Experiment on Photocromism and Piezochromism Free Essays

Introduction This experiment investigates an oxidative coupling reaction in an to synthesis thermodynamically dimmer from 2,4,5-trippingly-1 H-immediate. The resulting compound was investigated for both photometric and piezoelectric properties by way of formation of a stable radical, utilizing visual observations and UP-Visas as a means of distinction. Both the oxidative coupling reaction and the dimmers interaction with light re depicted In the reactions in figure 1. We will write a custom essay sample on Experiment on Photocromism and Piezochromism or any similar topic only for you Order Now Figure 1 : Oxidative Coupling reaction of 2,4,5-trippingly-1 H-imitated Experimental Ethanol (mall), potassium hydroxide (8. Egg, 2. Moll) and water (ml) were added in order to H-imitated (0. Egg, 3. Moll). The mixture was stirred until clear before It was cooled to 5 co. A solution of potassium Africanized (3. 0021 g, 9. Moll), water (mall) and ethanol (mall) was prepared and added drowses Into the mixture ensuring the temperature did not rise above 10 co. A grey precipitate was Isolated from the yellow mixture through vacuum filtration and washed with water (ml x 5) and 50% aqueous ethanol. The mixture was dried under vacuum suction and the melting point was determined. Yield: 0. Egg, 90. 8% m. P-199. 8-200. ICC. A portion of the dimmer (0. 0305 g, 0. Molotov) was quantitatively dissolved in ml of toluene. The solution was left for min until colorless. The UP- Visas spectra was recorded for the colorless sample. How to cite Experiment on Photocromism and Piezochromism, Papers