Cationic Silicon Nanocrystals with Colloidal Stability, pH‐Independent Positive Surface Charge and Size Tunable Photoluminescence in the Near‐Infrared to Red Spectral Range

In this report, the synthesis of a novel class of cationic quaternary ammonium‐surface‐functionalized silicon nanocrystals (ncSi) using a novel and highly versatile terminal alkyl halide‐surface‐functionalized ncSi synthon is described. The distinctive features of these cationic ncSi include colloid...

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Autores principales: Chen, Kenneth K., Liao, Kristine, Casillas, Gilberto, Li, Yiying, Ozin, Geoffrey A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2016
Materias:
Full Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5066801/
https://www.ncbi.nlm.nih.gov/pubmed/27812459
http://dx.doi.org/10.1002/advs.201500263
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author Chen, Kenneth K.
Liao, Kristine
Casillas, Gilberto
Li, Yiying
Ozin, Geoffrey A.
author_facet Chen, Kenneth K.
Liao, Kristine
Casillas, Gilberto
Li, Yiying
Ozin, Geoffrey A.
author_sort Chen, Kenneth K.
collection PubMed
description In this report, the synthesis of a novel class of cationic quaternary ammonium‐surface‐functionalized silicon nanocrystals (ncSi) using a novel and highly versatile terminal alkyl halide‐surface‐functionalized ncSi synthon is described. The distinctive features of these cationic ncSi include colloidal stability, pH‐independent positive surface charge, and size‐tunable photoluminescence (PL) in the biologically relevant near‐infrared‐to‐red spectral region. These cationic ncSi are characterized via a combination of high‐resolution scanning transmission electron microscopy with energy‐dispersive X‐ray analysis, Fourier transform infrared, X‐ray photoelectron, and photoluminescence spectroscopies, and zeta potential measurements.
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spelling pubmed-50668012016-11-01 Cationic Silicon Nanocrystals with Colloidal Stability, pH‐Independent Positive Surface Charge and Size Tunable Photoluminescence in the Near‐Infrared to Red Spectral Range Chen, Kenneth K. Liao, Kristine Casillas, Gilberto Li, Yiying Ozin, Geoffrey A. Adv Sci (Weinh) Full Papers In this report, the synthesis of a novel class of cationic quaternary ammonium‐surface‐functionalized silicon nanocrystals (ncSi) using a novel and highly versatile terminal alkyl halide‐surface‐functionalized ncSi synthon is described. The distinctive features of these cationic ncSi include colloidal stability, pH‐independent positive surface charge, and size‐tunable photoluminescence (PL) in the biologically relevant near‐infrared‐to‐red spectral region. These cationic ncSi are characterized via a combination of high‐resolution scanning transmission electron microscopy with energy‐dispersive X‐ray analysis, Fourier transform infrared, X‐ray photoelectron, and photoluminescence spectroscopies, and zeta potential measurements. John Wiley and Sons Inc. 2016-01-21 /pmc/articles/PMC5066801/ /pubmed/27812459 http://dx.doi.org/10.1002/advs.201500263 Text en © 2016 The Authors. Published by WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Full Papers
Chen, Kenneth K.
Liao, Kristine
Casillas, Gilberto
Li, Yiying
Ozin, Geoffrey A.
Cationic Silicon Nanocrystals with Colloidal Stability, pH‐Independent Positive Surface Charge and Size Tunable Photoluminescence in the Near‐Infrared to Red Spectral Range
title Cationic Silicon Nanocrystals with Colloidal Stability, pH‐Independent Positive Surface Charge and Size Tunable Photoluminescence in the Near‐Infrared to Red Spectral Range
title_full Cationic Silicon Nanocrystals with Colloidal Stability, pH‐Independent Positive Surface Charge and Size Tunable Photoluminescence in the Near‐Infrared to Red Spectral Range
title_fullStr Cationic Silicon Nanocrystals with Colloidal Stability, pH‐Independent Positive Surface Charge and Size Tunable Photoluminescence in the Near‐Infrared to Red Spectral Range
title_full_unstemmed Cationic Silicon Nanocrystals with Colloidal Stability, pH‐Independent Positive Surface Charge and Size Tunable Photoluminescence in the Near‐Infrared to Red Spectral Range
title_short Cationic Silicon Nanocrystals with Colloidal Stability, pH‐Independent Positive Surface Charge and Size Tunable Photoluminescence in the Near‐Infrared to Red Spectral Range
title_sort cationic silicon nanocrystals with colloidal stability, ph‐independent positive surface charge and size tunable photoluminescence in the near‐infrared to red spectral range
topic Full Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5066801/
https://www.ncbi.nlm.nih.gov/pubmed/27812459
http://dx.doi.org/10.1002/advs.201500263
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