Pyrene Substituted Phthalonitrile Derivative As a Fluorescent Sensor For Detection of Fe3+ Ions in Solutions
作者:Shaya Y. Alraqa、Esra Nur Kaya、Neşe Taşci、Dogan Erbahar、Mahmut Durmuş
DOI:10.1007/s10895-022-02976-5
日期:2022.9
In this current study, the novel bis[4,5-(pyrene-2-yl)-3,6-(hexyloxy)] phthalonitrile (SPN) fluorophore has been successfully synthesized. Structural characterization of this novel compound was performed by different spectroscopic methods such as FT-IR, MALDI-TOF, 1H-NMR, 13C-NMR and elemental analyses as well. In addition, the photophysical properties were determined using UV–vis absorption, steady-state fluorescence, time-resolved fluorescence spectroscopic methods and quantum chemical calculations. The metal sensing behavior of the SPN was determined in the presence of various metals (Li+, Na+, K+, Mg2+, Ca2+, Ba2+, Mn2+, Fe3+, Cr3+, Co2+, Ni2+, Ag+, Cd2+, Al3+, Hg+ and Zn2+) using fluorescence spectroscopy. The novel pyrene based phthalonitrile (SPN) showed high sensitivity and selectivity towards Fe3+ ion over other examined metal ions. In order to perform the determination of Fe3+ ion in environmental samples, experimental conditions such as selectivity, stability, precision, sensitivity, accuracy and recovery were optimized. Also, the complex stoichiometry of the novel pyrene based phthalonitrile (SPN) and Fe3+ ions was determined by a Job’s plot. The compound was also studied via density functional theory calculations revealing the interaction mechanism of the molecule with Fe3+ ions.
在这项研究中,新型双[4,5-(
芘-2-基)-3,6-(己氧基)]邻苯二甲腈(
SPN)荧光团已成功合成。通过FT-IR、MALDI-TOF、1H-NMR、13C-NMR和元素分析等不同的光谱方法对这种新型化合物的结构进行了表征。此外,还通过紫外-可见吸收、稳态荧光、时间分辨荧光光谱法和量子
化学计算确定了其光物理性质。使用荧光光谱法,在各种
金属(Li+、Na+、K+、Mg2+、Ca2+、Ba2+、Mn2+、Fe3+、Cr3+、Co2+、Ni2+、Ag+、Cd2+、Al3+、Hg+和Zn2+)存在的情况下,确定了
SPN的
金属传感行为。新型
芘基邻苯二甲腈(
SPN)对Fe3+离子表现出比其他被测
金属离子更高的灵敏度和选择性。为了测定环境样品中的Fe3+离子,对选择性、稳定性、精确度、灵敏度、准确性和回收率等实验条件进行了优化。此外,通过Job图确定了新型
芘基邻苯二甲腈(
SPN)和Fe3+离子的复杂
化学计量。还通过密度泛函理论计算研究了这种化合物,揭示了分子与Fe3