Peculiarities of bright blue liquid-phase chemiluminescence of the Eu2+* ion generated at interactions in the systems EuX3·6H2O-THF-R3−nAlHn-O2 (X=Cl, NO3; R=Bui, Et and Me; n=0, 1)

The influence of experimental conditions on the chemiluminescence (CL) and photoluminescence (PL) in the systems EuX3·6H2O-THF-EOC-O2 (X=Cl, NO3; EOC=organoelement compounds) was studied, including the concentration of europium, additives of luminescent compounds TbCl3·6H2O and Ru(bpy)2Cl2·6H2O, the nature and concentrations of EOC (Bui2AlH, Me3Al, Et3Al, Bui3Al, 9-borabicyclo(3.3.1.)nonane (9-BBN), diborane B2H6, sodium borohydride NaBH4), replacement of chloride anion in the EuCl3·6H2O salt to an NO3, CO3, SO4, concentration and conditions of the introduction of oxygen into the reaction solution. The quantum yields of CL occurring in the systems EuCl3·6H2O-THF-Bui2AlH-O2 (5.85·10−4 Einstein mol−1) and Eu(NO3)3·6H2O-THF-Bui2AlH-O2 (9·10−9 Einstein mol−1) were measured. The PL quantum yields of the Eu2+* ion of the isolated complex EuCl2·(THF)2 in THF (φPL=0.07), in the reaction solutions obtained after the interactions in the systems EuCl3·6H2O-THF-Bui2AlH-O2 (φPL=0.51) and Eu(NO3)3·6H2O-THF-Bui2AlH-O2 (φPL=0.05) were measured.