title: Two novel bipyrazole derivative ligands: Synthesis, crystal structure, theoretical studies, and sensitive response toward Fe(3.).
abstract: Two novel bipyrazole derivative ligands L1 (4-(di(1H-pyrazol-1-yl)methyl)-N,N-diphenylaniline) and L2 (4-(di(1H-pyrazol-1-yl)methyl)-N,N-bis(4-ethoxy phenyl)aniline), were synthesized, and fully characterized. The crystal structures of the two ligands were confirmed by single-crystal X-ray diffraction analysis. The structural analysis revealed that two pyrazole units are attached to the same carbon atom connected with triphenylamine moiety. The UV-vis absorption and fluorescence spectral properties of the ligands were investigated and explained relying on theoretical calculation. Significantly, it was found that the ligands display an exclusively selective and sensitive response toward Fe(3+) with aid of UV-vis absorption spectroscopic methods.
authors.affiliation: Department of Chemistry, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, Hefei 230039, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Du
authors.affiliation: Department of Chemistry, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, Hefei 230039, China.
authors.forename: Yingzhong
authors.initials: Y
authors.lastname: Zhu
authors.affiliation: Department of Chemistry, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, Hefei 230039, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Wang
authors.affiliation: Department of Chemistry, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, Hefei 230039, China.
authors.forename: Xuesong
authors.initials: X
authors.lastname: Zhao
authors.affiliation: Department of Chemistry, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, Hefei 230039, China. Electronic address: jywu1957@163.com.
authors.forename: Jieying
authors.initials: J
authors.lastname: Wu
authors.affiliation: Department of Chemistry, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, Hefei 230039, China; State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, China. Electronic address: yptian@ahu.edu.cn.
authors.forename: Yupeng
authors.initials: Y
authors.lastname: Tian
keywords: Chemosensors; Crystal structure; Fe(3+); Pyrazole; Theoretical calculation; UV–vis absorption spectra