Li, Dong; Lv, Na; Yu, Jiankang; Qiao, Yu; Xue, Xiangxin; Li, Hongji; Che, Guangbo published an article in Journal of Molecular Structure. The title of the article was 《Synthesis, crystal structure and highly sensitive detection property of a fluorescent copper coordination polymer》.Reference of 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine The author mentioned the following in the article:
A new luminescent metal-organic framework [Cu(Hbcb)(PYTPY)] (1) (H3bcb = 3,5-bis((5′-carboxylbenzyl)oxy)benzoic acid, PYTPY = 4′-(4-pyridyl)-2,2′:6′,2”-terpyridine) was successfully synthesized and structurally characterized by elemental anal., IR and single crystal x-ray diffraction. Anal. revealed that an infinite one-dimensional ladder chain was created by offset face-to-face π-π stacking interactions between H3bcb and PYTPY. And it exhibits a three-dimensional supramol. structure through the π-π stacking interactions between chains. The thermal stabilities and gas adsorption properties of complex 1 was studied. Complex 1 has good thermal stabilities and selective adsorption properties for CO2. The solid-state luminescent properties of MOFs were measured carefully by UV irradiation at room temperature Most noteworthy, complex 1 exhibits a high sensitivity for Fe3+ and nitrobenzene in ethanol solution with mixed metal ions and aromatic compounds, which makes it be a promising crystalline material as luminescent probe to Fe3+ and nitrobenzene. Importantly, complex 1 can keep its original framework and be reused in sensing experiments The sensing mechanism also was studied. In addition to this study using 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine, there are many other studies that have used 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3Reference of 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine) was used in this study.
4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3) belongs to pyridine derivatives. The ring atoms in the pyridine molecule are sp2-hybridized. The nitrogen is involved in the π-bonding aromatic system using its unhybridized p orbital. Reference of 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine Pyridine has a conjugated system of six π electrons that are delocalized over the ring.