title: Silicon nanoparticle based fluorescent biological label via low temperature thermal degradation of chloroalkylsilane.
abstract: A simple low temperature colloid-chemical synthetic method is reported for size controlled synthesis of hydrophobic silicon nanoparticles in the 1-10 nm range. These silicon nanoparticles show size dependent tunable visible emission from blue to red with fluorescence quantum yield in the range of 6-13%. These silicon nanoparticles can be subjected to extensive surface chemistry without significant loss of their fluorescence properties. The as-synthesized red emitting nanoparticles have been transformed into water soluble functional nanoprobes of 18 nm hydrodynamic diameter and 5% fluorescence quantum yield and used as fluorescent biological labels.
authors.affiliation: Centre for Advanced Materials, Indian Association for the Cultivation of Science, Kolkata 700032, India.
authors.forename: Pradip
authors.initials: P
authors.lastname: Das
authors.forename: Arindam
authors.initials: A
authors.lastname: Saha
authors.forename: Amit Ranjan
authors.initials: AR
authors.lastname: Maity
authors.forename: Sekhar C
authors.initials: SC
authors.lastname: Ray
authors.forename: Nikhil R
authors.initials: NR
authors.lastname: Jana
mesh_terms: D005453:Fluorescence; D005456:Fluorescent Dyes / Q000737:chemistry*; D006843:Hydrocarbons, Chlorinated / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010316:Particle Size; D012825:Silicon / Q000737:chemistry*
chemical_list: D005456:Fluorescent Dyes; D006843:Hydrocarbons, Chlorinated; D012825:Silicon