Pyrimidine hydrazide-like Zn(II) coordination polymer as a fluorescent chemosensor for selective, sensitive and practice detection of 2,4-DNP and 4-NP

IF 2.7 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR
Xu-Ling Cui, Heng Xu, Qiang-Hong Yu, Kang-Jian Yin, Shun-Ping Zhao, Rong-Yi Huang
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引用次数: 0

Abstract

Unusual luminescent zinc (II) coordination polymer (Zn (II)-CP) was synthesized from a new pyrimidine hydrazide (H2L, N′- (pyrimidin-2-yl) benzo hydrazide) as a principal ligand and characterized by elemental analysis, infrared spectroscopy, and single-crystal X-ray diffraction. The Zn (II)-CP ([Zn3(HL)2Cl4]n) belonging to monoclinic crystal system with space group of P21/n, where the chelate ring structure was formed with the intervention strategy of the tetradentate ligand (HL)and a one-dimensional (1D) infinite chain-shaped structure was also created by bridging Cl ligands. Zn(II)-CP displays the observed red emission with the maximum peak at 625 nm in solid state upon excitation at 300 nm. Subsequently, 2,4-dinitrophenol (2,4-DNP) / 4-nitrophenol (4-NP) in aqueous solution was identified and detected by the change of fluorescence intensity of Zn(II)-CP, and the Ksv value was 4.7402 × 104 M−1 / 5.5739 × 104 M−1. The calculated recovery rates in different water from nature were 100.07–100.46 % for 2,4-DNP and 99.89–101.50 % for 4-NP, which provides a new analytical approach for monitoring of 2,4-DNP and 4-NP in natural water. In addition, the binding detection mechanism of the complex towards 2,4-DNP or 4-NP were analyzed by PXRD diffraction, spectral experiments and theoretical calculation(DFT).
类嘧啶肼类锌(II)配位聚合物作为选择性、灵敏和实用检测2,4- dnp和4-NP的荧光化学传感器
以一种新型嘧啶酰肼(H2L, N′-(嘧啶-2-基)苯并酰肼)为主要配体合成了一种特殊的发光锌(II)配位聚合物(Zn (II)- cp),并用元素分析、红外光谱和单晶x射线衍射对其进行了表征。Zn (II)-CP ([Zn3(HL)2Cl4]n)属于单斜晶系,空间群为P21/n,其中四齿配体(HL−)的干预策略形成了螯合环结构,Cl−的桥接也形成了一维(1D)无限链状结构。在300 nm激发下,Zn(II)-CP在固态状态下显示出所观察到的红色发射,其峰值在625 nm处。随后,通过Zn(II)-CP荧光强度的变化对水溶液中的2,4-二硝基苯酚(2,4- dnp) / 4-硝基苯酚(4-NP)进行了鉴定和检测,Ksv值为4.7402 × 104 M−1 / 5.5739 × 104 M−1。计算得到的2,4- dnp和4-NP在不同自然水体中的回收率分别为100.07 ~ 100.46%和99.89 ~ 101.50%,为天然水体中2,4- dnp和4-NP的监测提供了新的分析方法。此外,通过PXRD衍射、光谱实验和理论计算(DFT)分析了配合物对2,4- dnp或4-NP的结合检测机制。
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来源期刊
Inorganica Chimica Acta
Inorganica Chimica Acta 化学-无机化学与核化学
CiteScore
6.00
自引率
3.60%
发文量
440
审稿时长
35 days
期刊介绍: Inorganica Chimica Acta is an established international forum for all aspects of advanced Inorganic Chemistry. Original papers of high scientific level and interest are published in the form of Articles and Reviews. Topics covered include: • chemistry of the main group elements and the d- and f-block metals, including the synthesis, characterization and reactivity of coordination, organometallic, biomimetic, supramolecular coordination compounds, including associated computational studies; • synthesis, physico-chemical properties, applications of molecule-based nano-scaled clusters and nanomaterials designed using the principles of coordination chemistry, as well as coordination polymers (CPs), metal-organic frameworks (MOFs), metal-organic polyhedra (MPOs); • reaction mechanisms and physico-chemical investigations computational studies of metalloenzymes and their models; • applications of inorganic compounds, metallodrugs and molecule-based materials. Papers composed primarily of structural reports will typically not be considered for publication.
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