Symmetrical azine colorimetric and fluorometric turn-off chemosensor for formaldehyde detection

Azine derivative 6,6’-((1E,1’E)-hydrazine-1,2-diylidenebis(methanyly-lidene))bis(3,4-dimethoxy-aniline) CHA has been synthesized by condensation of 6-nitroveratraldehyde with malononitrile followed by reduction using 10% Pd/C and hydrazine hydrate. In the presence of formaldehyde, CHA chemosensor in...

Full description

Bibliographic Details
Main Authors:	Nurul Hidayah, Purwono, Bambang, Pranowo, Harno Dwi
Format:	Article
Language:	English
Published:	Penerbit Universiti Kebangsaan Malaysia 2019
Online Access:	http://journalarticle.ukm.my/14380/ http://journalarticle.ukm.my/14380/ http://journalarticle.ukm.my/14380/1/11%20Nurul%20Hidayah.pdf

id	ukm-14380
recordtype	eprints
spelling	ukm-143802020-03-10T02:30:23Z http://journalarticle.ukm.my/14380/ Symmetrical azine colorimetric and fluorometric turn-off chemosensor for formaldehyde detection Nurul Hidayah, Purwono, Bambang Pranowo, Harno Dwi Azine derivative 6,6’-((1E,1’E)-hydrazine-1,2-diylidenebis(methanyly-lidene))bis(3,4-dimethoxy-aniline) CHA has been synthesized by condensation of 6-nitroveratraldehyde with malononitrile followed by reduction using 10% Pd/C and hydrazine hydrate. In the presence of formaldehyde, CHA chemosensor in ethanol showed a yellow-to-red color change observable by the naked eyes and ‘turn off’ type fluorescence quenching in ethanol. This phenomenon was confirmed by UV-Vis, fluorescence and 1H NMR spectroscopy. The CHA spectra in ethanol was shifted from 412 to 509 nm after addition of formaldehyde. Fluorescence intensity of CHA gradually decreased with the increase of formaldehyde concentrations. Furthermore, paper strips loaded-CHA were fabricated and served to detect formaldehyde qualitatively. The detection limit of the CHA probe to formaldehyde is 0.2 M. Penerbit Universiti Kebangsaan Malaysia 2019-10 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/14380/1/11%20Nurul%20Hidayah.pdf Nurul Hidayah, and Purwono, Bambang and Pranowo, Harno Dwi (2019) Symmetrical azine colorimetric and fluorometric turn-off chemosensor for formaldehyde detection. Sains Malaysiana, 48 (10). pp. 2161-2167. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid48bil10_2019/KandunganJilid48Bil10_2019.htm
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	Azine derivative 6,6’-((1E,1’E)-hydrazine-1,2-diylidenebis(methanyly-lidene))bis(3,4-dimethoxy-aniline) CHA has been synthesized by condensation of 6-nitroveratraldehyde with malononitrile followed by reduction using 10% Pd/C and hydrazine hydrate. In the presence of formaldehyde, CHA chemosensor in ethanol showed a yellow-to-red color change observable by the naked eyes and ‘turn off’ type fluorescence quenching in ethanol. This phenomenon was confirmed by UV-Vis, fluorescence and 1H NMR spectroscopy. The CHA spectra in ethanol was shifted from 412 to 509 nm after addition of formaldehyde. Fluorescence intensity of CHA gradually decreased with the increase of formaldehyde concentrations. Furthermore, paper strips loaded-CHA were fabricated and served to detect formaldehyde qualitatively. The detection limit of the CHA probe to formaldehyde is 0.2 M.
format	Article
author	Nurul Hidayah, Purwono, Bambang Pranowo, Harno Dwi
spellingShingle	Nurul Hidayah, Purwono, Bambang Pranowo, Harno Dwi Symmetrical azine colorimetric and fluorometric turn-off chemosensor for formaldehyde detection
author_facet	Nurul Hidayah, Purwono, Bambang Pranowo, Harno Dwi
author_sort	Nurul Hidayah,
title	Symmetrical azine colorimetric and fluorometric turn-off chemosensor for formaldehyde detection
title_short	Symmetrical azine colorimetric and fluorometric turn-off chemosensor for formaldehyde detection
title_full	Symmetrical azine colorimetric and fluorometric turn-off chemosensor for formaldehyde detection
title_fullStr	Symmetrical azine colorimetric and fluorometric turn-off chemosensor for formaldehyde detection
title_full_unstemmed	Symmetrical azine colorimetric and fluorometric turn-off chemosensor for formaldehyde detection
title_sort	symmetrical azine colorimetric and fluorometric turn-off chemosensor for formaldehyde detection
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2019
url	http://journalarticle.ukm.my/14380/ http://journalarticle.ukm.my/14380/ http://journalarticle.ukm.my/14380/1/11%20Nurul%20Hidayah.pdf
first_indexed	2023-09-18T20:06:57Z
last_indexed	2023-09-18T20:06:57Z
_version_	1777407222234480640

Symmetrical azine colorimetric and fluorometric turn-off chemosensor for formaldehyde detection

Similar Items