Issue 36, 2016

Tunable optical properties of OH-functionalised graphene quantum dots

Abstract

Graphene oxide quantum dots (GO-QDs) have distinct optoelectronic properties for their application in bio-imaging, drug delivery and photovoltaics. Herein, the effect of OH functionalisation on the optical properties of GO-QDs is studied based on state-of-the-art theoretical simulations. Our calculations predict the effect of OH groups on ionisation potentials, light absorption and emission properties. The mechanism of fluorescence is analysed considering the role of geometry distortion and charge transfer. Moreover, selective functionalisation of positions with large electron–hole separation offers a strategy to tune the optical gap and photoluminescence properties. These results open up new opportunities for the design of GO-QDs for a wide range of applications.

Graphical abstract: Tunable optical properties of OH-functionalised graphene quantum dots

Supplementary files

Article information

Article type
Paper
Submitted
04 iyl 2016
Accepted
16 avq 2016
First published
16 avq 2016
This article is Open Access
Creative Commons BY-NC license

J. Mater. Chem. C, 2016,4, 8429-8438

Tunable optical properties of OH-functionalised graphene quantum dots

K. R. Geethalakshmi, T. Y. Ng and R. Crespo-Otero, J. Mater. Chem. C, 2016, 4, 8429 DOI: 10.1039/C6TC02785G

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements