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221.
Prajwal Kumar Alex Joseph Praveen C. Ramamurthy Sankaran Subramanian 《Mikrochimica acta》2012,177(3-4):317-323
Glassy carbon electrodes (GCE) and carbon paste electrodes (CPE) were modified with imidazole functionalized polyaniline with the aim to develop a sensor for lead (II) in both acidic and basic aqueous solution. The electrodes were characterized by cyclic voltammetry and differential pulse adsorptive stripping voltammetry. The limit of detections obtained with glassy carbon electrode and carbon paste electrode are 20?ng?mL-1 and 2?ng?mL-1 of lead ion, respectively. An interference study was carried out with Cd(II), As(III), Hg(II) and Co(II) ions. Cd(II) ions interfere significantly (peak overlap) and As(III) has a depressing effect on the lead signal. The influence of pH was investigated indicating that bare and modified GCE and CPE show optimum response at pH?4.0 ± 0.05. Figure
Imidazole functionalized polyaniline modified glassy carbon and carbon paste electrodes were used for lead ion detection by using CV and DPASV techniques. The lower detection limit observed with GCE and CPE are 20?ng mL-1 and 2?ng mL-1. 相似文献
222.
223.
Mathan Sankaran Chokkalingam Uvarani Kumarasamy Chandraprakash Mani Umamaheswari Palathurai Subramaniam Mohan 《Journal of heterocyclic chemistry》2015,52(4):1082-1092
A sequence of functionalized pyrazole, isoxazole and benzodiazepine‐substituted quinolone derivatives were synthesized in good yield starting from readily available starting precursors. These approaches lead to the synthesis of hitherto unknown compounds with a varied substitution pattern by both conventional and microwave‐assisted method. A good number of analogues were evaluated for their in vitro cytotoxicity against human cervical and colon cancer cell lines by MTT protocol. Almost all the selected compounds showed remarkable cytotoxic activities. Among them, compound 4g and 4i emerged as the most promising scaffolds. These scaffolds will be used for further molecular level studies. 相似文献