Abstract
The effect of hydrogen bonding, taking diethyl ether (Et 2O) as the hydrogen-bonding partner, on the dual emission of salicylic acid (SA) has been investigated with both steady-state and time-domain experiments. It has been observed that in place of dual emission, only a single fluorescence band is observed int he presence of Et 2O. This has been attributed to the fact that all SA molecules are converted into hydrogen-bonded complexes. Further, two configurations for the SA-Et 2O complexes are suggested to explain the dynamical behaviour at low temperatures.
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