Mandal Jayanta, Dey Arka, Sarkar Sourav, Khatun Mohafuza, Ghorai Pravat, Ray Partha Pratim, Mahata Partha, Saha Amrita
Department of Chemistry, Jadavpur University, Kolkata 700032, India.
Department of Physics, Jadavpur University, Kolkata 700032, India.
Inorg Chem. 2024 Mar 11;63(10):4527-4544. doi: 10.1021/acs.inorgchem.3c03646. Epub 2024 Feb 26.
Here, electrical conductivity and explosive sensing properties of multifunctional chromone-Cd(II)-based coordination polymers (CPs) (-) have been explored. The presence of different pseudohalide linkers, thiocyanate ions, and dicyanamide ions resulted in 1D and 3D architecture in the CPs. Thin film devices developed from CPs - (complex-based Schottky devices, , , , and , respectively) showed semiconductor behavior. Their conductivity values increased under photo illumination (1.37 × 10, 1.85 × 10, 1.61 × 10, and 2.01 × 10 S m under dark conditions and 5.06 × 10, 8.78 × 10, 7.26 × 10, and 10.21 × 10 S m under light). The nature of the - plots of these thin film devices under light irradiation and dark are nonlinear rectifying, which has been observed in Schottky barrier diodes (SBDs). All four CPs (-) exhibited highly selective fluorescence quenching-based sensing properties toward well-known explosives, 2,4-dinitrophenol (DNP) and 2,4,6-trinitrophenol (TNP). The limit of detection (LOD) values are 55, 28, 27, and 31 μM for TNP and 78, 44, 32, and 41 μM for DNP for complexes -, respectively. A structure property correlation has been established to explain optoelectronic and explosive sensing properties.
在此，已对基于多功能色酮 - 镉（II）的配位聚合物（CPs）（ - ）的电导率和爆炸物传感特性进行了探索。不同拟卤化物连接体、硫氰酸根离子和双氰胺根离子的存在导致了CPs中一维和三维结构的形成。由CPs - （分别为基于配合物的肖特基器件， ， ， ，和 ）制成的薄膜器件表现出半导体行为。它们的电导率值在光照下增加（黑暗条件下为1.37×10、1.85×10、1.61×10和2.01×10 S m，光照下为5.06×10、8.78×10、7.26×10和10.21×10 S m）。这些薄膜器件在光照和黑暗条件下的 - 图的性质是非线性整流的，这在肖特基势垒二极管（SBDs）中已被观察到。所有四种CPs（ - ）对著名的爆炸物2,4 - 二硝基苯酚（DNP）和2,4,6 - 三硝基苯酚（TNP）都表现出基于高选择性荧光猝灭的传感特性。对于配合物 - ，TNP的检测限（LOD）值分别为55、28、27和31 μM，DNP的检测限（LOD）值分别为78、44、32和41 μM。已经建立了结构 - 性质相关性来解释光电和爆炸物传感特性。
