Article
Multidisciplinary Sciences
Kosuke Yasuji, Tomo Sakanoue, Fumihiro Yonekawa, Katsuichi Kanemoto
Summary: The recombination between electrons and holes in electroluminescence processes has never been directly evaluated. In this study, the operation dynamics of light-emitting electrochemical cells were visualized with spectroscopic techniques, leading to a rapid device evaluation.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Lorenzo Mardegan, Chris Dreessen, Michele Sessolo, Daniel Tordera, Henk J. Bolink
Summary: The study investigated the use of a hyperbranched polymer blended with a Li salt as an electrolyte in PLECs, achieving excellent electroluminescent properties with high stability, long lifetime, peak efficiency, and short turn-on times. Additionally, the study examined the stability of the devices through measuring the photoluminescence during electroluminescent operation, showing quenching and immediate recovery of photoluminescence in vertically stacked devices.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Renyou Yu, Yongjun Song, Mengzhen Chen, Lei He
Summary: A series of green to blue-green-emitting cationic iridium complexes free of sp(2) C-F bonds are designed and synthesized with promising emission performance. The complexes exhibit different luminescent behaviors in solution and solid state, with theoretical calculations revealing their emission mechanisms.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Physical
Aditya Mishra, Stephen DiLuzio, Masoud Alahbakhshi, Austen C. Adams, Melanie H. Bowler, Jiyoung Moon, Qing Gu, Anvar A. Zakhidov, Stefan Bernhard, Jason D. Slinker
Summary: By utilizing a CsPbBr3 perovskite host and a novel ionic iridium complex guest, along with a polyelectrolyte, efficient light-emitting electrochemical cells (PeLECs) with significantly improved performance and enhanced luminance efficiency were achieved in this study.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Shiyu Hu, Hung-Wei Yeh, Jun Gao
Summary: Polymer light-emitting electrochemical cells (PLECs) using silver trifluoromethanesulfonate (Ag triflate) salt exhibit high luminance and efficiency, activating over 100 times faster than other optimized cells. The high performance is attributed to the partial chemical doping of the light-emitting polymer by silver cations, providing a new approach for designing high-performance mixed conductor devices.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Multidisciplinary
Matthias Diethelm, Andrius Devizis, Wei-Hsu Hu, Tao Zhang, Roman Furrer, Camilla Vael, Sandra Jenatsch, Frank Nueesch, Roland Hany
Summary: The study identified that charge traps in semiconducting polymers present important intrinsic performance limitations for PLECs, similar to those for PLEDs.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
J. H. Park, A. K. Harit, C. H. Jang, J-E Jeong, H. Y. Woo, M. H. Song
Summary: This study successfully demonstrated the fabrication of a green-emitting PeLED with excellent performance by incorporating a specific conjugated polyelectrolyte MPS2-TEA into the perovskite solution. The perovskite films with MPS2-TEA showed improved optical properties and lower defect density compared to the pristine films.
MATERIALS TODAY ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Hao Yan, Jessica Wade, Li Wan, Sooncheol Kwon, Matthew J. Fuchter, Alasdair J. Campbell, Ji-Seon Kim
Summary: This study demonstrates the use of a small amount of chemically modified electrochemical doping agent to improve the performance of circularly polarized polymer light-emitting diodes. By controlling unbalanced charge transport and energetics, the efficiency of charge injection and device performance is improved.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Eun Young Park, Da Hwan Lee, Thi Na Le, Chol-Min Shin, Jihoon Lee, Min Chul Suh
Summary: The newly designed host material shows excellent performance in green phosphorescent organic light-emitting diodes, achieving a maximum lifetime of 1300 hours and a high current efficiency of up to 66.3 cd A(-1). The design of the hole dominant material effectively reduces electron accumulation at the HTL and EML interface, leading to improved device performance.
Article
Materials Science, Multidisciplinary
Lorenzo Mardegan, Abhyuday Paliwal, Kassio P. S. Zanoni, Daniel Tordera, Henk J. Bolink
Summary: In this study, a transparent single layer light-emitting electrochemical cell (LEC) based on ionic transition metal complexes was successfully fabricated. The device showed high transparency, high luminance, and long lifetime, making it one of the highest performing single layer transparent electroluminescent devices.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Green & Sustainable Science & Technology
Serpil Tekoglu, Martin Held, Markus Bender, Guan Ni Yeo, Andreas Kretzschmar, Manuel Hamburger, Jan Freudenberg, Sebastian Beck, Uwe H. F. Bunz, Gerardo Hernandez-Sosa
Summary: The study introduces DNA-CTMA as an ion-solvating component in solid polymer electrolytes for the fabrication of light-emitting electrochemical cells, demonstrating stable device performance and optimized efficiency. The research highlights the versatility and potential application of DNA-CTMA in LEC technology.
ADVANCED SUSTAINABLE SYSTEMS
(2021)
Article
Optics
Longshi Rao, Bin Sun, Qing Zhang, Mingfu Wen, Jiayang Zhang, Guisheng Zhong, Ting Fu, Xiaodong Niu, Yong Tang
Summary: This study demonstrates a convenient and environmentally-friendly method for the mass synthesis of solid metal halide perovskite composites with high emission and stability. The composites exhibit improved photostability, thermostability, and polar solvent stability compared to pure metal halide perovskites. The composites are also successfully applied in flexible/stretchable films and high-power white light-emitting diodes, showing great potential for solid-state lighting, lasing, and flexible/stretchable display device applications.
Article
Chemistry, Multidisciplinary
Ryo Yonemoto, Rieko Ueda, Akira Otomo, Yutaka Noguchi
Summary: In a light-emitting electrochemical cell (LEC), electrochemical doping facilitates charge injection and recombination emissions, resulting in high electroluminescence (EL) intensity at low driving voltages. In this study, a nanogap LEC (nano-LEC) consisting of a light-emitting polymer (F8BT) and an ionic liquid on a gold nanogap electrode was developed. The device demonstrated high EL intensity and a low threshold voltage at 300K. At low temperatures (<285K), the delayed components of the current and EL were strongly suppressed, indicating the nano-LEC as a promising approach for molecular-scale current-induced light sources.
Review
Optics
Runnan Yu, Changxiao Li, Biao Zhao, Zhan'ao Tan
Summary: This work reviews the research history of green perovskite light-emitting diodes (GPeLEDs), introduces perovskites of different dimensions, and discusses the common synthesis methods of perovskites. Additionally, strategies to improve the stability and luminous efficiency of GPeLEDs are summarized, including component engineering, phase engineering, ligand engineering, additive engineering, interface engineering, and optical coupling structure strategy. Finally, the development state of GPeLEDs is summarized and future prospects are discussed.
LASER & PHOTONICS REVIEWS
(2023)
Article
Polymer Science
Rene A. Hauyon, Denis Fuentealba, Nancy Pizarro, Maria C. Ortega-Alfaro, Victor M. Ugalde-Saldivar, Patricio A. Sobarzo, Jean Medina, Luis Garcia, Ignacio A. Jessop, Carmen M. Gonzalez-Henriquez, Alain Tundidor-Camba, Claudio A. Terraza
Summary: A new polymer material, p-TPS-DMAC-TRZ, with high thermal stability and good solubility was successfully synthesized, which maintained the fluorescence properties of DAMC-TRZ while improving thermal stability and morphological properties. The results showed that p-TPS-DMAC-TRZ is a promising candidate for use as a light-emitting layer in OLED devices.
Article
Polymer Science
Weijing Zhao, Jie Cao, Fucheng Wang, Fajuan Tian, Wenqian Zheng, Yuqian Bao, Kaiyue Zhang, Zhilin Zhang, Jiawen Yu, Jingkun Xu, Ximei Liu, Baoyang Lu
Summary: This article introduces a method of preparing stretchable, adhesive, and conductive hydrogels by pre-crosslinking Ti3C2Tx nanosheets with polyacrylic acid followed by successive direct ink writing 3D printing. The hydrogel exhibits remarkable mechanical, electrical, and adhesive properties and can be integrated with different substrates with high resolution and stability.
Article
Chemistry, Multidisciplinary
Zequn Shen, Zhilin Zhang, Ningbin Zhang, Jinhao Li, Peiwei Zhou, Faqi Hu, Yu Rong, Baoyang Lu, Guoying Gu
Summary: This research presents a conducting polymer hydrogel strain sensor with high strain and low hysteresis, achieved through a unique microphase semiseparated network design and facile fabrication methods. The strain sensor demonstrates superior performances in terms of stretchability, linearity, cyclic stability, and robustness against mechanical twisting and pressing. The integration and application of the strain sensor with electronic skins show its potentials in various fields such as physiological signal measurement, gesture recognition, and industrial robot control.
ADVANCED MATERIALS
(2022)
Article
Engineering, Environmental
Qi Zhao, Juyang Liu, Zhixin Wu, Xinye Xu, Hude Ma, Jian Hou, Qiaoli Xu, Ruping Yang, Kaiyue Zhang, Mengmeng Zhang, Hanjun Yang, Wenshan Peng, Ximei Liu, Chengchen Zhang, Jingkun Xu, Baoyang Lu
Summary: The article introduces a mechanically robust nanocomposite hydrogel with excellent evaporation performance and demonstrates its potential applications in seawater desalination and wastewater purification.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Zhixin Wu, Qi Zhao, Xiaoyu Luo, Hude Ma, Wenqian Zheng, Jiawen Yu, Zhilin Zhang, Kaiyue Zhang, Kai Qu, Ruping Yang, Nannan Jian, Jian Hou, Ximei Liu, Jingkun Xu, Baoyang Lu
Summary: In this study, we have successfully overcome the challenge of fabricating low-cost yet high-performance visible-near-infrared flexible electrochromic devices (FECDs) by developing a fluorinated polythiophene derivative. The resulting polymer films exhibit intriguing overall electrochromic performances, and the devices fabricated by electropolymerization patterning of such polymers display robust mechanical stability.
CHEMISTRY OF MATERIALS
(2022)
Article
Engineering, Chemical
Qi Zhao, Zhixin Wu, Xinye Xu, Ruping Yang, Hude Ma, Qiaoli Xu, Kaiyue Zhang, Mengmeng Zhang, Jingkun Xu, Baoyang Lu
Summary: A dual network hydrogel of PEDOT:PSS and PAAm has been developed for interfacial solar steam generation, showing excellent evaporation performances and fascinating mechanical properties. This hydrogel demonstrates superior long-term stability and energy efficiency in real water purification applications, outperforming most previously reported photothermal materials.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Wenqian Zheng, Lina Wang, He Jiao, Zhixin Wu, Qi Zhao, Tao Lin, Hude Ma, Zhilin Zhang, Xinye Xu, Jie Cao, Jiang Zhong, Jingkun Xu, Baoyang Lu
Summary: A cost-effective multilayered hydrogel-based first-aid burn wound patch with rapid cooling and efficient anti-inflammation properties has been designed and fabricated.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Fajuan Tian, Jiawen Yu, Wen Wang, Dianbo Zhao, Jie Cao, Qi Zhao, Fucheng Wang, Hanjun Yang, Zhixin Wu, Jingkun Xu, Baoyang Lu
Summary: By using a simple two-step electropolymerization method, we have developed an adhesive and long-term stable conducting polymer neural interface that shows excellent adhesion to metallic electrodes. This interface can potentially serve as a powerful tool for advanced neuroscience research and cutting-edge clinical applications like brain-controlled intelligence.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Tao Zhou, Hyunwoo Yuk, Faqi Hu, Jingjing Wu, Fajuan Tian, Heejung Roh, Zequn Shen, Guoying Gu, Jingkun Xu, Baoyang Lu, Xuanhe Zhao
Summary: Researchers have developed a bi-continuous conducting polymer hydrogel with high electrical conductivity, stretchability, and toughness for 3D printing soft bioelectronic devices. This hydrogel shows promise for long-term in vivo electrophysiological monitoring and stimulation due to its unique combination of electrical conductivity and tissue-like mechanical properties. The hydrogel achieves high electrical conductivity, stretchability, and fracture toughness in physiological environments, making it suitable for advanced fabrication methods such as 3D printing. The researchers also demonstrate the use of this hydrogel for 3D printing monolithic all-hydrogel bioelectronic interfaces for long-term electrophysiological recording and stimulation in rat models.
Article
Materials Science, Multidisciplinary
Haiyang Qin, Mengmeng Sun, Peiyi Li, Junye Li, Zhilin Zhang, Shuqi Dai, Mingjun Huang, Baoyang Lu, Xiaofang Pan, Lidong Wu
Summary: Soft electronics is an important research field with diverse applications. Liquid metal has emerged as a promising material due to its high electrical conductivity and fluidity. In this study, a novel approach for direct dispersion of liquid metal nanoparticles in biocompatible hyaluronic acid is presented, creating multifunctional liquid metal/hyaluronic acid hydrogels. These hydrogels exhibit remarkable electromechanical properties and can be utilized as sensing material for facial expression monitoring systems in soft robotics. This study not only advances the understanding of liquid metal properties, but also expands its potential application scenarios in soft robotics and implantable sensors.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
Hude Ma, Haiyang Qin, Xiao Xiao, Na Liu, Shaolei Wang, Junye Li, Sophia Shen, Shuqi Dai, Mengmeng Sun, Peiyi Li, Xiaofang Pan, Mingjun Huang, Baoyang Lu, Jun Chen, Lidong Wu
Summary: Highly stretchable and robust strain sensors are being developed as promising candidates for wearable electronics. The energy consumption and device aging are the main challenges in practical application. A liquid metal-embedded hydrogel is designed as a sensing material to overcome these challenges. The sensing material exhibits high conductivity, low elastic modulus, ultrahigh stretchability, and excellent robustness. The integration of this material with a monitoring system allows for hand gesture monitoring and sign-to-verbal translation, providing an ideal strategy for communication and expanding the application of wearable electronics.
Article
Chemistry, Multidisciplinary
Zhilin Zhang, Guangda Chen, Yu Xue, Qingfang Duan, Xiangyu Liang, Tao Lin, Zhixin Wu, Yun Tan, Qi Zhao, Wenqian Zheng, Lina Wang, Fucheng Wang, Xiaoyu Luo, Jingkun Xu, Ji Liu, Baoyang Lu
Summary: In this study, conducting polymer hydrogels with anisotropic structures and mechanics were successfully fabricated through a combined freeze-casting and salting-out process. The as-fabricated conducting polymer hydrogels exhibit high fatigue threshold (>300 J m(-2)), low Young's modulus (& AP;100 kPa), as well as long-term strain sensing robustness (over 10 000 cycles). Such superior performance enables their application as strain sensors to monitor the real-time movement of underwater robotics.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Jiawen Yu, Fajuan Tian, Wen Wang, Rongtai Wan, Jie Cao, Chen Chen, Dianbo Zhao, Jingcheng Liu, Jiang Zhong, Fucheng Wang, Qi Liu, Jingkun Xu, Baoyang Lu
Summary: Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS)-based hydrogels have emerged as ideal interfacing materials for bioelectronics due to their intriguing electrical, mechanical, and biological properties. However, the development of high-performance PEDOT:PSS-based hydrogels that simultaneously achieve high conductivity, robust mechanical properties, and accessibility for advanced manufacturing technologies remains a critical challenge for further advancing such materials towards practical applications.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xinye Xu, Qi Zhao, Qi Liu, Junxiao Qiu, Shutong Yuan, Zhixin Wu, Ruping Yang, Jie Cao, Lina Wang, Jingkun Xu, Baoyang Lu
Summary: This study proposes a facile approach to fabricate a bilayered wood-PEDOT:PSS hydrogel interfacial evaporator with excellent light absorption and efficient photothermal conversion. The as-fabricated evaporator demonstrates a remarkably high evaporation rate and energy efficiency, and shows outstanding performance stability and ion removal capability in practical applications such as sewage purification and desalination.
Article
Nanoscience & Nanotechnology
Kang Wang, Zhixin Wu, Rongfang Wu, Jianfeng Zang, Baoyang Lu, Chao Du, Yan Yu
Summary: Flexible strain sensors were prepared on medical catheters by using certain materials as substrates, enabling direct detection of strain and contact force. The strain sensor had an adjusted gauge factor (GF) achieved by changing the resistance during preparation. By controlling the composite material seepage zone, a maximum achievable GF of 121 at a low strain of 1% was obtained, capable of detecting low forces with high resolution. Liquid glue encapsulation did not affect the conductive network of the sensor, and the sensor exhibited a response time of 50 ms and remained unchanged after 1000 cycles, making it suitable for intestinal shape detection. Integration of four strain sensors allowed for the detection of bending direction and examination of spatial shape. The friction method for preparing strain sensors on medical catheters with different GFs shows potential for various medical applications.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2023)
Article
Chemistry, Multidisciplinary
Yanmei Liang, Danqin Li, Yao He, Shixing Chao, Mingming Zhang, Xueqian Zhao, Weiqiang Zhou, Jingkun Xu, Baoyang Lu
Summary: This study successfully fabricated oxygen-vacancy PEDOT/V2O5 ultrathin nanosheets with high specific capacitance and excellent cyclic stability, demonstrating their enormous potential in high-energy storage.
NEW JOURNAL OF CHEMISTRY
(2023)
