Article
Chemistry, Multidisciplinary
Haiyun Dong, Chunhuan Zhang, Fang-Jie Shu, Chang-Ling Zou, Yongli Yan, Jiannian Yao, Yong Sheng Zhao
Summary: Novel mesoscopic semiconductor architectures are continuously synthesized using a superkinetic crystal growth method to produce 2D oval organic semiconductor microcrystals. These microcrystals break the crystal growth anisotropy and naturally form chaotic optical microresonators, supporting low-threshold lasing and directional laser emission assisted by chaotic modes. These results will reshape crystal growth theory understanding and guide the design of crystalline photonic materials.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Fuxu Han, Jia Wu, Peichuan Sun, Yuzhen Zhang, Feng Tan, Wei Li, Mingli Xu, Chungang Min, Jianhua Wang, Xikun Yang
Summary: This study reports an approach to control the shape of branched PtNi alloy nanocrystals by tuning the molar ratio of Pt to Ni in solution, and analyzes the growth mechanisms during the evolution of nanocrystal morphology. The highly branched PtNi alloy nanocrystals show significantly enhanced electrocatalytic activity and durability compared to commercial Pt catalysts.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Multidisciplinary Sciences
Sonal Shree, Sabyasachi Sutradhar, Olivier Trottier, Yuhai Tu, Xin Liang, Jonathon Howard
Summary: This study discovers the dynamic instability of neuronal dendrites and its impact on morphology, and demonstrates through a computational model that this instability leads to the complex and variable dendritic morphology. These principles may apply to branching in other cell types and at different levels.
Article
Chemistry, Multidisciplinary
Chenzhe Xu, Zheng Zhang, Suicai Zhang, Haonan Si, Shuangfei Ma, Wenqiang Fan, Zhaozhao Xiong, Qingliang Liao, Abdul Sattar, Zhuo Kang, Yue Zhang
Summary: The Lewis acid-base adduct approach has been widely used for high-crystalline perovskite films, but the detailed crystallization process manipulated by Lewis base additives has revealed two distinct crystal growth stages, resulting in retardant crystallization kinetics and improved optoelectronic properties. This provides insight into the precise regulation of perovskite film crystallization kinetics towards high performance.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Thermodynamics
Seongsu Park, Long Yang, Byung-Dae Park, Guanben Du
Summary: In this study, the thermal cure kinetics of highly branched polyurea (HBPU) resins were investigated using differential scanning calorimetry. The results showed that the thermal curing of HBPU resins changed from chemical-controlled reaction to diffusion-controlled reaction as the molar ratio increased. The Malek method revealed that all HBPU resins followed an autocatalytic reaction model, regardless of the molar ratios. FWO and KAS methods were appropriate for predicting the reaction model of 2.0 and 3.0 HBPU resins when combined with the Malek method.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Materials Science, Multidisciplinary
Zhenyu Fang, Hong Wang, Junfeng Liang, Zhifang Wang, Wenchong Wang, Feng Huang
Summary: This paper reports a high-resolution and high-performance method for the fabrication of single crystal organic photodetectors, which is compatible with photolithography. The method enables the formation of single crystal arrays with ultrahigh resolution and addressable device arrays. Finally, the array is successfully used to read a light signal of the letter S.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Multidisciplinary
Qi Wang, Miaomiao Li, Zhongxiang Peng, Nigel Kirby, Yunfeng Deng, Long Ye, Yanhou Geng
Summary: Polythiophenes, known for their low cost and high synthesis scalability, have gained attention in organic solar cell research. However, their performance in polythiophene:nonfullerene blend solar cells is hindered by poor miscibility between polythiophene and acceptors, necessitating efforts in engineering the molecular structure for better compatibility. Through group contribution calculations, the miscibility of these blends has been successfully adjusted by altering the ratios of specific chains in ester-substituted polythiophenes, leading to record-high power conversion efficiencies.
SCIENCE CHINA-CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Jinyang Ouyang, Fan Wu, Xiaoli Zhao, Xiaoniu Yang
Summary: A convenient and effective method to control the crystallinity and self-aggregation of fused ring electron acceptors (FREAs) is demonstrated by changing the length of the first-position branched alkyl chain. The crystallinity and self-aggregation of the acceptors decrease as the length of the branched alkyl chain is increased. Among the studied FREAs, 4TC-4F-C8C8 exhibits medium crystallinity and lower self-aggregation, leading to favorable phase separation when blended with PM6 and resulting in the highest power conversion efficiency of 14.85%.
Article
Materials Science, Multidisciplinary
Jianfeng Sun, Lingjun Zhang, Yihao Zhou, Zhongjie Li, Alberto Libanori, Qian Tang, Yingzhou Huang, Chenguo Hu, Hengyu Guo, Yan Peng, Jun Chen
Summary: In this study, a highly efficient droplet manipulating method using direct charge injection via human motion-induced triboelectricity is proposed. A triboelectric nanogenerator is utilized to provide charges and electric fields to drive the movement of liquid droplets. This method achieves higher charge quantity and velocity compared to traditional methods, and enables both reciprocating and jumping motions of the droplets. A versatile platform with system-level functions including droplets transportation, positioning, merging, and cleaning is also demonstrated.
Article
Chemistry, Applied
Ying Zhang, Ziqi Liang, Jiangting He, Wang Ni, Miaomiao Li, Yanhou Geng
Summary: Polythiophenes and its derivatives have attracted research interest in organic solar cells due to their low cost and scalability. However, the efficiency of PT-based devices is lower than other polymer-based devices. To improve the performance, pairing PTs with low-bandgap acceptors is desired. This study demonstrates that promoting crystallization can induce phase separation and significantly improve the efficiency of the blend system.
Article
Nanoscience & Nanotechnology
Yun-Zhe Guo, Fei Gao, Zhuo Wang, Yahu A. Liu, Wei-Bo Hu, Hui Yang, Ke Wen
Summary: The study demonstrated the fabrication of PAF-P5 for efficient adsorption and removal of organic pollutants from water, with a limitation towards aromatic organic dyes. By chemically breaking down the pillar[5]arene rings in PAF-P5, the resultant PAF-DeP5 exhibited altered adsorption capabilities towards different types of organic pollutants.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Hang Xue, Chong Yang, Frederic De Geuser, Peng Zhang, Jinyu Zhang, Bin Chen, Fuzhu Liu, Yong Peng, Jianjun Bian, Gang Liu, Alexis Deschamps, Jun Sun
Summary: Lightweight design and advanced energy applications require high-strength Al alloys for high-temperature use. However, current commercial high-strength Al alloys are limited to low-temperature applications due to difficulties in achieving both high thermal stability and large volume fraction of coherent nanoprecipitates. In this study, we demonstrate a strategy to stabilize coherent nanoprecipitates in Sc-added Al-Cu-Mg-Ag alloys, resulting in exceptional creep resistance and tensile strength at 400 degrees C. The formation of the stable nanoprecipitates is triggered by ledge-aided in situ phase transformation between slow-diffusing Sc and fast-diffusing Cu atoms. This method shows promise for the development of advanced high-temperature light alloys for large-scale industrial production.
Article
Biochemistry & Molecular Biology
Yanhong Liu, Silei Bai, Tong Wu, Chun-Chi Chen, Ying Liu, Xiangyu Chao, Yugang Bai
Summary: By designing snowflake-shaped star polymers, high branching and globular conformation can be easily achieved, providing a convenient scaffold for introducing functional groups. This novel structure exhibits high branching, biocompatibility, and cell permeability, demonstrating a wide range of potential applications.
Article
Chemistry, Multidisciplinary
Yang Su, Bin Wu, Song Chen, Ji-Hao Sun, You-Jun Yu, Ming-Peng Zhuo, Zuo-Shan Wang, Xue-Dong Wang
Summary: In this study, organic branched heterostructures (OBHs) were designed for optical interconnection, achieving precise control including trunk morphologies and branched microwire number. The OBHs exhibit multichannel coupling outputs and excitation position-dependent waveguide characteristics, leading to various outcoupling signals with tunable intensities and emission colors. The optical interconnects are realized through exciton conversion and photon propagation between branch and trunk at the heterojunction, benefiting the application possibilities of two-dimensional (2D) optical barcodes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Ziyuan Chen, Qinrong Cheng, Haiyang Chen, Yeyong Wu, Junyuan Ding, Xiaoxiao Wu, Heyi Yang, Heng Liu, Weijie Chen, Xiaohua Tang, Xinhui Lu, Yaowen Li, Yongfang Li
Summary: Flexible perovskite solar cells (pero-SCs) have the potential to complement traditional silicon SCs in portable power applications. However, their stability issues hinder practical use. A new strategy using cross-linkable monomer TA-NI as ligaments on perovskite grain boundaries is developed to improve their stability and efficiency. The resulting flexible pero-SCs show promising improvements in efficiency and stability, paving the way for industrial-scale development.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ruofei Jia, Jiaxin Li, Huanyu Zhang, Xiujuan Zhang, Shuiling Cheng, Jing Pan, Chaoqiang Wang, Azhar Ali Ayaz Pirzado, Huanli Dong, Wenping Hu, Jiansheng Jie, Xiaohong Zhang
Summary: Highly efficient linearly polarized light-emitting diodes (LP-LEDs) are demonstrated using 2,6-diphenylanthracene (DPA) single crystals (SCs) as intrinsically polarized emitters. The LP-LEDs exhibit a maximum external quantum efficiency (EQE) of 3.38%, which is the highest among reported organic SC-based LEDs. Furthermore, an interchip polarized optical communication system based on organic SCs is achieved for the first time.
ADVANCED MATERIALS
(2023)
Article
Optics
Xiao-Chun Fan, Kai Wang, Yi-Zhong Shi, Ying-Chun Cheng, Yi-Ting Lee, Jia Yu, Xian-Kai Chen, Chihaya Adachi, Xiao-Hong Zhang
Summary: Researchers have developed a new ultrapure green emitter called DBTN-2, which greatly improves the efficiency and color purity of OLED technology. The unique molecular design of this material reduces relaxation energy between excited and ground states and enhances spin-orbit couplings, resulting in highly efficient operation. These advancements make DBTN-2 a promising candidate for commercial green OLED displays.
Article
Materials Science, Multidisciplinary
Jiarong Yao, Lingjie Sun, Yanling Xiao, Jinyu Liu, Jiansheng Jie, Xuying Liu, Fangxu Yang, Yajing Sun, Rongjin Li, Wenping Hu
Summary: This study investigates the relationship between surface free energy and crystallization tendency of 2D organic crystals, and proposes a surface free energy anisotropy factor to measure this tendency. Two organic compounds were studied, and the one with a larger surface free energy anisotropy factor showed a higher tendency for 2D crystallization.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hui Wang, Kai Wang, Jia-Xiong Chen, Xi Zhang, Lu Zhou, Xiao-Chun Fan, Ying-Chun Cheng, Xiao-Yao Hao, Jia Yu, Xiao-Hong Zhang
Summary: To achieve deep-red/near-infrared emission in organic light-emitting diodes (OLEDs), intermolecular interactions of red emitters are usually required, but these interactions often lead to efficiency declines. In this study, an advanced method of managing intermolecular interactions of thermally activated delayed fluorescence (TADF) emitters was proposed. This work provides instructive guidance for manipulating the intermolecular interactions of red TADF emitters and will contribute to the development of high-performance DR/NIR OLEDs in the future.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yanling Xiao, Wei Deng, Jiajing Hong, Xiaobin Ren, Xiujuan Zhang, Jialin Shi, Fangming Sheng, Xiaohong Zhang, Jiansheng Jie
Summary: The development of a simple double-blade-coating printing technique using wetting-patterned substrates allows for the production of highly crystalline organic semiconductor (OSC) thin films. This method significantly reduces the number of nucleation events, resulting in thin films with single-crystal domains and high yield. The organic field-effect transistor array fabricated from these patterned OSC thin films exhibits excellent performance with an average mobility of 11.5 cm(2) V-1 s(-1), which is 12.5-fold higher than the reference sample fabricated using conventional single-blade coating. This approach has the potential to be widely applied to other soluble organic materials, enabling the fabrication of multicomponent integrated electronics.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Feng Huang, Xiao-Chun Fan, Ying-Chun Cheng, Hao Wu, Xin Xiong, Jia Yu, Kai Wang, Xiao-Hong Zhang
Summary: Building blocks and heteroatom alignments are crucial for designing MR-type TADF emitters. CzBN derivatives and ν-DABNA alignments represent two star series of MR-TADF emitters, both of which exhibit impressive performances in terms of building blocks and heteroatom alignments.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Feng Huang, Ying-Chun Cheng, Hao Wu, Xin Xiong, Jia Yu, Xiao-Chun Fan, Kai Wang, Xiao-Hong Zhang
Summary: By incorporating heavy atom-containing chains onto MR frameworks, we enhanced the reverse intersystem crossing rates and TADF properties of MR emitters, achieving high external quantum efficiency in both vacuum-evaporation and solution-process OLEDs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Ye Tian, Yi-Zhong Shi, Xiao-Chun Fan, Shi-Gang Wan, Xiao-Mei Wang, Kai Wang, Jia Yu, Xiao-Hong Zhang, Chang-Qing Ye
Summary: The use of metal-free thermally activated delayed fluorescence (TADF) materials as novel photosensitizers (PSs) for triplet-triplet annihilation upconversion (TTA-UC) systems has gained significant attention. However, the selection of appropriate TADF materials remains a gap that requires further research. The study finds that TADF materials with multiple resonance (MR) effect exhibit higher performance in TTA-UC systems compared to those with intramolecular charge transfer (ICT) properties. Therefore, employing MR-TADF materials as PSs is crucial for achieving efficient TTA-UC performance.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Feng Huang, Xiao-Chun Fan, Ying-Chun Cheng, Yue Xie, Shulin Luo, Tao Zhang, Hao Wu, Xin Xiong, Jia Yu, Dan-Dan Zhang, Xian-Kai Chen, Kai Wang, Xiao-Hong Zhang
Summary: This study designs and synthesizes two MR-TADF emitters with chemically modified MR cores to incorporate long-range charge transfer excitations. The results demonstrate the significance of managing long- and short-range charge transfer excitations in MR-TADF emitters.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Hui Wang, Jia-Xiong Chen, Xi Zhang, Ying-Chun Cheng, Xiao-Chun Fan, Lu Zhou, Jia Yu, Kai Wang, Xiao-Hong Zhang
Summary: Constructing donor-pi-acceptor (D-pi-A)-type molecular structures by employing a bulky spiro-9,9'-bifluorene unit as a bridging group results in highly efficient red thermally activated delayed fluorescence (TADF) organic light-emitting diodes (OLEDs) with improved photoluminescence quantum yield and horizontal dipole ratio. The OLED based on this structure exhibits an excellent external quantum efficiency of nearly 37%, which is over 1.38-fold enhancement compared to the phenyl bridge-based control molecule. This work provides an instructive solution to design highly efficient red TADF emitters exploiting D-pi-A-type molecular structures.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Applied
Cheng-Kun Wu, Shuai Zou, Chen-Wei Peng, Si-Wei Gu, Meng-Fei Ni, Yu-Lian Zeng, Hua Sun, Xiao-Hong Zhang, Xiao-Dong Su
Summary: A novel composite downshifting nanomaterial composed of YVO4:Eu3+,Bi3+ nanoparticles and Ag nanoparticles was introduced onto industrial silicon heterojunction (SHJ) solar cells to achieve UV shielding. The composite structure showed significantly enhanced emission intensities due to the localized surface plasmon resonance (LSPR) effect, and reduced the degradation of power conversion efficiency (PCE) under UV irradiation. The experimental results demonstrated its excellent potential for enhancing the UV light stability of solar cells.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Jinhui Chen, Jinwen Wang, Shuai Chen, Jing Pan, Ruofei Jia, Chaoqiang Wang, Xiaofeng Wu, Jiansheng Jie, Xiujuan Zhang
Summary: Monolayer organic crystals offer a unique opportunity for studying the charge transport of organic semiconductors due to their 2D nature. However, large-scale growth of these crystals is challenging. This study proposes a self-limited epitaxial growth strategy to achieve large-area patterned growth of monolayer organic crystals. By confining molecular nucleation and crystallization in wetting patterns, single nuclei are formed, promoting the assembly of organic molecules. This approach has enabled the centimeter-sized patterned growth of mixed monolayer organic crystals, with potential applications in high-performance optoelectronic devices.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Environmental
Hao-Yu Yang, Heng-Yuan Zhang, Ming Zhang, Hao Zhuo, Hui Wang, Hui Lin, Si-Lu Tao, Cai-Jun Zheng, Xiao-Hong Zhang
Summary: In this study, a new triphenylamine derivative, TTPA-DCPPm, was designed by incorporating intramolecular hydrogen bonding and quasi-degenerate molecular orbitals. The rigidity is enhanced and radiative decay as well as reverse intersystem crossing (RISC) are promoted. TTPA-DCPPm demonstrates improved performance as an OLED emitter, with a maximum external efficiency of 26.5% and an emission peak at 640 nm. This work paves the way for developing efficient TPA-based deep-red emitters.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Haoyu Jiang, Zhengjun Lu, Wei Deng, Fengquan Qiu, Yujian Zhang, Jialin Shi, Jiansheng Jie, Xiujuan Zhang
Summary: This paper presents a lateral homoepitaxy growth method that is compatible with scalable solution printing techniques, enabling the fabrication of centimeter-scale organic semiconductor single crystal arrays. The approach achieves high-uniformity morphology and low trap carrier density, leading to significantly improved organic field-effect transistor performance.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Abu Talha Aqueel Ahmed, Sankar Sekar, Shubhangi S. Khadtare, Nurul Taufiqu Rochman, Bathula Chinna, Abu Saad Ansari
Summary: In this study, MnCo2S4 nanosheet catalyst was successfully synthesized and found to exhibit superior performance in hydrogen evolution. Compared to MnCo2S4, MnCo2S4 showed low overpotentials, moderate Tafel slope, and excellent sustainability. The outstanding performance can be attributed to the increased number of electrochemically active sites and enhanced electronic conductivity on the catalyst surface.
Article
Chemistry, Multidisciplinary
Victor V. Maltsev, Elena A. Volkova, Elizaveta V. Koporulina, Diana D. Mitina, Vladimir L. Kosorukov, Anna I. Jiliaeva, Daniil A. Naprasnikov, Konstantin N. Gorbachenya, Viktor E. Kisel
Summary: The phase relationships, crystal properties and luminescence kinetics of two complex systems were studied, including unit cell parameters, segregation coefficients of impurities, and lifetimes of energy levels.
Article
Chemistry, Multidisciplinary
Xiaoman Zhang, Wangwang Xu, W. J. Meng, Andrew C. Meng
Summary: This study successfully grew high-quality single crystal AlScN nanowires through ultra-high vacuum reactive sputtering technique and characterized their structure and properties. The nanowires exhibit significantly reduced mosaic spread and predominantly single ferroelectric domains, as well as a high piezoelectric constant.
Article
Chemistry, Multidisciplinary
Tom E. de Vries, Elias Vlieg, Rene de Gelder
Summary: Networks are important for describing relationships between people, roads between cities, reactions between chemicals, and other interactions. Bipartiteness, dividing the network into two groups, can facilitate the study of the network's structure. We have developed an algorithm that can find a near-optimal bipartisation within a reasonable time frame and used it to uncover the hidden structure of the CSD cocrystal network.
Article
Chemistry, Multidisciplinary
Chuchu Han, Jing Yang, Xin Zhang, Aisen Li, Jiang Peng
Summary: An elastic crystal based on a photo-reactive acylhydrazone derivative is reported, which exhibits reversible bending behavior under UV irradiation and heating. The crystal undergoes reversible E<->Z isomerization under light and heating conditions. The crystal demonstrates excellent elastic properties and the bending can be controlled to control the output direction of red light.
Article
Chemistry, Multidisciplinary
Lingfeng Zhang, Yu Wang, Yefeng Wang, Shuai Liu, Na Zhang, Mingmin Yang, Haixia Ma, Zhaoqi Guo
Summary: This study designs and synthesizes a series of high-energy salts compounds without heavy metal ions and azide groups. The molecular structures and stability of the compounds are confirmed through single-crystal X-ray diffraction and intermolecular interaction analysis. Furthermore, the thermal stability, energetic properties, and electrical initiation properties of the compounds are investigated, suggesting their potential as primary explosives.