文献类型： 外文期刊

作者： Feng, Kang-Kang ¹ ; Wu, Ji-Song ² ; Li, Yan-Ping ³ ; Tan, Yong-An ¹ ; Xin-Zhang ¹ ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Plant Protect, Nanjing 210014, Peoples R China

2.Nanjing Univ, Med Sch, Nanjing 210093, Jiangsu, Peoples R China

3.China Pharmaceut Univ, Dept Pharmaceut, State Key Lab Nat Med, Nanjing 210009, Peoples R China

关键词： Coordination Polymer; Benzimidazole; Fluorescence; Theoretical Calculation

期刊名称：INORGANIC CHEMISTRY COMMUNICATIONS （ 影响因子：3.8； 五年影响因子：2.9 ）

ISSN： 1387-7003

年卷期： 2023 年 158 卷

页码：

收录情况： SCI

摘要： Benzimidazole and its derivatives have received great attention owing to its good biocompatibility and excellent optical properties. Furthermore, metal coordination polymers of benzimidazole have also attracted considerable interest. However, the synthesis of functional benzimidazole ligands involves quite complicated steps, which hinders their application. In this study, we designed and synthesized two benzimidazole coordination polymers, [(C15H10N4O)center dot CuBr] (CP-1) and [(C45H31N12)center dot(CuBr)4CH3OH] (CP-2), using CuBr and 1,3-bis(1H-benzo[d] imidazol-2-yl)-methane by solvothermal method. Notably, the methylene (-CH2-) in original organic ligand converses to carbonyl (-C = O-) and double bond (-C = C-) under different condition, the In-situ methylene-transformation is rare, as it involves two oxidation processes: oxygenation and dehydroxidation. With the change of the hybridization mode (sp3 to sp2) of the central carbon atom, the molecular conjugation greatly increases. Therefore, fluorescence properties of two CPs were investigated in detail that the CP-2 exhibits photoluminescence characteristics, and it emits yellow light under UV lamp. Meanwhile, the theoretical calculations were also carried out to study and verify the above conclusions, and the results showed high consistency. Consequently, this work might provide a new strategy to construct materials with C = C bond and photo-luminescence effect.