Optical properties of amorphous organo-modified silica nanoparticles produced via co-condensation method
Source abstract
Abstract
Abstract Structural defects in amorphous organo-modified silica nanoparticle have been studied via optical absorption and photoluminescence. The defect center, E′, oxygen defect center (ODCs), self-trapped exciton, OH-related surface defect, hydrogen-related species and carbon-related species were found in the amino-functionalized modified silica. These interesting emitting surface centers were observed in the range of vacuum ultraviolet (VUV), UV–vis and near-IR. Raman results were also demonstrated transverse- and longitudinal-optical pairs due to the surface defect-related optical properties.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Glass properties and applications · Photonic Crystals and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (35)
Show source-provided references
1. Low temperature investigation of the blue emission in mesoporous silica10.1016/j.msec.2005.07.009 ↗
2. Photoluminescence properties of silica monoliths codoped with terbium and germanium10.1016/j.matlet.2007.10.047 ↗
3. Dense electronic excitation induced defects in fused silica10.1088/0022-3727/36/24/010 ↗
4. Enhanced blue photoluminescence from SiCl4-treated nanometer-sized silica particles10.1016/j.jnoncrysol.2006.10.036 ↗
5. Infrared photoluminescence of preexisting or irradiation-induced interstitial oxygen molecules in glassy SiO2 and a-quartz10.1103/PhysRevB.58.14296 ↗
6. Photoluminescence of zinc oxide supported on submicron silica particles10.1016/j.msec.2005.06.019 ↗
7. Optically active oxygen-deficiency-related centers in amorphous silicon dioxide10.1016/S0022-3093(98)00720-0 ↗
8. Direct synthesis of amino-functionalized monodispersed mesoporous silica spheres and their catalytic activity for nitroaldol condensation10.1016/j.molcata.2007.11.012 ↗
9. Synthesis of organo-functionalized nanosilica via a co-condensation modification using γ-aminopropyltriethoxysilane (APTES)10.1016/j.ceramint.2008.10.028 ↗
10. Synthesis of silica nanoparticles by modified sol–gel process: the effect of mixing modes of the reactants and drying techniques10.1007/s10971-009-1958-6 ↗
11. Microstructural characterization of Ni nanoparticles prepared by anodic arc plasma10.1016/j.matchar.2006.01.004 ↗
12. Two-photon-excited luminescence and defect formation in SiO2 nanoparticles induced by 6.4-eV ArF laser light10.1103/PhysRevB.62.4733 ↗
13. Sol–gel synthesis and photoluminescence of AlP nanocrystals embedded in silica glasses10.1016/j.optmat.2005.11.029 ↗
14. Optical studies of self-trapped excitons in SiO210.1088/0022-3719/21/26/017 ↗
15. Intense ultraviolet and green photoluminescence from sol–gel derived silica containing hydrogenated carbon10.1088/0953-8984/14/45/328 ↗
16. The photoluminescence from hydrogen-related species in composites of SiO2 nanoparticles10.1063/1.124510 ↗
17. Time-resolved photoluminescence study of silica nanoparticles as compared to bulk type-III fused silica10.1103/PhysRevB.66.035404 ↗
18. Formation and photoluminescence characterization of transparent silica glass prepared by solid-phase reaction of nanometer-sized silica particles10.1021/jp072312v ↗
19. Photoluminescence characterization of sol–gel prepared low density silica samples10.1016/j.jnoncrysol.2006.10.022 ↗
20. Photoluminescence of oxygen-deficient-type defects in γ-irradiated silica glass10.1016/j.jnoncrysol.2006.08.018 ↗
21. Photoluminescence and growth mechanism of amorphous silica nanowires by vapor phase transport10.1016/j.physe.2005.12.159 ↗
22. A new intrinsic defect in amorphous SiO2: twofold coordinated silicon10.1016/0038-1098(84)90290-4 ↗
23. Correlation of the 5.0- and 7.6-eV absorption bands in SiO2 with oxygen vacancy10.1103/PhysRevB.39.1337 ↗
24. Optical properties and structure of defects in silica glass10.2109/jcersj.99.923 ↗
25. Hydrogenation of the silanone groups (Si–O)2SiO. Experimental and quantum-chemical studies10.1007/BF01457762 ↗
26. Mechanism of intrinsic Si E′-center photogeneration in high-purity silica10.1103/PhysRevLett.61.444 ↗
27. Optical absorption and nonradiative decay mechanism of E′ center in silica10.1103/PhysRevLett.81.377 ↗
28. First-principles analysis of the Raman spectrum of vitreous silica: comparison with the vibrational density of states10.1088/0953-8984/15/16/304 ↗
29. Raman investigation of surface OH-species in porous silica10.1021/jp036691d ↗
30. Surface hydroxyls in porous silica: a Raman spectroscopy study10.1016/j.msec.2003.09.125 ↗
31. Metal-decorated silica nanowires: an active surface-enhanced Raman substrate for cancer biomarker detection10.1021/jp077698o ↗
32. Tin doped silica by sol–gel method: doping effects on the SiO2 Raman spectrum10.1016/S0038-1098(98)00535-3 ↗
33. Shape-selective Raman scattering from surface phonon modes in aggregates of amorphous SiO2 nanoparticles10.1063/1.365667 ↗
34. Planar rings in vitreous silica10.1016/0022-3093(82)90108-9 ↗
35. Structural model of Raman “defect” bands of vitreous silica10.1103/PhysRevB.35.6409 ↗