Spectroscopic and luminescence properties of an isonicotinic acid
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Date
2005
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Abstract
An isonicotinic acid N-oxide Zn(II) compound was characterized on the basis of elemental analysis. FTIR spectra of the compound and free isonicotinic acid N-oxide (INO) were recorded in the range 4000-400 $cm^{-1}$. Cathodoluminescence (CL) spectra from the $Zn(INO)_2$ complex were recorded. The luminescence data were interpreted in terms of the emission band at 470 nm. The green luminescence $(sim 470 nm)$ arises from $Zn^{2+}$ transition $^4T_1(^4G)rightarrow ^6A_1 (^6S)$. It shows a weak vibronic structure, and short lifetimes less than 150 $mu s$. The lifetime and intensity of the signal are temperature dependent, and the parameters are reported for the 470 nm emission line.