Preparation of Quantum Dot-Embedded Photonic Crystal Hydrogel and Its Application as Fluorescence Sensor for the Detection of Nitrite

The development of fluorescence sensing platforms with excellent photoluminescence capabilities is of great importance for their further application. In this work, a photonic crystal structure was successfully applied to enhance the luminescence performance of fluorescent hydrogel, and the applicati...

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Autores principales:	Rongzhen Li, Lian Li, Bin Wang, Liping Yu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	fluorescent hydrogel quantum dots photonic crystal sensor Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/e7ce1bffbd734f5d9e99293bf82282c4
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spelling	oai:doaj.org-article:e7ce1bffbd734f5d9e99293bf82282c42021-11-25T18:32:39ZPreparation of Quantum Dot-Embedded Photonic Crystal Hydrogel and Its Application as Fluorescence Sensor for the Detection of Nitrite10.3390/nano111131262079-4991https://doaj.org/article/e7ce1bffbd734f5d9e99293bf82282c42021-11-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/3126https://doaj.org/toc/2079-4991The development of fluorescence sensing platforms with excellent photoluminescence capabilities is of great importance for their further application. In this work, a photonic crystal structure was successfully applied to enhance the luminescence performance of fluorescent hydrogel, and the application of the obtained hydrogel as a fluorescence sensor was explored. A polystyrene photonic crystal template was constructed via vertical deposition self-assembly; then, the precursor solution containing polyethylenimine-capped CdS quantum dots (PEI-CdS QDs) and monomers filled in the gap of the template. After the polymerization process, the desired hydrogel was obtained. PEI-CdS QDs endowed the hydrogel with its fluorescence property, while interestingly, the photonic crystal structure showed a significant enhancement effect on the fluorescence-emission capability. The mechanism of this phenomenon was revealed. Moreover, this hydrogel could be used as a reusable fluorescence sensor for the detection of nitrite in water with good selectivity. The limit of detection was determined to be 0.25 μmol/L, which is much lower than the maximum limit for nitrite in drinking water.Rongzhen LiLian LiBin WangLiping YuMDPI AGarticlefluorescent hydrogelquantum dotsphotonic crystalsensorChemistryQD1-999ENNanomaterials, Vol 11, Iss 3126, p 3126 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	fluorescent hydrogel quantum dots photonic crystal sensor Chemistry QD1-999
spellingShingle	fluorescent hydrogel quantum dots photonic crystal sensor Chemistry QD1-999 Rongzhen Li Lian Li Bin Wang Liping Yu Preparation of Quantum Dot-Embedded Photonic Crystal Hydrogel and Its Application as Fluorescence Sensor for the Detection of Nitrite
description	The development of fluorescence sensing platforms with excellent photoluminescence capabilities is of great importance for their further application. In this work, a photonic crystal structure was successfully applied to enhance the luminescence performance of fluorescent hydrogel, and the application of the obtained hydrogel as a fluorescence sensor was explored. A polystyrene photonic crystal template was constructed via vertical deposition self-assembly; then, the precursor solution containing polyethylenimine-capped CdS quantum dots (PEI-CdS QDs) and monomers filled in the gap of the template. After the polymerization process, the desired hydrogel was obtained. PEI-CdS QDs endowed the hydrogel with its fluorescence property, while interestingly, the photonic crystal structure showed a significant enhancement effect on the fluorescence-emission capability. The mechanism of this phenomenon was revealed. Moreover, this hydrogel could be used as a reusable fluorescence sensor for the detection of nitrite in water with good selectivity. The limit of detection was determined to be 0.25 μmol/L, which is much lower than the maximum limit for nitrite in drinking water.
format	article
author	Rongzhen Li Lian Li Bin Wang Liping Yu
author_facet	Rongzhen Li Lian Li Bin Wang Liping Yu
author_sort	Rongzhen Li
title	Preparation of Quantum Dot-Embedded Photonic Crystal Hydrogel and Its Application as Fluorescence Sensor for the Detection of Nitrite
title_short	Preparation of Quantum Dot-Embedded Photonic Crystal Hydrogel and Its Application as Fluorescence Sensor for the Detection of Nitrite
title_full	Preparation of Quantum Dot-Embedded Photonic Crystal Hydrogel and Its Application as Fluorescence Sensor for the Detection of Nitrite
title_fullStr	Preparation of Quantum Dot-Embedded Photonic Crystal Hydrogel and Its Application as Fluorescence Sensor for the Detection of Nitrite
title_full_unstemmed	Preparation of Quantum Dot-Embedded Photonic Crystal Hydrogel and Its Application as Fluorescence Sensor for the Detection of Nitrite
title_sort	preparation of quantum dot-embedded photonic crystal hydrogel and its application as fluorescence sensor for the detection of nitrite
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e7ce1bffbd734f5d9e99293bf82282c4
work_keys_str_mv	AT rongzhenli preparationofquantumdotembeddedphotoniccrystalhydrogelanditsapplicationasfluorescencesensorforthedetectionofnitrite AT lianli preparationofquantumdotembeddedphotoniccrystalhydrogelanditsapplicationasfluorescencesensorforthedetectionofnitrite AT binwang preparationofquantumdotembeddedphotoniccrystalhydrogelanditsapplicationasfluorescencesensorforthedetectionofnitrite AT lipingyu preparationofquantumdotembeddedphotoniccrystalhydrogelanditsapplicationasfluorescencesensorforthedetectionofnitrite
_version_	1718411051651825664

Preparation of Quantum Dot-Embedded Photonic Crystal Hydrogel and Its Application as Fluorescence Sensor for the Detection of Nitrite

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