TY - JOUR
T1 - Synthesis and Photophysical Properties of Ternary β-Diketonate Europium(III) Complexes Incorporating Bipyridine and its Derivatives
AU - Al-Busaidi, Idris Juma
AU - Ilmi, Rashid
AU - Zhang, Daynang
AU - Dutra, José D.L.
AU - Oliveira, Willyan
AU - Al-Rasbi, Nawal K.
AU - Zhou, Liang
AU - Wong, Wai-Yeung
AU - Raithby, Paul
AU - Khan, Muhammad
N1 - Funding Information:
MSK acknowledges His Majesty's Trust Fund for Strategic Research (Grant No. SR/SQU/SCI/CHEM/21/01 ) and The Ministry of Higher Education, Research and Innovation (MoHERI), Oman (Grant: RC/RG-SCI/CHEM/20/01 ) for funding. IJAB thanks Ministry of Education, Sultanate of Oman (MOE) for a Ph.D. scholarship. R. I. thanks His Majesty's Trust Fund for a postdoctoral fellowship. JDLD appreciates the financial support from the Brazilian funding agencies: CAPES , CNPq ( 421733/2018-7 ), FACEPE ( APQ - 0675-1.06/14 ) and FAPITEC-SE (Process N. 019.203.01074/2011-1 ). WFO thanks PIBIC/CNPq/UFS for a scientific initiation fellowship. The computing for this project was performed on the LCAD-UFS (UFS High Performance Computing Laboratory). WYW thanks the Hong Kong Research Grants Council ( PolyU 153058/19P ), Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials ( 2019B121205002 ), Hong Kong Polytechnic University ( 1-ZE1C ), Research Institute for Smart Energy (RISE) and the Endowed Professorship in Energy from Ms Clarea Au ( 847S ) for the financial support. LZ is grateful to the financial aid from National Natural Science Foundation of China ( 21771172 ), Youth Innovation Promotion Association of Chinese Academy of Sciences ( 2013150 ). PRR is grateful to the Engineering and Physical Sciences Research Council (EPSRC) for continued funding (Grant EP/K004956/1 ).
PY - 2022/1/31
Y1 - 2022/1/31
N2 - Two new octa-coordinated ternary europium(III) complexes of the type [Eu(btfa)3(Br2-bpy)] (Eu-1) and [Eu(btfa)3(PhE2-bpy)] (Eu-2) (where btfa = 4,4,4-trifluoro-1-phenyl-1,3-butanedione, Br2-bpy = 5,5'-dibromo-2,2'-bipyridine, PhE2-bpy 5,5'-bis(phenylethynyl)-2,2'-bipyridine) together with a previously reported complex [Eu(btfa)3(bpy)] (Eu-3) have been synthesized. The complexes have been characterized by analytical and spectroscopic methods. The photophysical properties of the complexes have also been analyzed both experimentally and theoretically. The contribution of each ligand to the sensitized Eu(III) photoluminescence (PL) has been analyzed and is discussed. An energy transfer (ET) mechanism is proposed and discussed for the sensitized Eu(III) emission using experimental and theoretical data. The Eu(III) complex incorporating the parent bpy showed impressive performance as a double-emitting layer (EML) red organic light emitting diodes (R-OLEDs).
AB - Two new octa-coordinated ternary europium(III) complexes of the type [Eu(btfa)3(Br2-bpy)] (Eu-1) and [Eu(btfa)3(PhE2-bpy)] (Eu-2) (where btfa = 4,4,4-trifluoro-1-phenyl-1,3-butanedione, Br2-bpy = 5,5'-dibromo-2,2'-bipyridine, PhE2-bpy 5,5'-bis(phenylethynyl)-2,2'-bipyridine) together with a previously reported complex [Eu(btfa)3(bpy)] (Eu-3) have been synthesized. The complexes have been characterized by analytical and spectroscopic methods. The photophysical properties of the complexes have also been analyzed both experimentally and theoretically. The contribution of each ligand to the sensitized Eu(III) photoluminescence (PL) has been analyzed and is discussed. An energy transfer (ET) mechanism is proposed and discussed for the sensitized Eu(III) emission using experimental and theoretical data. The Eu(III) complex incorporating the parent bpy showed impressive performance as a double-emitting layer (EML) red organic light emitting diodes (R-OLEDs).
KW - Energy transfer mechanism
KW - Organic light emitting diodes
KW - Photoluminescence
KW - β-diketone
UR - http://www.scopus.com/inward/record.url?scp=85118322744&partnerID=8YFLogxK
U2 - 10.1016/j.dyepig.2021.109879
DO - 10.1016/j.dyepig.2021.109879
M3 - Article
VL - 197
JO - Dyes and Pigments
JF - Dyes and Pigments
SN - 0143-7208
M1 - 109879
ER -