Thiophene and furan appended pyrazoline based fluorescent chemosensors for detection of Al3+ ion
| Autor: | Manjunath Rangasamy, Kannan Palaninathan |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Detection limit
Metal ions in aqueous solution Pyrazoline 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Fluorescence 0104 chemical sciences Ion Inorganic Chemistry chemistry.chemical_compound chemistry Furan Materials Chemistry Thiophene Titration Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | Inorganic Chemistry Communications. 101:177-183 |
| ISSN: | 1387-7003 |
| DOI: | 10.1016/j.inoche.2019.01.038 |
| Popis: | Thiophene and furan appended pyrazoline receptors R1 and R2 were designed and synthesized for selective detection of Al3+ ion. Their photophysical properties were studied by UV–visible and fluorescence spectra. Surprisingly, both receptors R1 and R2 were displayed an excellent selective and sensitive response to Al3+ ion alone over other tested metal ions. Both the receptor R1 and R2 displays 1:1 stoichiometry for [R1-Al3+] and [R2-Al3+] complex and formed with an association constant of 1.84 × 104 M−1 and 1.92 × 104 M−1 respectively. The limit of detection were calculated for R1 and R2 since 8.92 × 10−8 M and 1.04 × 10−7 M by the fluorescence titration method. The thiophene based receptor R1 exhibited superior chemosensor characteristics such as high intensity absorption and emission at longer wavelength as compered that of furan based receptor R2. |
| Databáze: | OpenAIRE |
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