Optical encoding of luminescent carbon nanodots in confined spaces

Evelyne Bartholomeeusen; Gert De Cremer; Koen Kennes; Ceri Hammond; Ive Hermans; Jiang-bo Lu; Dominique Schryvers; Pierre A. Jacobs; Maarten B. J. Roeffaers; Johan Hofkens; Bert F. Sels; Eduardo Coutino-Gonzalez

doi:10.1039/D1CC04777A

Optical encoding of luminescent carbon nanodots in confined spaces†

Evelyne Bartholomeeusen,^a Gert De Cremer,^b Koen Kennes,^c Ceri Hammond,

^d Ive Hermans,

^e Jiang-bo Lu,^fg Dominique Schryvers,^g Pierre A. Jacobs,^a Maarten B. J. Roeffaers,

^h Johan Hofkens,

^c Bert F. Sels

^a and Eduardo Coutino-Gonzalez

*ⁱ

Author affiliations

* Corresponding authors

^a Chem&Tech – Centre for Sustainable Catalysis and Engineering (CSCE), KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium

^b DSM Protective Materials, PO Box 1163, 6160BD Geleen, The Netherlands

^c Chem & Tech – Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium

^d Department of Chemical Engineering, Imperial College London, South Kensington, London, UK

^e Department of Chemistry & Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1101 University Av., Madison, WI 53706, USA

^f School of Physics and Information Technology, Shaanxi Normal University, Xi’an, P. R. China

^g EMAT, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium

^h Chem&Tech – Centre for Membrane Separations, Adsorption, Catalysis and Spectroscopy for Sustainable Solutions, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium

ⁱ Centro de Investigaciones en Óptica, A. C. Loma del Bosque 115, Colonia Lomas del Campestre, León, Guanajuato 37150, Mexico
E-mail: ecoutino@cio.mx

Abstract

Stable emissive carbon nanodots were generated in zeolite crystals using near infrared photon irradiation gradually converting the occluded organic template, originally used to synthesize the zeolite crystals, into discrete luminescent species consisting of nano-sized carbogenic fluorophores, as ascertained using Raman microscopy, and steady-state and time-resolved spectroscopic techniques. Photoactivation in a confocal laser fluorescence microscope allows 3D resolved writing of luminescent carbon nanodot patterns inside zeolites providing a cost-effective and non-toxic alternative to previously reported metal-based nanoclusters confined in zeolites, and opens up opportunities in bio-labelling and sensing applications.

This article is part of the themed collection: 2021 Emerging Investigators

Chemical Communications

Optical encoding of luminescent carbon nanodots in confined spaces†

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