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...
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| Language: | en |
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Penerbit Universiti Kebangsaan Malaysia
2019
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| Online Access: | http://journalarticle.ukm.my/14380/1/11%20Nurul%20Hidayah.pdf http://journalarticle.ukm.my/14380/ http://www.ukm.my/jsm/malay_journals/jilid48bil10_2019/KandunganJilid48Bil10_2019.htm |
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| _version_ | 1834432396579045376 |
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| author | Nurul Hidayah, Purwono, Bambang Pranowo, Harno Dwi |
| author_facet | Nurul Hidayah, Purwono, Bambang Pranowo, Harno Dwi |
| author_sort | Nurul Hidayah, |
| building | Tun Sri Lanang Library |
| collection | Institutional Repository |
| content_provider | Universiti Kebangsaan Malaysia |
| content_source | UKM Journal Article Repository |
| continent | Asia |
| country | Malaysia |
| 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 |
| id | my-ukm.journal.14380 |
| institution | Universiti Kebangsaan Malaysia |
| language | en |
| publishDate | 2019 |
| publisher | Penerbit Universiti Kebangsaan Malaysia |
| record_format | eprints |
| spelling | my-ukm.journal.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 |
| spellingShingle | Nurul Hidayah, Purwono, Bambang Pranowo, Harno Dwi Symmetrical azine colorimetric and fluorometric turn-off chemosensor for formaldehyde detection |
| title | 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_short | Symmetrical azine colorimetric and fluorometric turn-off chemosensor for formaldehyde detection |
| title_sort | symmetrical azine colorimetric and fluorometric turn-off chemosensor for formaldehyde detection |
| url | http://journalarticle.ukm.my/14380/1/11%20Nurul%20Hidayah.pdf http://journalarticle.ukm.my/14380/ http://www.ukm.my/jsm/malay_journals/jilid48bil10_2019/KandunganJilid48Bil10_2019.htm |
| url_provider | http://journalarticle.ukm.my/ |