A multiple target chemosensor for the sequential fluorescence detection of Zn2+ and S2− and the colorimetric detection of Fe3+/2+ in aqueous media and living cells. Issue 1 (6th November 2018)

• Record Type: Journal Article
• Authors: Yun, Jin Yeong; Chae, Ju Byeong; Kim, Mingeun; Lim, Mi Hee; Kim, Cheal
• Is Part Of: Photochemical & photobiological sciences. Volume 18:Issue 1(2019)
• Page Start: 166
• Page End: 176
• Publication Date: 2018-11-06
• Subjects: Photochemistry -- Periodicals; Photobiology -- Periodicals; 541.35
• DOI: 10.1039/c8pp00408k
• Languages: English
• ISSNs: 1474-905X

Abstract

Abstract : A novel multiple target sensorDHIC was developed for the fluorescence detection of Zn 2+ and S 2− and colorimetric detection of Fe 3+/2+ . Moreover, DHIC could image sequentially Zn 2+ and S 2− in living cells. Abstract : A novel multiple target sensor, ( E )-5-((4-(diethylamino)-2-hydroxybenzyldene)amino)-1 H -imidazole-4-carboxamide (DHIC ), was synthesized for fluorescence detection of Zn 2+ and S 2− and colorimetric detection of Fe 3+/2+ in aqueous media.DHIC can operate as a turn "on–off" sequential fluorescent sensor for Zn 2+ and S 2− . Detection limits (1.59 μM and 8.03 μM) for Zn 2+ and S 2− are below the WHO standards (76.0 μM and 14.7 μM). TheDHIC –Zn 2+ complex could be reversibly reused with ethylenediaminetetraacetic acid. Importantly, DHIC could image sequentially Zn 2+ and S 2− in living cells. Moreover, DHIC displayed a discriminatory color change from pale yellow to orange yellow to Fe 3+/2+ . The detection limit ofDHIC for Fe 3+/2+ (0.73 μM and 1.11 μM) is far below the EPA drinking water standard (5.37 μM). The sensorDHIC could be applied to analyze Fe 3+ in real samples.