Question

Why does p-nitroaniline absorb at shorter wavelength (384nm) as compared to its ortho isomer (408nm) inspite of being more polar

Answer 1

Answer:

The transient absorption features observed in the visible region are assigned to vibrationally ... feature found in these studies is a very short excited-state ... of about 50% is observed for PNA in the slightly more polar ... excitation of PNA is measured at 20 wavelengths ranging from ... in absorbance to be better than (15%.)

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