Chem423_fluorescenceproject_inlab_s08

Chem423_fluorescenceproject_inlab_s08 - CHEMISRTY 423...

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1 CHEMISRTY 423 Fluorescence, UV-VIS and Fourier-Transform Infrared Spectroscopy Laboratory Project Spring 2008 The fluorescence/UV-VIS/Fourier-transform infrared spectroscopy mini-project is an open- ended guided-inquiry laboratory exercise. Your approach should be to read through the reference material (cited below and attached), develop a plan-of-action to meet the stated objectives in the most efficient manner possible, perform the experiments, take notes and ask questions. This experiment explores the molecular behavior of polycyclic aromatic hydrocarbons (PAHs) in solution. You will use UV-visible absorption, fluorescence and IR spectroscopy to investigate the relationship between vibrations in anthracene’s ground electronic state and in its first excited state. In analyzing the photophysical features of anthracene, the vibronic spacings of anthracene’s emission versus those seen in the absorption/excitation will be compared numerically, and related to the IR spectral features. Generalized conclusions can then drawn regarding anthracene’s geometry and bonding while in its excited state as compared to its ground
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Chem423_fluorescenceproject_inlab_s08 - CHEMISRTY 423...

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