Related Experiment Video
Updated: May 9, 2026
09:43
Preparation of Silica Nanoparticles Through Microwave-assisted Acid-catalysis
Published on: December 16, 2013
Silica cross-linked micelles loading with silicon nanoparticles: preparation and characterization
Guo-Hui Pan1, Alexandre Barras, Luc Boussekey
1Institut de Recherche Interdisciplinaire, CNRS USR 3078, Université Lille 1, Parc de la Haute Borne, 50 avenue de Halley, 59658 Villeneuve d'Ascq, France. guohui.pan@aliyun.com
ACS Applied Materials & Interfaces
|July 13, 2013
Summary
New silicon nanoparticles encapsulated in pluronic F127 micelles offer bright photoluminescence for biological imaging. These stable nanoparticles show potential for applications in bioimaging, though solvent choice is critical for luminescence studies.
Area of Science:
- Materials Science
- Nanotechnology
- Biomedical Engineering
Background:
- Silicon nanoparticles (SiNPs) are promising for bioimaging due to their tunable optical properties.
- Developing stable, luminescent SiNPs in aqueous media remains a challenge for biological applications.
Purpose of the Study:
- To synthesize and characterize novel luminescent silicon-based nanoparticles in a stable, aqueous-compatible format.
- To evaluate the photoluminescence properties and stability of these nanoparticles for potential bioimaging applications.
Main Methods:
- Synthesis of decyl-capped SiNPs (decyl-SiNPs) via photochemical hydrosilylation.
- Encapsulation of decyl-SiNPs within silica cross-linked pluronic F127 (PF127) micelles.
- Characterization of photoluminescence (PL), quantum yield, hydrodynamic size, and stability in various conditions.
Main Results:
- Successfully synthesized stable, luminescent SiNPs within PF127 micelles in aqueous solution.
- Achieved bright photoluminescence peaking at ~2.0 eV with a quantum yield of ~3.8%, suitable for biological imaging.
- Demonstrated excellent colloidal stability against salt and temperature variations, but susceptibility to basic solutions (pH > 9).
- Identified solvent interference (e.g., chloroform) and specific PF127 blocks (PEO) affecting PL.
Conclusions:
- Developed a new class of luminescent, stable silicon-based nanoparticles for bioimaging.
- Highlighted the importance of considering solvent and formulation components when studying SiNP luminescence.
- The developed nanoparticles show promise for in vivo and in vitro bioimaging applications.
