Influence of chemical treatment and interaction with matrix on room temperature phosphorescence of carbon dots

Irina A Arefina; Daria V Erokhina; Elena V Ushakova

doi:10.1088/1361-6528/ad50e0

Influence of chemical treatment and interaction with matrix on room temperature phosphorescence of carbon dots

Irina A Arefina, Daria V Erokhina, Elena V Ushakova^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

2 Citations (Scopus)

Abstract

In this work, composite materials were formed based on various matrices (polymer and porous cellulose matrix) and carbon dots (CDs) with intense room-temperature phosphorescence (RTP). The effect of post-synthesis chemical treatment with citric acid or urea on the optical properties of composites was studied: the increase in carboxy and carbonyl groups led to an increase of RTP signals that could be seen with the naked eye over several seconds. The fabricated composites demonstrated good stability and reversibility of RTP signals by mild heating. Based on the developed CDs, luminescent inks were used for a simple demonstration of the data encryption on paper. © 2024 IOP Publishing Ltd.

Original language	English
Article number	365601
Journal	Nanotechnology
Volume	35
Issue number	36
Online published	20 Jun 2024
DOIs	https://doi.org/10.1088/1361-6528/ad50e0
Publication status	Published - 2 Sept 2024

Funding

This work was supported by Priority 2030 Federal Academic Leadership Program. The authors express their gratitude to the ITMO University Core Facility Center ‘Nanotechnologies’.

Research Keywords

carbon dots
phosphorescence
polymers
surface modification

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abstract = "In this work, composite materials were formed based on various matrices (polymer and porous cellulose matrix) and carbon dots (CDs) with intense room-temperature phosphorescence (RTP). The effect of post-synthesis chemical treatment with citric acid or urea on the optical properties of composites was studied: the increase in carboxy and carbonyl groups led to an increase of RTP signals that could be seen with the naked eye over several seconds. The fabricated composites demonstrated good stability and reversibility of RTP signals by mild heating. Based on the developed CDs, luminescent inks were used for a simple demonstration of the data encryption on paper. {\textcopyright} 2024 IOP Publishing Ltd.",

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T1 - Influence of chemical treatment and interaction with matrix on room temperature phosphorescence of carbon dots

AU - Arefina, Irina A

AU - Erokhina, Daria V

AU - Ushakova, Elena V

PY - 2024/9/2

Y1 - 2024/9/2

N2 - In this work, composite materials were formed based on various matrices (polymer and porous cellulose matrix) and carbon dots (CDs) with intense room-temperature phosphorescence (RTP). The effect of post-synthesis chemical treatment with citric acid or urea on the optical properties of composites was studied: the increase in carboxy and carbonyl groups led to an increase of RTP signals that could be seen with the naked eye over several seconds. The fabricated composites demonstrated good stability and reversibility of RTP signals by mild heating. Based on the developed CDs, luminescent inks were used for a simple demonstration of the data encryption on paper. © 2024 IOP Publishing Ltd.

AB - In this work, composite materials were formed based on various matrices (polymer and porous cellulose matrix) and carbon dots (CDs) with intense room-temperature phosphorescence (RTP). The effect of post-synthesis chemical treatment with citric acid or urea on the optical properties of composites was studied: the increase in carboxy and carbonyl groups led to an increase of RTP signals that could be seen with the naked eye over several seconds. The fabricated composites demonstrated good stability and reversibility of RTP signals by mild heating. Based on the developed CDs, luminescent inks were used for a simple demonstration of the data encryption on paper. © 2024 IOP Publishing Ltd.

KW - carbon dots

KW - phosphorescence

KW - polymers

KW - surface modification

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U2 - 10.1088/1361-6528/ad50e0

DO - 10.1088/1361-6528/ad50e0

M3 - RGC 21 - Publication in refereed journal

C2 - 38806016

SN - 0957-4484

VL - 35

JO - Nanotechnology

JF - Nanotechnology

IS - 36

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ER -

Influence of chemical treatment and interaction with matrix on room temperature phosphorescence of carbon dots

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