Multi-responsive luminescent 2D Zn(II)-based coordination polymer for detection of trinitrophenol and Fe3+. Issue 2 (17th January 2020)

• Record Type: Journal Article
• Authors: Wang, Jing; Lu, Lu; Ding, Qiongjie; Zhang, Si-Le; Wang, Jun; Singh, Ayushi; Kumar, Abhinav; Ma, Aiqing
• Is Part Of: Journal of coordination chemistry. Volume 73:Issue 2(2020)
• Page Start: 307
• Page End: 316
• Publication Date: 2020-01-17
• Subjects: Coordination polymers -- luminescence -- nitro-aromatics -- sensing -- terpyridine; Coordination compounds -- Periodicals; 541.2242
• DOI: 10.1080/00958972.2020.1720002
• Languages: English
• ISSNs: 0095-8972

Abstract

Abstract: A new Zn(II)-based coordination polymer (CP), [Zn(HL)·1.5H2 O] (1 ), has been synthesized using 4-(2, 4, 6-tricarboxylphenyl)-3, 2ˊ, 6ˊ, 4ˊˊ-terpyridine (H3 L). Single-crystal X-ray diffraction reveals that 1 possesses a 2D layer-like structure, which further connects through hydrogen bonding interactions to form a 3D supramolecular network. The luminescence measurements showed that 1 is capable of detecting nitro-aromatic compounds (NACs) in particular 2, 4, 6-trinitrophenol (TNP) as well as Fe 3+ ions with high sensitivity and selectivity in aqueous medium. The limit of detections (LODs) for the recognition of TNP and Fe 3+ are 1.23 and 0.94 ppm, respectively. The reason for decrease in intensity of emission of 1 on addition of NACs to it has been examined by theoretical calculations which suggested that charge transfer is taking place between 1 and NACs which may be the prime reason for the decrease in emission intensity. Graphical Abstract: