Absorption Spectrum of a Conjugated Dye By: Scott Holdren Abstract The absorption spectrum of a series of conjugated dyes is produced by a UV/VIS spectrometer to calculate the empirical parameter α and to find the length of the conjugated chain using the free electron model. Diluted solutions of each dye are analyzed using a UV/VIS spectrometer to determine the wavelength of maximum absorbance (λmax) for each dye. Using this wavelength, the best fit α is determined to be equal […]
