Abstract
One of the organic dye materials which has long been investigated is regarded as rhodamine 6G dye class. This dye material shows a special attractive intention with considerable interests due to the reason of its promising photochemical properties such as clear photoabsorption and emission characteristics. In this study, a novel fluorescent dye compound based on rhodamine 6G derivative was designed and synthesised through the reaction of rhodamine 6G hydrazide and indole-3-carboxaldehdyde. The resulting absorption and fluorescent emission spectra of this chemosensor were determined on the properties of sensing function towards Hg2+. This chemosensor 1 was also investigated on the binding ratio between chemosensor 1 towards Hg2+ using Job's method. Related electron density and energy state of the dye compound were also characterised by computational calculations.
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