A turn-on fluorescent probe for Cd2+ detection in aqueous environments based on an imine functionalized nanoscale metal–organic framework. Issue 86 (1st December 2017)

• Record Type: Journal Article
• Authors: Wang, Jintong; Xia, Tifeng; Zhang, Xin; Zhang, Qi; Cui, Yuanjing; Yang, Yu; Qian, Guodong
• Is Part Of: RSC advances. Volume 7:Issue 86(2017)
• Page Start: 54892
• Page End: 54897
• Publication Date: 2017-12-01
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra11162b
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A turn-on MOF-based fluorescent probe for Cd 2+ detection has been developed with high sensitivity and excellent selectivity. Abstract : A novel fluorescent probe was synthesized and explored to detect cadmium ions (Cd 2+ ) based on an imine functionalized metal–organic framework (MOF). The nanoscale MOF probe (∼100 nm) displayed a turn-on fluorescence in aqueous environments with the addition of Cd 2+ which could be ascribed to the interaction between the CN group and specific metal ions, presenting a low-toxicity, highly selective and sensitive detection method for Cd 2+ with a detection limit of 0.336 μM (37.8 ppb) and a broad linear range of 0–500 μM, which is promising for application in intracellular sensing and imaging of Cd 2+ . The probing mechanism was studied and discussed in detail.