In this thesis, the fluorescence quenching of the new N-dimethylbenzylamine palladium (?) curcuminate complex was used to measure very low amounts of water in organic solvents. The presence of low amounts of water in organic solvents causes the destruction of many catalysts and interferes with industrial processes. Therefore, designing a simple and fast method for measuring small amounts of water in organic solvents is very important. The linear regions of the method for measuring water in dimethyl sulfoxide, acetonitrile, ethanol, methanol, benzene and toluene are (0.08-13.57), (0.07-18.8), (0.03-14.5), (0.15-1.25 and 4.7-25.0), (0.08-0.7 and 4.7-16.9), (2.033-16.96) respectively. The detection limit for determination of water in dimethyl sulfoxide, acetonitrile, ethanol, methanol, benzene and toluene are 0.013, 0.400, 0.001, 0.05, 0.01, 0.406 V/V% respectively. Solvatochromism studies showed that ? ? ?* and n ? ? * intra-ligand electronic transitions are responsible for quenching of the fluorescence signal of the complex when water added to the organic solvent.