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Water-dispersible near-infrared luminescent silicon nanocrystals –immobilization on substrate

Published online by Cambridge University Press:  07 November 2016

Takashi Kanno ,
Shinya Kano Open the ORCID record for Shinya Kano [Opens in a new window] ,
Hiroshi Sugimoto ,
Yasuhiro Tada  and
Minoru Fujii
Takashi Kanno
Affiliation:
Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, Rokkodai, Nada, Kobe 657-8501, Japan
Shinya Kano*
Affiliation:
Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, Rokkodai, Nada, Kobe 657-8501, Japan
Hiroshi Sugimoto
Affiliation:
Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, Rokkodai, Nada, Kobe 657-8501, Japan
Yasuhiro Tada
Affiliation:
Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, Rokkodai, Nada, Kobe 657-8501, Japan
Minoru Fujii*
Affiliation:
Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, Rokkodai, Nada, Kobe 657-8501, Japan
*
Address all correspondence to S. Kano at kano@eedept.kobe-u.ac.jp and M. Fujii at fujii@eedept.kobe-u.ac.jp
Address all correspondence to S. Kano at kano@eedept.kobe-u.ac.jp and M. Fujii at fujii@eedept.kobe-u.ac.jp
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Abstract

We demonstrate formation of allylamine (AAm) and acrylic acid (AAc)-functionalized colloidal silicon nanocrystals (Si NCs) exhibiting near-infrared (NIR) luminescence and immobilization of the NCs on substrates via covalent bond. The surface functionalization is confirmed by IR absorption spectroscopy and specific binding property of functionalized NCs. Atomic force microscope observations reveal that AAm- and AAc-functionalized Si NCs are chemically immobilized on self-assembled monolayers via covalent bonds. The functionalized Si NCs exhibit photoluminescence in a NIR region (1.5–1.6 eV), which is not significantly affected by the functionalization.

Type
Research Letters
Information
MRS Communications , Volume 6 , Issue 4 , December 2016 , pp. 429 - 436
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Copyright
Copyright © Materials Research Society 2016 

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