Fabrication and luminescence of monolayered boron nitride quantum dots.

Monolayered boron nitride (BN) quantum dots (QDs; lateral size ≈10 nm) are fabricated using a novel method. Unlike monolayered BN sheets, these BN QDs exhibit blue-green luminescence due to defects formed during preparation. This optical behavior adds significant functionality to a material that is already receiving much attention. It is further shown that the QDs are nontoxic to biological cells and well suited to bio-imaging.

[1]  M. McConnell,et al.  Near Infrared Imaging and Photothermal Ablation of Vascular Inflammation Using Single-Walled Carbon Nanotubes , 2012, Journal of the American Heart Association.

[2]  H. Dai,et al.  Chirality enriched (12,1) and (11,3) single-walled carbon nanotubes for biological imaging. , 2012, Journal of the American Chemical Society.

[3]  Liangxu Lin,et al.  Creating high yield water soluble luminescent graphene quantum dots via exfoliating and disintegrating carbon nanotubes and graphite flakes. , 2012, Chemical communications.

[4]  B. Dubertret,et al.  Colloidal nanoplatelets with two-dimensional electronic structure. , 2011, Nature materials.

[5]  B. Sumpter,et al.  Boron nitride nanoribbons become metallic. , 2011, Nano letters.

[6]  Tiffany V. Williams,et al.  Aqueous Dispersions of Few-Layered and Monolayered Hexagonal Boron Nitride Nanosheets from Sonication-Assisted Hydrolysis: Critical Role of Water , 2011 .

[7]  Jing Kong,et al.  Synthesis of few-layer hexagonal boron nitride thin film by chemical vapor deposition. , 2010, Nano letters.

[8]  K. Novoselov,et al.  Hunting for monolayer boron nitride: optical and Raman signatures. , 2010, Small.

[9]  Jun Lou,et al.  Large scale growth and characterization of atomic hexagonal boron nitride layers. , 2010, Nano letters.

[10]  Minghong Wu,et al.  Hydrothermal Route for Cutting Graphene Sheets into Blue‐Luminescent Graphene Quantum Dots , 2010, Advanced materials.

[11]  C. Zhi,et al.  Chemically activated boron nitride nanotubes. , 2009, Chemistry, an Asian journal.

[12]  C. Zhi,et al.  Large‐Scale Fabrication of Boron Nitride Nanosheets and Their Utilization in Polymeric Composites with Improved Thermal and Mechanical Properties , 2009 .

[13]  C. Jin,et al.  Fabrication of a freestanding boron nitride single layer and its defect assignments. , 2009, Physical review letters.

[14]  Y B Li,et al.  Experimental and theoretical studies suggesting the possibility of metallic boron nitride edges in porous nanourchins. , 2008, Nano letters.

[15]  C. Zhi,et al.  Boron-oxygen luminescence centres in boron-nitrogen systems. , 2007, Chemical communications.

[16]  Dmitri Golberg,et al.  Boron Nitride Nanotubes , 2007 .

[17]  Si-Dian Li,et al.  Vibrationally resolved photoelectron spectroscopy of BO- and BO2-: a joint experimental and theoretical study. , 2007, The journal of physical chemistry. A.

[18]  S. Reich,et al.  Raman spectroscopy of single-wall boron nitride nanotubes. , 2006, Nano letters.

[19]  Yadong Yin,et al.  Colloidal nanocrystal synthesis and the organic–inorganic interface , 2005, Nature.

[20]  Liberato Manna,et al.  Controlled growth of tetrapod-branched inorganic nanocrystals , 2003, Nature materials.

[21]  C. Zhi,et al.  Raman characterization of boron carbonitride nanotubes , 2002 .

[22]  Weidong Yang,et al.  Shape control of CdSe nanocrystals , 2000, Nature.

[23]  M. Lorenz,et al.  Neon matrix spectra and isotopically dependent fluorescence quantum yields of BO2 , 1997 .

[24]  J. V. Ortiz.  Electron propagator theory of BO2 and BO-2 electronic structure , 1993 .

[25]  L. Brus,et al.  Quantum crystallites and nonlinear optics , 1991 .

[26]  A. I. Boldyrev,et al.  The upper ionization potentials of F−, LiF−2, BeF−3, BO−2, AlO−2, and NO−3 ions calculated by Green’s function method , 1990 .

[27]  R. Paine,et al.  Synthetic routes to boron nitride , 1990 .

[28]  A. Zunger,et al.  Point defects in hexagonal boron nitride. I. EPR, thermoluminescence, and thermally-stimulated-current measurements , 1975 .

[29]  A. Zunger,et al.  Point defects in hexagonal boron nitride. II. Theoretical studies , 1975 .

[30]  A. G. Freeman,et al.  Evidence for the formation of boron nitride-alkali metal intercalation compounds , 1969 .

[31]  B. Gu,et al.  Edge stability of boron nitride nanoribbons and its application in designing hybrid BNC structures , 2011, Nano Research.