Luminescence Properties of a Novel Eu3+ Dinuclear Coordination Compound

Coordination complex [Eu(μ2-OC2H5)(btfa)(NO3) (phen)]2·phen with high luminescent efficiency

“…The lifetime constants for Eu 3+ obtained from the plot in Fig. 8 are 1  = 0.67 ms and 2  = 0.82 ms for the powdered sample and  1 = 0.28 ms and 2 = 0.57 ms for the complex dissolved in a dimethylformamide solution [13]. The absolute quantum yield of PL measured in the powder samples by the integration sphere was determined to be 49.2%, while the sensitization efficiency was 89.3%.…”

“…[11,12]. Previously, we reported preliminary results on Eu(III) coordination compound bis[(μ 2 -etoxi)(benzoyl trifluoroacetonato)(nitrato)(1,10phenantroline)europium(III)]1,10-phentroline, hereafter [Eu(µ 2 -OC 2 H 5 )(btfa)(NO 3 )(phen)] 2 ·phen [13]. This work reports a further study of photoluminescence (PL) properties of europium(III) coordination complex [Eu(µ 2 -OC 2 H 5 )(btfa)(NO 3 )(phen)] 2 ·phen.…”

“…It is considered to be sensitive to the Eu 3+ environment, because the intensity of the 5 D 0 → 7 F 4 transition is determined not only by symmetry factors, but also by the chemical composition of the host matrix [23][24][25]. •phen complex at 300 K registered at 611 nm under 337-nm pulsed excitation [13].…”

“…Fig.7. Photoluminescence decay profiles for the powder and dissolved sample of the [Eu(µ 2 -OC 2 H 5 )(btfa)(NO 3 )(phen)] 2 •phen complex at 300 K registered at 611 nm under 337-nm pulsed excitation[13].…”