Three new ternary cobalt(II)-coordination polymers containing isomers of bis(benzimidazole) linkers, namely, [Co(TBTA)(L1)₂]_n (1), [Co(TBTA)(L2)₂]_n (2) and [Co(TBTA)(L3)_1.5]_n (3) (L1 = 1,2-bis(benzimidazol-1-ylmethyl)benzene, L2 = 1,3-bis(benzimidazol-1-ylmethyl)benzene, L3 = 1,4-bis(benzimidazol-1-ylmethyl)benzene, H₂TBTA = tetrabromoterephthalic acid) were hydrothermally synthesized and characterized. 1 exhibits a 3D uninodal pcu framework, 2 possesses a hcb layer and 3 is a 1D chain structure. 1, 2 and 3 are highly sensitive and selective luminescent chemosensors for detection of acetylacetone, benzaldehyde and Cr₂O₇²⁻ anions in water.

中文翻译：

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多维发光钴（II）配位聚合物作为传感器，具有极高的灵敏度和选择性，可检测乙酰丙酮，苯甲醛和Cr2O72-

三种新的含双（苯并咪唑）连接基异构体的三元钴（II）配位聚合物，即[Co（TBTA）（L1）₂ ] _n（1），[Co（TBTA）（L2）₂ ] _n（2）和[Co（TBTA）（L3）_1.5 ] _n（3）（L1 = 1,2-双（苯并咪唑-1-基甲基）苯，L2 = 1,3-双（苯并咪唑-1-基甲基）苯，L3 =水热合成并表征1,4-双（苯并咪唑-1-基甲基）苯，H ₂ TBTA =四溴对苯二甲酸。1展示了3D单齿pcu框架，2展示了hcb层和3是一维链结构。1，2和3是用于检测乙酰丙酮，苯甲醛和Cr高灵敏度和选择性的发光化学传感器_2个ö ₇ ^2-阴离子在水中。