Article
Chemistry, Multidisciplinary
Changfeng Si, Tao Wang, Abhishek Kumar Gupta, David B. Cordes, Alexandra M. Z. Slawin, Jay S. Siegel, Eli Zysman-Colman
Summary: Corannulene-derived materials have been extensively studied in energy storage and solar cells. However, their potential as emitters in light-emitting sensors and OLEDs has been largely unexplored. In this study, a family of multi-D-A motifs, TCzPhCor, TDMACPhCor, and TPXZPhCor, were developed by using corannulene as the acceptor and different donors. These materials exhibit multiple phosphorescence and show promise in temperature sensing and OLED applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Guangzhao Lu, Zheng-Guang Wu, Ruixia Wu, Xiaosong Cao, Liang Zhou, You-Xuan Zheng, Chuluo Yang
Summary: This study successfully synthesized two green chiral iridium(III) isomers using R-camphor as a chiral resource, which exhibited excellent performance in circularly polarized phosphorescent organic light-emitting diodes. By novel device engineering, the dissymmetry factor of circularly polarized electroluminescence signal was significantly boosted by one order of magnitude.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Zhao-Yi Wang, Li-Yi Zhang, Liang-Jin Xu, Lin-Xi Shi, Jin-Yun Wang, Zhong-Ning Chen
Summary: By choosing appropriate ligands, highly efficient phosphorescent systems were achieved, and highly emissive Pt-Au heteronuclear complexes were successfully prepared. Utilizing these complexes with significant Pt-Au interactions as phosphorescent dopants, excellent performance of solution-processed OLEDs was achieved.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Kiun Cheong, Unhyeok Jo, Wan Pyo Hong, Jun Yeob Lee
Summary: A blue tetradentate Pt(II) complex named Pt-tmCyCz is developed by introducing a cycloalkyl unit fused to carbazole to improve the rigidity and bulkiness of the complex. The complex exhibits high external quantum efficiency, narrow full width at half maximum, and stable spectrum in OLEDs.
Article
Chemistry, Applied
Rubing Bai, Pei Wang, Xianwen Meng, Lei He
Summary: By controlling the oxadiazole/triazine type counter-anions, sky-blue-emitting cationic iridium complexes with electron-trapping effects have been developed for highly efficient solution-processed organic light-emitting diodes (OLEDs). These complexes exhibit significant enhancement in device performance compared to the reference complex, with the highest peak current efficiency and external quantum efficiency reported for blue OLEDs using cationic iridium complexes.
Article
Chemistry, Applied
Mingxing Tian, Renyou Yu, Mengzhen Chen, Lei He
Summary: This study introduces efficient fluorine-free, blue-emitting cationic iridium complexes for OLED applications. The complexes exhibit high phosphorescent efficiencies and pure blue color in both solution and doped films. They show potential for use in optoelectronic devices due to their high-performance blue emission properties.
Article
Chemistry, Multidisciplinary
Zijian Chen, Mengke Li, Qing Gu, Xiaomei Peng, Weidong Qiu, Wentao Xie, Denghui Liu, Yihang Jiao, Kunkun Liu, Jiadong Zhou, Shi-Jian Su
Summary: By introducing a donor-acceptor skeleton with a phenoxaselenine donor, nonaromatic amine donor containing compounds with high phosphorescence quantum yield and short phosphorescence lifetime are developed in amorphous films. The heavy-atom effect of selenium enhances the spin-orbit coupling, and the donor-acceptor skeleton further boosts it, while the rigid molecular structure suppresses nonradiative energy dissipation. Consequently, a record-high external quantum efficiency of 19.5% is achieved for the organic light-emitting diode based on PXSeDRZ. Voltage-dependent color-tunable emission and single-molecule white emission are also realized. These results shed light on the broad prospects of purely organic phosphorescence materials as highly efficient OLED emitters especially for potential charming lighting applications.
Article
Multidisciplinary Sciences
Young-Hoon Kim, Yaxin Zhai, Haipeng Lu, Xin Pan, Chuanxiao Xiao, E. Ashley Gaulding, Steven P. Harvey, Joseph J. Berry, Zeev Valy Vardeny, Joseph M. Luther, Matthew C. Beard
Summary: Traditional optoelectronic approaches rely on both electrical and magnetic fields to control spin, charge, and light, while the use of chiral-induced spin selectivity (CISS) technology allows for the fabrication of a spin-LED that operates at room temperature without the need for magnetic fields or ferromagnetic contacts.
Article
Materials Science, Multidisciplinary
Chan Hee Ryu, Seung Chan Kim, Mingi Kim, Sanghee Yi, Jun Yeob Lee, Kang Mun Lee
Summary: This study reports the synthesis of two novel tetradentate Pt(II) complexes and their application as blue phosphorescent emitters in OLED devices. These complexes exhibit intense blue emission, high phosphorescent quantum efficiencies, and thermal stabilities. The devices fabricated using these complexes show outstanding performance and electroluminescent colors.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Claire Arneson, Xinjing Huang, Stephen R. Forrest
Summary: This study demonstrates a method for achieving tunable white light through the side-by-side positioning of monochromatic blue and yellow phosphorescent OLED stripes using a high-resolution mechanical peel-off patterning method. The results show a peak luminous power efficiency of 17.1 lm W-1 and an external quantum efficiency of 11.8%, as well as the ability to adjust the color temperature and color rendering index of the light source. The peel-off technique used in this method ensures a comparable device lifetime to conventionally patterned devices.
Article
Chemistry, Applied
Jisu Kang, Seung Chan Kim, Jun Yeob Lee, Youngjin Kang
Summary: Blue phosphorescent Pt(II) complexes with different substituents were designed, synthesized and characterized. The effects of substituents on intermolecular interactions, optical properties and electroluminescence were investigated. The Pt(II) complexes exhibited bright blue emission and red-shifted bluish-green emissions, and the electronic transitions were attributed to different charge transfer mechanisms. Phosphorescent organic light-emitting diodes were successfully fabricated using these Pt(II) complexes as dopants.
Article
Chemistry, Applied
Ke Zhang, Xianwen Meng, Lei He
Summary: This study reports a series of new phosphorescent cationic iridium complexes and their application in solution-processed OLEDs with high-efficiency electroluminescence. Particularly, complex 2 exhibits the best performance in green-blue OLEDs, with high external quantum efficiency and small efficiency roll-off.
Article
Materials Science, Multidisciplinary
Zhenhua Wen, Yulin Xu, Xiu-Fang Song, Jingsheng Miao, Youming Zhang, Kai Li, Chuluo Yang
Summary: A series of half-lantern dinuclear platinum(II) complexes with a cofacially aligned structure featuring short Pt-Pt distances are reported, showing high-efficiency deep red phosphorescence. The deep red devices based on these complexes exhibit maximum external quantum efficiencies (EQEs) up to 21.8% and an operational lifetime (LT85) of 334 h at a luminance of 1000 cd m(-2), indicating their potential practical use.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Gyu Jin Choi, Jeong Won Ryu, Ji-Young Jeong, Tae-Jin Je, Dong Ki Yoon, Jin Seog Gwag
Summary: The study shows that combining an organic light-emitting display (OLED) device with an advanced optical film can achieve highly enhanced light extraction and low ambient light reflection without the need for a polarizer. The optical efficiency of the OLED device with the proposed film has been significantly improved compared to a polarizer-based OLED device, with external light reflection reduced to approximately 10%. Experimental data confirms that the film for enhancing optical efficiency (FEOE) improves the overall optical efficiency of OLED devices, making FEOE-based OLEDs of significant interest in materials science and display devices.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Inorganic & Nuclear
Hui Liu, Kun Zhang, Peng-Fu Gao, Jia-Hua Luo, Yu-Ying Jiang, Meng-Shu Zhou, Ting Li, Xue-Li Zhu, Hong-Ru Fu
Summary: Two Cd-based supramolecular coordination polymers with multiple luminescence emissions, including fluorescence and time- and temperature-dependent ultralong phosphorescence, have been successfully synthesized. One of the compounds exhibits a long-lived afterglow under ambient conditions, while the other shows nearly pure white-light emission. This is the first example of a luminescent coordination polymer with single-phase white-light emission and color-evolution RTP.
INORGANIC CHEMISTRY
(2022)
Article
Food Science & Technology
Hui Li, Yanxiong Pan, Zhongyu Yang, Jiajia Rao, Bingcan Chen
Summary: This review article discusses the use of SDSL-EPR technology to reveal the structure and dynamics of food proteins on an atomic level, emphasizing the importance of protein structure and dynamics for functionality. Overall, SDSL-EPR can help improve the understanding of the relationship between structure and functionality of food proteins.
TRENDS IN FOOD SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Applied
Hui Li, Yanxiong Pan, Chun Li, Zhongyu Yang, Jiajia Rao, Bingcan Chen
Summary: This study fabricated dual-functional conjugates that can simultaneously suppress lipid oxidation and microorganism growth, and found that the mixing ratio of Lys and GA determines the performance of the conjugates. The maximum antioxidant activity and antibacterial performance of the conjugates is achieved when Lys:GA molar ratio is 1:112.
Article
Chemistry, Applied
Jianxiong Yue, Zhenbao Zhu, Jianhua Yi, Hui Li, Bingcan Chen, Jiajia Rao
Summary: This study investigated the impact of dihydric alcohol chain length on the structure of deep eutectic solvents (DESs) and the extraction of oat proteins. The results showed that certain compositions of DESs can effectively extract oat proteins from flour in one step. The composition of DESs and the pH of the environment played a significant role in the structural and physicochemical properties of oat proteins. Specifically, a hydrated DES composed of food-grade compounds demonstrated great potential for the one-step biorefinery of oat proteins.
Article
Chemistry, Applied
Hui Li, Yanxiong Pan, Zhongyu Yang, Jiajia Rao, Bingcan Chen
Summary: In this study, a conjugate with both emulsifying properties and antioxidant stability was successfully prepared by grafting gentisic acid on beta-lactoglobulin. The antioxidant capacity of the conjugate even exceeded that of the raw beta-lactoglobulin, suggesting its potential use as an advanced emulsifier.
FOOD HYDROCOLLOIDS
(2022)
Article
Nanoscience & Nanotechnology
Drew Jordahl, Zoe Armstrong, Qiaobin Li, Runxiang Gao, Wei Liu, Kelley Johnson, William Brown, Allison Scheiwiller, Li Feng, Angel Ugrinov, Haiyan Mao, Bingcan Chen, Mohiuddin Quadir, Hui Li, Yanxiong Pan, Zhongyu Yang
Summary: Metal-organic frameworks (MOFs) can immobilize enzymes through co-crystallization or diffusion, and biomineralization provides an effective method for enzyme immobilization under aqueous conditions. The stability of enzyme@MOF composites depends on the metal-ligand combinations and pH values. This study demonstrates the potential of expanding the library of metal-ligand selection for customized encapsulation of enzymes based on their stability, functionality, and optimal pH.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Applied
Hui Li, Yanxiong Pan, Yang Lan, Zhongyu Yang, Jiajia Rao, Bingcan Chen
Summary: Deciphering the molecular interaction mechanism of protein-polyphenol complexes is crucial for designing and controlling their functional properties. In this study, the interaction between T4 lysozyme and rosmarinic acid was investigated using electron paramagnetic resonance spectra. The results showed that the interaction process is from order to disorder, and the complexes formed quasi-spherical colloidal particles. When the ratio of T4 lysozyme to rosmarinic acid was 1:1, the complexes exhibited optimized enzymatic and antioxidant dual-functionalities. However, excess addition of rosmarinic acid led to decreased enzymatic and antioxidant activities due to burial of the catalytic active site and bioactive hydroxyl groups.
Article
Chemistry, Multidisciplinary
Yanxiong Pan, Qiaobin Li, Wei Liu, Zoe Armstrong, Austin MacRae, Li Feng, Charles McNeff, Pinjing Zhao, Hui Li, Zhongyu Yang
Summary: Confining enzymes in well-shaped MOF compartments is a promising approach to mimic the cellular environment of enzymes and determine enzyme structure-function relationship therein. However, enzymes can also be confined in unstructured spaces close to their outlines under cellular crowding, which is necessary to study for a better understanding of enzymes in their physiological environments. Creating compartments close to enzyme outlines and probing enzyme structural information therein is challenging.
Article
Nanoscience & Nanotechnology
Qiaobin Li, Zoe Armstrong, Austin MacRae, Angel Ugrinov, Li Feng, Bingcan Chen, Ying Huang, Hui Li, Yanxiong Pan, Zhongyu Yang
Summary: This study overcomes the challenges of protease instability and real-time monitoring of catalytic processes by using metal-organic materials (MOMs) and site-directed spin mass spectrometry (MS) approaches. The immobilization of trypsin on Ca-MOMs enhances its catalytic efficiency and stability, allowing for real-time monitoring of the proteolytic process. This work demonstrates the potential of MOMs for enhancing the catalytic performance of proteases.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Applied
Hui Li, Yanxiong Pan, Chun Li, Zhongyu Yang, Jiajia Rao, Bingcan Chen
Summary: This study aims to use Electron Paramagnetic Resonance (EPR) spectroscopy to understand the relationship between protein-phenolic conjugation, final functionalities, and the underlying structural basis of antioxidant and antibacterial dual functionalities. Lysozyme (Lys) was conjugated with two natural phenolic acids, rosmarinic acid (RA) and gentisic acid (GA), and the conjugates showed different molecular features. The conjugation with RA significantly improved the antioxidant stoichiometry of Lys, but also mitigated its enzymatic and antibacterial activities due to structural changes. The study also explored the structural basis of polyphenol conjugation using site-directed spin labeling (SDSL)-EPR.
Article
Chemistry, Applied
Hui Li, Jiajia Rao, Bingcan Chen
Summary: Pectin modification can alter its functional properties and lead to new applications. Tyramine modified pectin exhibited improved solubility, amphiphilicity, and antioxidant activity. The gels formed by Tyr modified pectin had good viscoelasticity but reduced elasticity and strength compared to the native pectin gel.
FOOD HYDROCOLLOIDS
(2023)
Article
Energy & Fuels
Fengchao Zha, Min Shi, Hui Li, Jiajia Rao, Bingcan Chen
Summary: By encapsulating lipase into metal-organic frameworks, the affinity between the enzyme and substrate is improved, leading to higher biodiesel yield and substrate selectivity. The biocomposites also show reasonable reusability.
Meeting Abstract
Chemistry, Applied
Hui Li, Bingcan Chen
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Yanxiong Pan, Xiaoliang Wang, Hui Li, Junyu Ren, Yin Zhang, Drew Jordahl, Isabelle Schuster, Jasmin Farmakes, Heedeok Hong, Zhongyu Yang, Shengqian Ma
Summary: The study demonstrates that the impact of channel properties on protein orientation during transfer can be a multi-step process, and the use of nanoporous materials can help elucidate the protein transfer mechanism. This research provides the first structural insight into the relative orientation changes of proteins in different compartments, which is significant for the rational design of synthetic materials and mimicking cellular compartments.
CELL REPORTS PHYSICAL SCIENCE
(2021)
Article
Biochemical Research Methods
Yanxiong Pan, Hui Li, Qiaobin Li, Mary Lenertz, Isabelle Schuster, Drew Jordahl, Xiao Zhu, Bingcan Chen, Zhongyu Yang
Summary: This study presents an effective protocol for determining the orientation and dynamics of enzymes in MOFs/COFs using site-directed spin labeling and electron paramagnetic resonance spectroscopy, which can be applied to other enzymes as well.
Article
Chemistry, Multidisciplinary
Yanxiong Pan, Hui Li, Mary Lenertz, Yulun Han, Angel Ugrinov, Dmitri Kilin, Bingcan Chen, Zhongyu Yang
Summary: This study presents a green enzyme@MOF/MOM platform derived from lignin, which allows for immobilization of enzymes without limitations on size or isoelectric point. The co-precipitation of DDVA and low-toxicity metals Ca2+ and Zn2+ results in stable enzyme composites, with Zn-DDVA MOMs showing higher enzyme restriction than Ca-DDVA MOMs. The synthesis method has minimal environmental impact, non-toxic products, and potential applications in enzyme delivery for nutrition or biomedical purposes.
Article
Chemistry, Inorganic & Nuclear
Guojun Hu, Ziyue Deng, Yanwei Wang, Dan Yuan, Yong Zhang, Yingming Yao
Summary: A series of rare-earth metal complexes were synthesized and used as efficient initiators for the polymerization of trimethylene carbonate (TMC) and (L)-lactide ((L)-LA).
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Van Ha Nguyen, John H. K. Yip
Summary: In this study, eight PtII-azulene complexes were synthesized to investigate the effect of metalation on the electronic structures, spectroscopy, and luminescence of organic chromophores. The results showed that the attachment of Pt substituents to azulene affected the HOMOs, LUMOs, and luminescence properties. The study provides insights into the role of metalation in modifying the properties of organic chromophores.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Moon Kedia, Virender Singh, Bhaskaran Shankar, Malaichamy Sathiyendiran
Summary: This study synthesized two types of neutral binuclear metallocycles using a one-pot solvothermal method and characterized their structures. The analysis revealed that these complexes adopt a binuclear heteroleptic cyclic architecture and belong to phosphine oxide donor (P=O)-based supramolecular coordination cyclic complexes.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Radhey S. Srivastava
Summary: This study demonstrates the effectiveness of zero-valent elements as reductants for the deoxydehydration reaction of polyols catalyzed by ONO-pincer ligated molybdenum dioxo. The insolubility and easy separability of the reductants and their oxidized products during the reaction are emphasized. Additionally, the choice of ligand has an impact on the catalytic performance of the reaction.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Hao Zhou, Yajun Sun, Li Deng, Weiran Yang, Yuehui Li
Summary: Efficient Ru-catalyzed hydrogenation of aldehydes was achieved using carbazole-derived phosphine ligands, with the crucial role of N-H moiety in promoting the catalytic reaction. The method was successfully applied in the Co/Ru-catalyzed hydroformylation process, resulting in the production of long-chain alcohols with excellent yields.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Theodor Danescu, Alexandru Lupan, Radu Silaghi-Dumitrescu, R. Bruce King
Summary: The structures and energies of complexes containing (Me2C2N2P)2Ru2(CO)n and (Me2C2N2P)2Fe2(CO)n have been studied. Low-energy structures are characterized by the presence of bridging diazaphospholyl rings, while higher-energy structures involve different ligand structures.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Savannah C. Kapper, Aamani Ponnekanti, Jonas Schaab, Tian-yi Li, Christine L. Chung, Gael Ung, Peter I. Djurovich, Mark E. Thompson
Summary: Organometallic iridium complexes with two cyclometalated ligands and one bis-oxazoline derived ancillary ligand were studied. These complexes have emission spanning across the visible and near-ultraviolet region, with moderate to high photoluminescence quantum yields. The (ppy)2Ir(BOX-CN) complexes were resolved into Delta- and Lambda-diastereomers based on solubility differences.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Zahra Karimi Sangari, Hossein Naeimi
Summary: In this research, a nanostructured CoCuFe2O4 catalyst was prepared using a brief and useful synthetic strategy. This catalyst was used for synthesizing 1,2,4,5-tetrasubstituted imidazole derivatives under ultrasonic irradiation. The approach offers advantages such as high efficiency, short reaction times, simplicity of the reaction medium, accelerated reaction rates, and easier separation and purification of products.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Rukhsana Gul, Wajid Munir, Ebraheem Abdu Musad Saleh, Shaukat Shujah, Muhammad Sirajuddin, Saira Tabassum, Khalil Ur Rehman, Dilfaraz Khan, Sameerah I. Al-Saeedi, Ehab A. Abdelrahman
Summary: Two new Schiff base ligands were synthesized and used to form copper, nickel, and cobalt complexes. The synthesized compounds were characterized and screened for various biological activities. The metal complexes showed better activities in antibacterial, antifungal, antidiabetic, and antioxidant assays.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Review
Chemistry, Inorganic & Nuclear
Ahsan Nazir, Pengwei Huo, Ameena Tur Rasool
Summary: This review explores the potential of g-C3N4-based S-scheme heterojunctions in addressing environmental issues. It summarizes the mechanism and preparation techniques of S-scheme heterojunctions based on g-C3N4, and presents recent studies on their applications in pollutant removal, CO2 reduction, hydrogen production, and bacterial disinfection. The review concludes with an outlook on future challenges for g-C3N4-based S-scheme heterojunctions.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Francois Mazars, Koffi Senam Etse, Guillermo Zaragoza, Lionel Delaude
Summary: The activity of three Pd-PEPPSI catalyst precursors with N-heterocyclic carbene (NHC) ligands derived from caffeine and theophylline in Mizoroki-Heck reactions was tested. The results showed that the catalysts achieved high conversions and yields, especially in the presence of electron-withdrawing substituents.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Bo-Han Wu, Xue Zhou, Lin Liu, Zheng-Bo Han
Summary: Researching carbon dioxide removal from flue gas and natural gas is crucial. Metal-organic frameworks (MOFs) are commonly used in adsorption due to their high surface area, porosity, and chemical properties. An ultra-microporous MOF CPM-20(Co) with mixed ligand was synthesized using inexpensive ligands. The material exhibited high selectivities and low regenerative energy, making it a promising option for CO2 separation in industries.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)