kbinding PENGIKATAN SENYAWA KEMOSENSOR TURUNAN BENZIMIDAZOL PADA PEMBENTUKAN KOMPLEKS SENSOR-CN
Three chemosensor compounds for detecting cyanide anions have been synthesized. These compounds are derivatives of the benzimidazole compound (S1) with different substituents bonded directly to position 2 of the benzene ring system. The substituent of the Nitro group gives the structure of the S2 compound, the Azo group gives the structure of the S5 compound, and the Azo-Nitro group gives the structure of the S6 compound. Recognition of the CN¯ ion was carried out by dissolving the cyanide salt in distilled water (concentration 1 x 10¯7 M and concentration up to 8 equivalents) and dropping 50 L into the Sensor/DMSO solution. The determination of binding was calculated based on the results of the analysis of the intensity of the UV-vis instrument and the spectrometer in the form of the Benesi-Hilderbrand curve of the sensor-anion complex solution. The best binding to the cyanide ion is in the S2-CNˉ complex: 2.6 × 106 Mˉ1.
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