyoxyethylene iso-octyl phenyl ether (TX-100)—on the formation of
CdSe nanoparticles in aqueous solutions. The surfactant-stabilizing effect has been monitored using transmission electron
microscopy. Spectral properties of CdSe nanoparticles have been investigated; the structure of the long-wave edge of the fundamental
absorption band of CdSe nanoparticles has been analyzed. It has been shown that the variation of the synthesizing conditions
(stabilizer’s nature and concentration, CdSe concentration, etc.) allows the tailoring of the CdSe nanoparticle size in the
range of 8–17 nm. Lifshitz–Slyrzov–Wagner kinetic analysis has also been performed using the size variation according to ripening
temperature and time period. The differences in the stabilization ability of tested substances are discussed with respect
to their structure and possible mechanism of the surface interaction with the nanoparticles. The flexible surface chemistry
of the CdSe-micelles causes them to be water soluble and allows their further conjugation with protein molecules through electrostatic
attraction. The interaction between functionalized CdSe nanoparticles with protein molecules have been investigated using
fluorescence spectroscopy.
hexadecyltrimethylammonium bromide and non-ionic, and polyoxyethylene iso-octyl phenyl ether (TX-100)—on the formation of
CdSe nanoparticles in aqueous solutions. The surfactant-stabilizing effect has been monitored using transmission electron
microscopy. Spectral properties of CdSe nanoparticles have been investigated; the structure of the long-wave edge of the fundamental
absorption band of CdSe nanoparticles has been analyzed. It has been shown that the variation of the synthesizing conditions
(stabilizer’s nature and concentration, CdSe concentration, etc.) allows the tailoring of the CdSe nanoparticle size in the
range of 8–17 nm. Lifshitz–Slyrzov–Wagner kinetic analysis has also been performed using the size variation according to ripening
temperature and time period. The differences in the stabilization ability of tested substances are discussed with respect
to their structure and possible mechanism of the surface interaction with the nanoparticles. The flexible surface chemistry
of the CdSe-micelles causes them to be water soluble and allows their further conjugation with protein molecules through electrostatic
attraction. The interaction between functionalized CdSe nanoparticles with protein molecules have been investigated using
fluorescence spectroscopy.
- Content Type Journal Article
- Category Research Paper
- DOI 10.1007/s11051-010-9890-9
- Authors
- S. K. Mehta, Panjab University Department of Chemistry and Centre of Advanced Studies in Chemistry Chandigarh 160 014 India
- Savita Chaudhary, Panjab University Department of Chemistry and Centre of Advanced Studies in Chemistry Chandigarh 160 014 India
- Sanjay Kumar, Panjab University Department of Chemistry and Centre of Advanced Studies in Chemistry Chandigarh 160 014 India
- Sukhjinder Singh, Panjab University Department of Chemistry and Centre of Advanced Studies in Chemistry Chandigarh 160 014 India
- Journal Journal of Nanoparticle Research
- Online ISSN 1572-896X
- Print ISSN 1388-0764
No comments:
Post a Comment