Synthesis, characterization, and electrochemical and electrical properties of novel mono and ball-type metallophthalocyanines with four 9,9-bis(4-hydroxyphenyl)fluorene
作者:M. Salih Ağırtaş、Ahmet Altındal、Bekir Salih、Sinan Saydam、Özer Bekaroğlu
DOI:10.1039/c0dt01575j
日期:——
The new mono-nuclear 4–5 and ball-type homo-dinuclear 6phthalocyanines have been synthesized from the corresponding phthalodinitrile derivative 3. The synthesized compounds have been characterized by elemental analysis, UV–vis, IR,1H-NMR and MALDI-TOF-mass spectroscopies. The redox behaviours of the complexes were identified by cyclic voltammetry and square wave voltammetry. The temperature dependence of the electronic properties of compounds and adsorption of SO2 on thin film of 6 were investigated by conductivity measurements using an interdigital transducer structure on glass substrate. Dc conductivity, measured between 300–475 K, is thermally activated with the activation energy ranging between 0.67 and 0.90 eV. The ac conductivity is found to vary with frequency, ω, as ωs in which the frequency exponent s decreases with temperature suggesting a hopping conduction mechanism for all compounds. The SO2 sensing result showed that the spin coated film of 6 exhibits very good SO2 sensing properties, fast response and recovery rate, high sensitivity and good repeatability.
由相应的邻苯二甲腈衍生物3合成了新的单核4-5和球型同双核6酞菁。合成的化合物通过元素分析、UV-vis、IR、1H-NMR和MALDI-TOF-进行了表征。质谱。通过循环伏安法和方波伏安法鉴定了配合物的氧化还原行为。通过使用玻璃基板上的叉指换能器结构进行电导率测量,研究了化合物的电子特性和 SO2 在 6 薄膜上的吸附的温度依赖性。直流电导率在 300–475 K 之间测量,通过热激活,激活能范围在 0.67 到 0.90 eV 之间。发现交流电导率随频率 ω 变化,其中频率指数 s 随温度降低,表明所有化合物均存在跳跃传导机制。 SO2传感结果表明,6的旋涂薄膜表现出非常好的SO2传感性能,响应和恢复率快,灵敏度高,重复性好。