Special Issue "Silicon Nanoparticles: Synthesis and Application"
Deadline for manuscript submissions: 30 April 2019
Dr. Yimin Chao
School of Chemistry, University of East Anglia, Norwich NR4 7TJ, UK
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Interests: quantum dots; porous silicon; electrochemical etching; micelle template; solution growth; lithography template; ball milling; plasma synthesis; surface ligands; surface functionalization; energy conversion; solar cell; thermoelectrics; energy storage; battery anode; energetic bridge; biosensor; drug delivery; bioimaging; cancer targeting and diagnosis
Since the novel optical properties of porous silicon were discovered by Leigh Canham in the early 1990s, the research community has been carrying out intensive research on developing silicon quantum dots (SiQDs) and silicon nanoparticles (SiNPs) from classical porous silicon and from nanotechnology-based synthesis methods. For example, inverse micelle template formation, laser plasma synthesis, and lithography template methods are among typical bottom–up and top–down routes. During synthesis procedures, a critical issue is to prevent oxidation, which can be done by conjugation with functional groups on the surface.
The quantum confined optical and electronic properties render wide applications of SiQDs in biomedical imaging, drug delivery, and cancer targeting. The key step for such applications is to modify the surface with various functional ligands. Alkyl group capped SiQDs are among the earliest versions, but the surfaces are well protected from oxidation, which is still the best choice in terms of stability and the reliability of emission intensity. Amine-terminated SiQDs are acting as a platform for further functionalization. Recently-developed thiourea-functionalized SiQDs possess a strong ability to target epidermal growth factor receptors (EGFR) that are overexpressed in cancer cells. Other complex designs, such as encapsulations with drugs, provide vehicles for drug delivery and monitoring.
Silicon is the foundation for modern electronics and is still unreplaceable in the semiconductor industry, such as in information technology, artificial intelligence, and energy conversion and storage. Silicon nanostructures have been playing extraordinary roles in memory devices, thermoelectrics, solar energy conversion, and have been acting as powerful anodes in batteries and supercapacitors.
Nanotoxicity, reliability, stability, and reactivity of nanoparticles are important topics for environmentally-friendly synthesis and sustainable applications. The research field is advancing to new areas very rapidly.
It is my great pleasure to invite you to submit your manuscripts to this Special Issue. Research articles, communications, and reviews are all welcome.
Dr. Yimin Chao
Manuscript Submission Information
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- Porous silicon
- silicon quantum dots
- synthesis and functionalization
- energy and environment
- biomedical imaging
- drug delivery
- cancer targeting and diagnosis