Limits...
Photo- and electroluminescent properties europium complexes using bistriazole ligands.

Gusev AN, Shul'gin VF, Nishimenko G, Hasegawa M, Linert W - Synth Met (2013)

Bottom Line: Luminescent properties of two heteroleptic dibenzoylmethanate europium(III) complexes with 1,3-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)propane (H2L(1)) and 1,4-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)butane (H2L(2)) as ancillary ligands are described.The two double-layer-type electroluminescent cells with the structures: (1) ITO/NPB(40 nm)/Eu(DBM)2HL(1) (40 nm)/LiF (1 nm)/Al (100 nm) and (2) ITO/NPB(40 nm)/Eu(DBM)2HL(2) (40 nm)/LiF (1 nm)/Al (100 nm) emit red light originating from the europium complexes.The device 2 gives the maximum brightness of 455 cd/m(2) at 19.2 V.

View Article: PubMed Central - PubMed

Affiliation: Taurida National V.I. Vernadsky University, Simferopol 95007, Ukraine.

ABSTRACT
Luminescent properties of two heteroleptic dibenzoylmethanate europium(III) complexes with 1,3-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)propane (H2L(1)) and 1,4-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)butane (H2L(2)) as ancillary ligands are described. The two double-layer-type electroluminescent cells with the structures: (1) ITO/NPB(40 nm)/Eu(DBM)2HL(1) (40 nm)/LiF (1 nm)/Al (100 nm) and (2) ITO/NPB(40 nm)/Eu(DBM)2HL(2) (40 nm)/LiF (1 nm)/Al (100 nm) emit red light originating from the europium complexes. The device 2 gives the maximum brightness of 455 cd/m(2) at 19.2 V.

No MeSH data available.


Related in: MedlinePlus

Photoluminescence lifetime decay measurement of 1 and 2 in solid state 298 K (experimental and best-fit line).
© Copyright Policy
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC3584924&req=5

fig0025: Photoluminescence lifetime decay measurement of 1 and 2 in solid state 298 K (experimental and best-fit line).

Mentions: Luminescence lifetimes of solid samples were investigated for both Eu(III) complexes. Luminescence decay curves were obtained at 298 K by monitoring the 5D0→7F2 transition (612 nm) and are depicted in Fig. 4. Decay curves for the both complexes could be good fitted with a single exponential, indicating only one chemical microenvironment around where the Eu(III) ion existed [15] and it was in agreement with the result of only one 5D0→7F0 line in the emission spectrum. The lifetime values were found to be 837 and 995 μs for 1 and 2, respectively. This value are much longer than the previously reported value (318 μs) Eu(Dbm)3Phen [16]. Quite long lifetime of title complexes is consistent with the good shield the Eu(III) ion from coordination of solvating molecules, which prevents a potential non-radiative decay path.


Photo- and electroluminescent properties europium complexes using bistriazole ligands.

Gusev AN, Shul'gin VF, Nishimenko G, Hasegawa M, Linert W - Synth Met (2013)

Photoluminescence lifetime decay measurement of 1 and 2 in solid state 298 K (experimental and best-fit line).
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3584924&req=5

fig0025: Photoluminescence lifetime decay measurement of 1 and 2 in solid state 298 K (experimental and best-fit line).
Mentions: Luminescence lifetimes of solid samples were investigated for both Eu(III) complexes. Luminescence decay curves were obtained at 298 K by monitoring the 5D0→7F2 transition (612 nm) and are depicted in Fig. 4. Decay curves for the both complexes could be good fitted with a single exponential, indicating only one chemical microenvironment around where the Eu(III) ion existed [15] and it was in agreement with the result of only one 5D0→7F0 line in the emission spectrum. The lifetime values were found to be 837 and 995 μs for 1 and 2, respectively. This value are much longer than the previously reported value (318 μs) Eu(Dbm)3Phen [16]. Quite long lifetime of title complexes is consistent with the good shield the Eu(III) ion from coordination of solvating molecules, which prevents a potential non-radiative decay path.

Bottom Line: Luminescent properties of two heteroleptic dibenzoylmethanate europium(III) complexes with 1,3-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)propane (H2L(1)) and 1,4-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)butane (H2L(2)) as ancillary ligands are described.The two double-layer-type electroluminescent cells with the structures: (1) ITO/NPB(40 nm)/Eu(DBM)2HL(1) (40 nm)/LiF (1 nm)/Al (100 nm) and (2) ITO/NPB(40 nm)/Eu(DBM)2HL(2) (40 nm)/LiF (1 nm)/Al (100 nm) emit red light originating from the europium complexes.The device 2 gives the maximum brightness of 455 cd/m(2) at 19.2 V.

View Article: PubMed Central - PubMed

Affiliation: Taurida National V.I. Vernadsky University, Simferopol 95007, Ukraine.

ABSTRACT
Luminescent properties of two heteroleptic dibenzoylmethanate europium(III) complexes with 1,3-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)propane (H2L(1)) and 1,4-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)butane (H2L(2)) as ancillary ligands are described. The two double-layer-type electroluminescent cells with the structures: (1) ITO/NPB(40 nm)/Eu(DBM)2HL(1) (40 nm)/LiF (1 nm)/Al (100 nm) and (2) ITO/NPB(40 nm)/Eu(DBM)2HL(2) (40 nm)/LiF (1 nm)/Al (100 nm) emit red light originating from the europium complexes. The device 2 gives the maximum brightness of 455 cd/m(2) at 19.2 V.

No MeSH data available.


Related in: MedlinePlus