Article
Biochemistry & Molecular Biology
Felipe S. M. Canisares, Alessandra M. G. Mutti, Edy F. Santana, Vytor C. Oliveira, Dalita G. S. M. Cavalcante, Aldo E. Job, Ana M. Pires, Sergio A. M. Lima
Summary: Two red-emitting heteroleptic iridium(III) complexes were synthesized and their photophysical and biological properties were analyzed. The complexes showed high emission quantum yields and potential as biological markers. They exhibited low cytotoxicity and were internalized by cells, staining the cytoplasm region.
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2022)
Article
Chemistry, Physical
Lianna Chen, Zhiyuan Qin, Shuming Chen
Summary: In this study, a new method has been developed to achieve high-resolution pixelated emission by controlling the thickness of transparent electrodes, resulting in a color-converting cavity that can selectively convert unpatterned quantum-dot white emission into saturated red, green, and blue emission. This method enables ultrahigh density red, green, and blue emission with a resolution of approximately 1700 pixels per inch, as well as achieving a color gamut of 111% NTSC.
Article
Materials Science, Multidisciplinary
Zhen Zhang, Peng Wu, Ke Wang, Hong Lin, Eduard Spuling, Rongrong Xia, Youjun Wu, Jin Cao, Jianhua Zhang, Bin Wei, Stefan Braese, Zixing Wang
Summary: This study reports the development of white organic light-emitting diodes (WOLEDs) based on platinum complexes with tunable correlated color temperature (CCT). By methylating the ligand, the interaction between Pt(II) complexes was regulated, resulting in adjustable emission and CCT of the WOLEDs. High device performances with high external quantum efficiency and low efficiency roll-offs were achieved using exciplex as a host. Moreover, the CCT of the WOLEDs could be tuned by changing the driving voltages, matching with the daylight spectrum.
ACS MATERIALS LETTERS
(2023)
Review
Chemistry, Multidisciplinary
Filippo Monti, Andrea Baschieri, Letizia Sambri, Nicola Armaroli
Summary: Iridium(III) complexes play a significant role in photochemistry and photophysics due to their stability and emissive properties. The heavy-atom effect of iridium promotes singlet-triplet transitions, with the complexes exhibiting metal-centered, ligand-centered, or charge transfer properties in the excited state. The design of ligands allows for fine tuning of the electronic properties, making iridium(III) complexes a valuable tool in optoelectronic devices.
ACCOUNTS OF CHEMICAL RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Wentao Li, Baowen Wang, Tiezheng Miao, Jiaxiang Liu, Xingqiang Lu, Guorui Fu, Linxi Shi, Zhongning Chen, Pengcheng Qian, Wai-Yeung Wong
Summary: The development of high-efficiency NIR-emitting Ir(III)-complex-based phosphors for reliable NIR-OLEDs remains a challenge. A molecule-engineered approach was developed to create C-1-symmetric Ir(III)-complexes with good NIR-luminescent efficiency. The preferentially horizontal orientation of the emitting dipoles contributes to highly efficient NIR-OLEDs with light out-coupling.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Seungmin Myeong, Bumsoo Chon, Samir Kumar, Ho-Jin Son, Sang Ook Kang, Sungkyu Seo
Summary: This study reports a QD photolithography technique using a custom-developed QD photoresist, which successfully fabricates various QD micro-patterns and holds great promise in various fields of QD-based applications.
NANOSCALE ADVANCES
(2022)
Article
Chemistry, Applied
Hui-Ting Mao, Yang Yang, Kai-Yue Zhao, Ying-Chen Duan, Wei-Lin Song, Guo-Gang Shan, Zhong-Min Su
Summary: The emission color of Ir(III) complexes can be adjusted by changing cyclometalated ligands, leading to the successful construction of a strong blue-emitting complex. Additionally, all complexes exhibit remarkable and reversible mechanochromic luminescence behavior upon mechanical grinding.
Article
Chemistry, Multidisciplinary
Svetlana Eliseeva, Tu N. Nguyen, Jeff W. Kampf, Evan R. Trivedi, Vincent L. Pecoraro, Stephane Petoud
Summary: This study reports a new family of Zn(16)Ln(HA)(16) metallacrowns with outstanding luminescence properties in the near-infrared (NIR) and suitability for cell imaging. The authors synthesized MCs with two new hydroximate ligands and found that they efficiently sensitize the NIR emissions of Yb-III, Er-III, and Nd-III. The photophysical properties and quantum yields of the MCs were analyzed, providing valuable information for creating MCs suitable for NIR optical imaging.
Article
Chemistry, Inorganic & Nuclear
Emiliano Martinez-Vollbert, Charles Ciambrone, William Lafargue-Dit-Hauret, Camille Latouche, Frederique Loiseau, Pierre-Henri Lanoe
Summary: In this study, a new family of cationic iridium(III) complexes with modified emission properties and photoluminescence quantum yield were investigated by introducing different substituents. A switch of the lowest triplet excited state was observed. The experimental and theoretical results showed good agreement, demonstrating the potential of these complexes as emitting materials.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Athithan Maheshwaran, Ho-Yeol Park, Jungmin Choi, Kyungmin Sung, Yeongju Do, Hyungjin Park, Hyein Kim, Myungkwan Song, Sung-Ho Jin
Summary: Two new highly efficient green emitting heteroleptic Ir(III) complexes, Ir-HT and Ir-ET, designed for solution-processed phosphorescence organic light-emitting diodes (PHOLEDs), showed excellent performance with multifunctional ancillary ligands.
ORGANIC ELECTRONICS
(2021)
Article
Chemistry, Inorganic & Nuclear
Jianbang Zhou, Pengyun Chen, Junhao Li, Mingming Yang, Wei Jiang, Qiuhong Zhang, Haiyong Ni, Jiansheng Huo
Summary: In this study, a series of Cr3+-activated near-infrared (NIR) phosphors with broadband emission and tunable luminescence properties were designed and prepared. The luminescence characteristics of the materials could be controlled by adjusting the crystal field strength. One of the phosphors exhibited high luminous efficiency even at high temperature, and the thermal stability was attributed to the structural confinement and the electron-phonon coupling effect.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Physical
Qiang Zhang, Xicheng Wang, Xiaopeng Zhou, Yuhua Wang
Summary: In this study, Rb2Sr1-yCayP2O7:xEu(2+) solid solutions with yellow-orange color-tunable luminescence were designed for potential applications in WLEDs, showing high efficiency and good performance. By combining BAM:Eu2+ and Rb2SrP2O7:0.5% Eu2+ phosphors with a 380 nm n-UV chip, a WLED device was successfully fabricated to emit white light with good performance.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Optics
Anjli Hooda, Anuj Dalal, Kapeesha Nehra, Pawan Kumar, Devender Singh, Rajender Singh Malik, Sumit Kumar
Summary: The synthesis of four red emissive complexes of europium based on Hfodo and L is described. Luminescence analysis confirmed the intense red emission of the complexes in both powder and solution form. The colorimetric parameters calculated from emission spectral data affirm the usefulness of these complexes in displays and laser diodes.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Robert M. Edkins, Yu-Ting Hsu, Mark A. Fox, Dmitry Yufit, Andrew Beeby, Ross J. Davidson
Summary: The synthesis and comparison of Bis-heteroleptic and tris-heteroleptic iridium complexes were studied. Diversified intermediate complexes with different emission and redox properties were successfully synthesized using a chemistry-on-the-complex approach. This convenient synthetic method simplifies the access to Ir(L-a)(L-b)(acac) complexes with varying properties.
Article
Chemistry, Inorganic & Nuclear
Vadim Adamovich, Llorenc Benavent, Pierre-Luc T. Boudreault, Miguel A. Esteruelas, Ana M. Lopez, Enrique Onate, Jui-Yi Tsai
Summary: Two new phosphorescent red iridium(III) emitters have been successfully synthesized, including a carbonyl derivative and an acetylacetonate compound. The tetradentate 6e-donor ligand of these complexes is formed by two different bidentate units, and the link between the bidentate units reduces the number of possible stereoisomers and allows for noticeable stereocontrol.
INORGANIC CHEMISTRY
(2021)
