• Corpus ID: 137200882

Synthesis, characterization, and bio-conjugation of silicon nanocrystal

  title={Synthesis, characterization, and bio-conjugation of silicon nanocrystal},
  author={Jonghoon Choi},
Title of Document: SYNTHESIS, CHARACTERIZATION, AND BIO-CONJUGATION OF SILICON NANOCRYSTAL Jonghoon Choi, M.S., 2006 Directed By: Associate Professor, Nam Sun Wang, Department of Chemical and Biomolecular Engineering Bulk silicon is unable to emit fluorescence because of its indirect band gap nature. However, it has been reported that nano-structured silicon can be fluorescent when properly excited. Silicon nanocrystals (SN) have gathered scientific attention not only because of their uncertain… 


Propionic-acid-terminated silicon nanoparticles : Synthesis and optical characterization
Photoinitiated hydrosilylation was used to attach acrylic acid to the surface of photoluminescent silicon nanoparticles, thereby producing water-dispersible, propionic-acid-terminated particles. From
Carboxyl functionalization of ultrasmall luminescent silicon nanoparticles through thermal hydrosilylation
Functionalization of ultrasmall semiconductor nanoparticles to develop new luminescent probes that are optically bright, stable in aqueous environments, and sized comparably to small organic
Nanocrystalline semiconductors: Synthesis, properties, and perspectives
The synthesis and study of so-called “nanoparticles”, particles with diameters in the range of 1−20 nm, has become a major interdisciplinary area of research over the past 10 years. Semiconductor
Optical and Electronic Properties of Si Nanoclusters Synthesized in Inverse Micelles
Highly crystalline, size-selected silicon (Si) nanocrystals in the size range 2-10 nm were grown in inverse micelles and their optical absorption and photoluminescence (PL) properties were studied.
Efficient surface grafting of luminescent silicon quantum dots by photoinitiated hydrosilylation.
High coverage grafting of organic molecules onto photoluminescent silicon nanoparticles was enabled by use of a modified etching process that produces a hydrogen-terminated surface on the nanoparticles with very little residual oxygen and by carefully excluding oxygen during the grafting process.
Organically capped silicon nanoparticles with blue photoluminescence prepared by hydrosilylation followed by oxidation.
Oxidation of yellow-emitting silicon nanoparticles with an organic monolayer grafted to their surface, using either UV irradiation in solution or heating in air, converted them to blue-emitted particles, demonstrating that it is the silicon nanocrystal, and not the organic component, that is essential to this process.
Silicon nanoparticles as a luminescent label to DNA.
A conjugation process is reported that allows labeling of Si nanoparticles to an oligonucleotide in aqueous solutions that contains a C6 linker between amide and phosphate groups and is dominated by two blue bands under 340 nm excitation.
Quantum dot bioconjugates for imaging, labelling and sensing
This review looks at current methods for preparing QD bioconjugates as well as presenting an overview of applications, and concludes that the potential of QDs in biology has just begun to be realized and new avenues will arise as the ability to manipulate these materials improves.
Three-dimensional binary superlattices of magnetic nanocrystals and semiconductor quantum dots
This study reports the self-assembly of PbSe semiconductor quantum dots and Fe2O3 magnetic nanocrystals into precisely ordered three-dimensional superlattices with potentially tunable optical and magnetic properties.
Influence of nanostructure size on the luminescence behavior of silicon nanoparticle thin films
We demonstrate the effect of particle size and quantum confinement on the luminescence properties of nanoscale silicon thin films. Thin films of agglomerated silicon nanoparticles are synthesized