Electron beam mediated synthesis of photoluminescent organosilicon nanoparticles in TX-100 micellar medium and their prospective applications
- Title
- Electron beam mediated synthesis of photoluminescent organosilicon nanoparticles in TX-100 micellar medium and their prospective applications
- Creator
- Guleria A.; Tomy A.; Baby C.M.; Gandhi V.V.; Kunwar A.; Debnath A.K.; Adhikari S.
- Description
- The inherent advantages of Silicon have made it as one of the most sought-after elements in the field of nanoscience and nanotechnology. Herein, we report an electron-beam induced formation of blue light emitting organosilicon nanoparticles (OSiNPs) in the micellar medium of Triton X-100 (TX-100). The profound role of the micellar medium can be realized from the enhanced colloidal stability as well as photoluminescence (PL) quantum efficiency (from ~9% to ~55%) of as synthesized OSiNPs. Mechanistic investigations revealed the crucial role of hydroxyl radical ([rad]OH) in the formation of OSiNPs. XPS and FTIR studies indicated the presence of siloxane/silicone and silica (SiO2) like units as the major constituents in the NPs. XRD pattern showed the amorphous nature of the NPs, while TEM studies revealed their aggregation. The hydrodynamic size of the NPs was determined to be ~24 nm. Interestingly, the NPs exhibited an excitation-wavelength-dependent PL behaviour, thereby indicating the presence of multiple emission centres (ECs). Detailed investigations based on steady-state as well as time-resolved PL measurements were conducted to analyse these ECs. In addition, pH and temperature-dependent studies were carried out to further substantiate these findings. Moreover, the experimental observations revealed their potential applications in the areas of thermosensing, fingerprinting and cell-imaging. Notably, the internalization of as prepared NPs within cells was evident from the bright fluorescence images obtained from the cytoplasmic region as compared to control cells. This observation also suggests the prospective application of these NPs for image guided drug delivery systems. 2021 Elsevier B.V.
- Source
- Journal of Molecular Liquids, Vol-334
- Date
- 2021-01-01
- Publisher
- Elsevier B.V.
- Subject
- Cell-imaging; Electron-beam; Micelles; Nanoparticles; Photoluminescence; Silicon
- Coverage
- Guleria A., Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India; Tomy A., Christ University, Bengaluru, 560029, India; Baby C.M., Christ University, Bengaluru, 560029, India; Gandhi V.V., Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India, Homi Bhabha National Institute, Trombay, 400094, Mumbai, India; Kunwar A., Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India; Debnath A.K., Technical Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India; Adhikari S., Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
- Rights
- Restricted Access
- Relation
- ISSN: 1677322; CODEN: JMLID
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Guleria A.; Tomy A.; Baby C.M.; Gandhi V.V.; Kunwar A.; Debnath A.K.; Adhikari S., “Electron beam mediated synthesis of photoluminescent organosilicon nanoparticles in TX-100 micellar medium and their prospective applications,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 26, 2025, https://archives.christuniversity.in/items/show/15779.