(Invited) Differences in Emission Properties for Triboluminescent EuD4tea Synthesized Using Both Europium Nitrate or Europium Acetate

Europium tetrakis dibenzoylmethide triethylammonium (EuD 4 TEA) is one of the most intense triboluminescent (TL) materials currently known. Some time ago, the authors reported that the triboluminescent yield was increased by 82% by changing the starting europium salt from europium chloride to europium nitrate. Unfortunately, europium nitrate has been classified as a hazardous material that cannot be shipped by air, which limits the availability of manufacturers and increases the cost. In an effort to further reduce the synthesis cost of EuD 4 TEA, we explore the effects of europium acetate on the triboluminescent properties of EuD 4 TEA by comparing the triboluminescent yield. The photoluminescent spectra as well as crystal structure using an optical microscope will also be explored