Nanomonitoring of ceramic surface

The current paper considers the feasibility of application of novel supramolecular complexes based on nanodiamond particles and rear earth elements (ND-REE) as perspective luminescent material for surface mapping and discontinues of minimal size detection. The new hybrid supramolecular complex of composition (ND)m[Eu (BPhen.)2(NO3)2]m has been developed and fabricated. Spectral-luminescent and structural properties of complex have been investigated. It has been shown that the complex has broad excitation bands from 200 to 400 nm, very effective red long-lifetime luminescence in the millisecond range and high quantum yield (about 80%). Using scanning electron microscopy the morphology and size of the complexes have been investigated. The complexes with NDs look like finer grains of spherical shape without sharp corner pieces. The size of primary particles varies from 0.1μm, which are capable to agglomeration up to 10 μm in average. Using the fine suspension of ND-containing complex in isopropyl alcohol as luminescent penetrant for ceramic surface status inspection it has been demonstrated that this type of complexes can be revealed on surface under UV-irradiation as bright red indicated traces