Issue 32, 2012
From the journal:

RSC Advances

Fluorescent carbon dots obtained from chitosan gel†

Devasish Chowdhury,*a   Neelam Gogoia  and  Gitanjali Majumdarb  

* Corresponding authors

a Physical Sciences Division, Polymer Unit, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Garchuk, Guwahati, India
E-mail: devasishc@gmail.com
Fax: +91 361 2279909
Tel: +91 361 2912073

b Department of Chemistry, Assam Engineering College, Jalukbari, Guwahati, India
E-mail: gitanjalic@gmail.com
Fax: +91 361 2572215
Tel: +91 3612570550

Abstract

In this communication we report the preparation of fluorescent carbon dots (CDs) from chitosan gel. We also studied the photoluminescent (PL) properties of CDs prepared in different pH conditions. While CDs prepared at pH 3 give an intense sharp blue fluorescence, those prepared at pH 1 or 5 give a broad emission. In addition, we also investigated CDs prepared from chitosan/Ag and chitosan/Au nanocomposites. It was observed that although the emission was broad and less well defined, there was an enhancement of PL emission for the CDs prepared from chitosan/Ag or chitosan/Au nanocomposites.

Graphical abstract: Fluorescent carbon dots obtained from chitosan gel

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Article information

DOI
https://doi.org/10.1039/C2RA21705H
Article type
Communication
Submitted
06 Aug 2012
Accepted
15 Oct 2012
First published
18 Oct 2012

RSC Adv., 2012,2, 12156-12159

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Fluorescent carbon dots obtained from chitosan gel

D. Chowdhury, N. Gogoi and G. Majumdar, RSC Adv., 2012, 2, 12156 DOI: 10.1039/C2RA21705H

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