Photo- and electro-luminescence studies of a new nine-coordinate ternary Eu(III) complex

Rashid Ilmi; Xiaoyang Xia; Willyan F. Oliveira; José D.L. Dutra; Liang Zhou; Wai-Yeung Wong; Paul Raithby; Muhammad S. Khan

doi:10.1016/j.jphotochem.2025.116740

Photo- and electro-luminescence studies of a new nine-coordinate ternary Eu(III) complex

Rashid Ilmi
, Xiaoyang Xia
, Willyan F. Oliveira
, José D.L. Dutra
, Liang Zhou
, Wai-Yeung Wong
, Paul Raithby
, Muhammad S. Khan

Sultan Qaboos University
Chinese Academy of Sciences
UFS
The Hong Kong Polytechnic University
Hong Kong Baptist University
University of Cambridge

Research output: Contribution to journal › Article › peer-review

3 Citations (SciVal)

118 Downloads (Pure)

Abstract

A new 4′-(3,4-dimethoxyphenyl)-2,2′:6′,2″-terpyridine (DmP-TerPy) ligand has been synthesized and utilized as the ancillary ligand in conjunction with the primary antenna ligand 4,4,4-trifluoro-1-phenyl-1,3-butanedione (btfa) to develop a new nine coordinate red emitting ternary Eu(III) complex, [Eu(btfa) ₃(DmP-TerPy] (Eu1). Eu1 was characterised by analytical and spectroscopic techniques and its photophysical properties were analysed. The experimental results were complemented by computational methods, namely, density functional theory (DFT), time-dependent density functional theory (TD-DFT), and the Lanthanide Luminescence Software Package (LUMPAC), to establish the photoluminescence (PL) properties of the sensitised Eu(III) complex and the energy transfer (EnT) processes involved. Finally, to test the application of Eu1 as a narrow band red emitter, the material was used as the emitting layer (EML) in a multi-layered host-guest device to fabricate highly monochromatic red organic light-emitting diodes (R-OLED).

Original language	English
Article number	116740
Journal	Journal of Photochemistry and Photobiology A Chemistry
Volume	472
Early online date	29 Aug 2025
DOIs	https://doi.org/10.1016/j.jphotochem.2025.116740
Publication status	Published - 1 Mar 2026

Data Availability Statement

The data that support the findings of this study are available in the Supporting Information

Funding

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/22/01) for funding. JDLD appreciates the financial support from the Brazilian funding agencies CAPES, CNPq (421733/2018-7) and FACEPE (APQ-0675-1.06/14). WFO thanks CAPES for a master's research scholarship. LZ is grateful for the financial aid from the National Natural Science Foundation of China (62174160). WYW thanks the Hong Kong Research Grants Council (PolyU 15305320), Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials (2019B121205002), the CAS-Croucher Funding Scheme for Joint Laboratories (ZH4A), Research Institute for Smart Energy (CDAQ) and the Endowed Professorship in Energy from Miss Clarea Au (847S) both from the Hong Kong Polytechnic University for the financial support. PRR is grateful to the Engineering and Physical Sciences Research Council for continued research funding (Grant: EPSRC EP/K004956/1).

Funders	Funder number
Engineering and Physical Sciences Research Council	EP/K004956/1

Keywords

4′-(3,4-dimethoxyphenyl)-2,2′:6′,2″-terpyridine
Energy transfer mechanism
Narrow bandwidth
OLEDs
β-Diketone

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Physics and Astronomy

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10.1016/j.jphotochem.2025.116740

Manuscript JPP Author Accepted VersionAccepted author manuscript, 1.62 MBLicence: CC BY

Cite this

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title = "Photo- and electro-luminescence studies of a new nine-coordinate ternary Eu(III) complex",

abstract = "A new 4′-(3,4-dimethoxyphenyl)-2,2′:6′,2″-terpyridine (DmP-TerPy) ligand has been synthesized and utilized as the ancillary ligand in conjunction with the primary antenna ligand 4,4,4-trifluoro-1-phenyl-1,3-butanedione (btfa) to develop a new nine coordinate red emitting ternary Eu(III) complex, [Eu(btfa) 3(DmP-TerPy] (Eu1). Eu1 was characterised by analytical and spectroscopic techniques and its photophysical properties were analysed. The experimental results were complemented by computational methods, namely, density functional theory (DFT), time-dependent density functional theory (TD-DFT), and the Lanthanide Luminescence Software Package (LUMPAC), to establish the photoluminescence (PL) properties of the sensitised Eu(III) complex and the energy transfer (EnT) processes involved. Finally, to test the application of Eu1 as a narrow band red emitter, the material was used as the emitting layer (EML) in a multi-layered host-guest device to fabricate highly monochromatic red organic light-emitting diodes (R-OLED).",

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author = "Rashid Ilmi and Xiaoyang Xia and Oliveira, \{Willyan F.\} and Dutra, \{Jos{\'e} D.L.\} and Liang Zhou and Wai-Yeung Wong and Paul Raithby and Khan, \{Muhammad S.\}",

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AU - Ilmi, Rashid

AU - Xia, Xiaoyang

AU - Oliveira, Willyan F.

AU - Dutra, José D.L.

AU - Zhou, Liang

AU - Wong, Wai-Yeung

AU - Raithby, Paul

AU - Khan, Muhammad S.

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AB - A new 4′-(3,4-dimethoxyphenyl)-2,2′:6′,2″-terpyridine (DmP-TerPy) ligand has been synthesized and utilized as the ancillary ligand in conjunction with the primary antenna ligand 4,4,4-trifluoro-1-phenyl-1,3-butanedione (btfa) to develop a new nine coordinate red emitting ternary Eu(III) complex, [Eu(btfa) 3(DmP-TerPy] (Eu1). Eu1 was characterised by analytical and spectroscopic techniques and its photophysical properties were analysed. The experimental results were complemented by computational methods, namely, density functional theory (DFT), time-dependent density functional theory (TD-DFT), and the Lanthanide Luminescence Software Package (LUMPAC), to establish the photoluminescence (PL) properties of the sensitised Eu(III) complex and the energy transfer (EnT) processes involved. Finally, to test the application of Eu1 as a narrow band red emitter, the material was used as the emitting layer (EML) in a multi-layered host-guest device to fabricate highly monochromatic red organic light-emitting diodes (R-OLED).

KW - 4′-(3,4-dimethoxyphenyl)-2,2′:6′,2″-terpyridine

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KW - Narrow bandwidth

KW - OLEDs

KW - β-Diketone

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JO - Journal of Photochemistry and Photobiology A Chemistry

JF - Journal of Photochemistry and Photobiology A Chemistry

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Photo- and electro-luminescence studies of a new nine-coordinate ternary Eu(III) complex

Abstract

Data Availability Statement

Funding

Keywords

ASJC Scopus subject areas

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