Browsing by Author "Nur Syazwani Kassim"

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Synthesis, crystal structures and anion exchange studies of coordination polymers containing N,N-2,6-BIS(4-Pyridymethyl) pyridine dicarboxamide with chromate anion
    (Terengganu: Universiti Malaysia Terengganu, 2016-09) Nur Syazwani Kassim
    The release of hazardous anions such as chromate, nitrate and perchlorate into the waterways system has cause a destructive effect on human and the aquatic environment. To overcome this problem, many techniques utilizing amide compounds as anion receptors have been reported.
  • Thumbnail Image
    Item
    UV-Vis Spectroscopic Studies of Diamide Ligands as Potential Tools for Anion Sensor
    (EDUCATUM Journal of Science, Mathematics and Technology (EJSMT), 2016) Maisara Abdul Kadir; Mohamad Nur Azshary Mohd Salleh; Nur Syazwani Kassim
    This paper describes the results from ultraviolet (UV) spectroscopic studies of diamide ligands namely N,N’-2,6- bis(3-pyridylmethyl)pyridine dicarboxamide (L5) and N,N’-2,6-bis(4-pyridylmethyl)pyridine dicarboxamide (L6) towards chloride, nitrate and chromate anions in solution. The responses of the ligands towards anions are monitored by the changes of the absorbance in the UV spectra. The time interval experiments were conducted from 0 to 3 hours, resulted to the rise of the absorbance of the ligands. The change in the absorbance value is attributed to the increase of interaction between the ligands and anions that is proportional with time. In contrast to the ligands, the absorbance of anion is decreased showing the reduction of anion concentration in the solution. Rapid UV response indicates the sensitivity of these ligands towards anions which at the same time showing promising potential as sensitive anion sensor.