Article
Forestry
Jia-Wen Xu, Yi-Dong Ding, Su-Li Li, Rong Mao
Summary: Overall, branches tended to leach lower amounts of DOC with lower aromatic content compared to roots, regardless of tree species. DOC quantity generally increased as diameter class decreased, while aromatic content showed an opposite trend for both branches and roots. Furthermore, DOM biodegradation increased with increasing diameter class, with branches exhibiting greater biodegradation compared to roots.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Article
Chemistry, Analytical
Siyuan Jing, Yu Huang, Yinjuan Chen, Xueqing He, Zhong Chen, Xingyu Lu, Minghuo Wu, Thomas C. Wanger
Summary: This study developed a simple and effective method using density gradient ultracentrifugation (DGU) to extract and separate various types of nano-/microplastics (NMPs) from environmental samples. By changing the density of the density gradient medium, different sizes of NMPs could be extracted and separated from soil samples. The effectiveness and compatibility of DGU were confirmed through the correct identification of NMPs using various analytical methods.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Guoqing Cheng, Takuya Hayashi, Yuya Miyake, Takashi Sato, Hiroshi Tabata, Mitsuhiro Katayama, Naoki Komatsu
Summary: In this work, host molecules called nanotweezers and nanocalipers were used to separate carbon nanotubes through host-guest complexation. The interlocking of the host molecules with the carbon nanotubes was confirmed through various techniques, and the interlock was easily released through demetalation. The diameter selectivity of the separation process was evaluated using Raman, photoluminescence, and absorption spectroscopy.
Article
Polymer Science
Alessandra Longo, Giovanni Dal Poggetto, Mario Malinconico, Paola Laurienzo, Ernesto Di Maio, Maria Laura Di Lorenzo
Summary: This work presents the enhancement of crystallization rate of poly (L-lactic acid) (PLLA) by introducing optically pure short chain branches. The synthesized graft copolymer demonstrates faster crystallization rate compared to commercial PLLA and a binary blend with the same composition. The short branches play a crucial role in promoting crystal nucleation and growth.
Article
Plant Sciences
Min Tang, Xiaodong Gao, Pute Wu, Hongchen Li, Chao Zhang
Summary: This study investigated the effects of different mulching measures on soil moisture, soil temperature, and crop growth in rain-fed jujube orchards using micro-plot experiments. The results showed that mulching with jujube branches increased soil moisture, regulated soil temperature, and promoted jujube growth.
Article
Chemistry, Physical
Ananya Sathanikan, Giacomo Ceccone, Jorge Banuls-Ciscar, Miaobo Pan, Fadwa Kamal, Talia Bsaibess, Anne Gaucher, Damien Prim, Rachel Meallet-Renault, Pascal Colpo, Sonia Amigoni, Frederic Guittard, Thierry Darmanin
Summary: The study aims to control the surface wetting and fluorescence properties of conducting polymer nanotubes through post-grafting. Findings suggest that surface hydrophobicity and fluorescence depend on the substituent, while surface morphology remains unchanged after grafting.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Physics, Multidisciplinary
Paul M. Mannix, Yannick Ponty, Florence Marcotte
Summary: This study demonstrates that nonlinear optimization can successfully identify subcritical dynamo branches as well as the structure and amplitude of their critical perturbations in a freely evolving and possibly turbulent flow, without prior knowledge of magnetic field amplification mechanisms.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Physical
Yu Gu, Haixia Li, Lixia Liu, Jingye Li, Bowu Zhang, Hongjuan Ma
Summary: The radiation-induced grafting method was used for the first time to modify multiwalled carbon nanotubes with polyvinyl alcohol, resulting in excellent dispersibility and stability. Composite membranes based on modified carbon nanotubes showed high filtration flux, oil rejection, and water flux recovery, demonstrating great potential for diverse applications.
Article
Chemistry, Multidisciplinary
Dusan Vobornik, Maohui Chen, Shan Zou, Gregory P. P. Lopinski
Summary: This study identifies two issues that can impact the accuracy of AFM measurements of single-wall carbon nanotubes' diameter. The proposed protocol effectively reduces errors associated with these issues. An analysis method is developed to minimize uncertainties in the extraction of diameters from measured images. The method is successfully applied to measure the diameter distribution of individual highly semiconducting enriched nanotubes in networks.
Article
Materials Science, Multidisciplinary
Yulin Wang, Zhibo Luo, Ji Zhou, Xueying Fan, Jie Zhang, Yuncan Jia, Shang Chen, Xiaodong Meng, Christopher W. Bielawski, Jianxin Geng
Summary: This study proposes a method of covalently grafting sulfur-containing polymers to carbon nanotubes as a solution to the problems associated with sulfur cathodes in Li-S batteries. The resulting composite material effectively establishes a porous network and facilitates electron transport, suppressing the shuttle effect of polysulfides. Compared to cells prepared from elemental sulfur, the devices containing the composite material exhibit improved specific capacity and suppressed capacity fading rate.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Physical
Jojibabu Panta, Andrew N. Rider, John Wang, Richard Yang, Narelle Brack, Y. X. Zhang
Summary: Incorporating branched polyethyleneimine dendrimer (PEI) functionalized carbon nanotubes (CNTs) and a phase-separated triblock copolymer significantly enhanced the lap shear strength of epoxy-based adhesive. The level of PEI grafting was controlled by adjusting the CNT to PEI dispersion ratio and led to grafting percentages ranging from 5% to 51%. The highest grafting ratios improved the dispersion of CNTs, but heterogeneous curing reactions and localised stress concentrations caused a reduction in lap shear strength.
APPLIED SURFACE SCIENCE
(2023)
Article
Environmental Sciences
Guobin Song, Anqi Li, Yawei Shi, Wanran Li, Haonan Wang, Chunchao Wang, Ruijuan Li, Guanghui Ding
Summary: In this study, five magnetic multi-walled carbon nanotubes with different diameters were prepared and their performance in removing methylene blue from water was investigated. The surface of these nanotubes was decorated with Fe3O4 nanoparticles, making them superparamagnetic. The results showed promising potential for these nanotubes as adsorbents for dye removal in wastewater treatment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Physical
Yayang Yu, Wenke Wang, Xiao Li, Linhai Li, Shilong Li, Xiaojun Wei, Weiya Zhou, Jing Lin, Yang Huang, Huaping Liu
Summary: The photodetection performances of SWCNTs/perovskite QDs heterojunction films were investigated by systematically studying the diameter effect of s-SWCNTs with different bandgaps. The results showed that with an increase in diameter of s-SWCNTs, the heterojunction exhibited improved responsivity, detectivity, and faster response time. These improvements can be attributed to the higher carrier mobility of larger-diameter SWCNT films and the increasing built-in electric field at the heterojunction interfaces between larger-diameter SWCNTs and CsPbBr3 QDs, which enhanced the separation of photogenerated excitons and the transport of carriers in SWCNT films.
Article
Chemistry, Multidisciplinary
Asmaa M. Abu El-Soad, Giuseppe Lazzara, Alexander Pestov, Daria P. Tambasova, Denis O. Antonov, Giuseppe Cavallaro, Elena G. Kovaleva
Summary: This research focuses on improving the degree of grafting of chloro-silane onto HNT's surface by incorporating HNTs with CPTMS under different experimental conditions. Various parameters were studied to optimize the grafting process, and the best results were achieved using toluene as a dispersing medium, a molar ratio of HNTs/CPTMS/H2O of 1:1:3, and a refluxing time of 4 hours. Additional triethylamine (Et3N) and ammonium hydroxide (NH4OH) further increased the degree of grafting of CPTMS onto the HNT's surface.
APPLIED SCIENCES-BASEL
(2021)
Article
Multidisciplinary Sciences
Nathaniel H. Hunt, Judy Jinn, Lucia F. Jacobs, Robert J. Full
Summary: Arboreal animals, such as fox squirrels, demonstrate the synergistic roles of biomechanics and cognition in robust gap-crossing strategies by balancing gap distance and branch-bending compliance to make split-second decisions, quickly learning to modify impulse generation, and executing agile landing maneuvers. Their adaptive parkour behavior reveals an innovative solution for challenging leaps, showcasing the importance of biomechanics and cognition in decision-making during acrobatic maneuvers.
Article
Chemistry, Multidisciplinary
Haijun Liu, Quoc Huy Thi, Ping Man, Xin Chen, Tianren Chen, Lok Wing Wong, Shan Jiang, Lingli Huang, Tiefeng Yang, Ka Ho Leung, Tsz Tung Leung, Shan Gao, Honglin Chen, Chun-Sing Lee, Min Kan, Jiong Zhao, Qingming Deng, Thuc Hue Ly
Summary: This study introduces novel ice-aided transfer and ice-stamp transfer methods, which achieve ultrahigh quality and exceptional cleanliness in transferring 2D materials. In addition, ice can also be used for cleaning the surfaces of 2D materials. These new techniques enable unprecedented ultraclean 2D materials surfaces and performances, contributing to upcoming technological revolutions associated with 2D materials.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Chen Cao, Ji-Hua Tan, Ze-Lin Zhu, Jiu-Dong Lin, Hong-Ji Tan, Huan Chen, Yi Yuan, Man-Kit Tse, Wen-Cheng Chen, Chun-Sing Lee
Summary: By intramolecular cyclization in a carbonyl/N resonant core (QAO), a deep-blue emitter (CZ2CO) with a peak wavelength of 440 nm and an ultranarrow spectral FWHM of 16 nm (0.10 eV) was developed. CZ2CO exhibits excellent performance that complies with the BT.2020 standard. Additionally, a hyper-fluorescent device based on CZ2CO achieves a high maximum external quantum efficiency (EQE(max)) of 25.6% and maintains an EQE of 22.4% at a practical brightness of 1000 cd m(-2).
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Jing De Chen, Hui-Min Liu, Hao Ren, Ye-Fan Zhang, Hong-Yi Hou, Yan-Qing Li, Zisheng Su, Jian-Xin Tang
Summary: Semitransparent organic solar cells face challenges in color tunability. This study proposes a method using amorphous photonic crystals as substrates to achieve viewing-angle-independent color reflection, showing variations from blue to pink. The cells on flexible plastic also maintain stable colors even in bending state.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Physical
Tianxing Kang, Chenchen Wang, Xiaoyang Zhao, Zhiqiang Guan, Dong Shen, Tianyi Song, Yan Wu, Fan Zhang, Yongbing Tang, Zhongqiu Tong, Chun-Sing Lee
Summary: The research team has developed an electrochemically inert and catalytic sp2c-COF separator to stabilize Li plating/stripping and accommodate high mass loadings of cathode in future high energy-density rechargeable batteries with Li metal anodes (LMAs). The nano-pores of sp2c-COF enable homogeneous Li+ flux and its electrochemical inertness prevents side reactions. The cyano-groups on sp2c-COF are critical for generating an inorganic-rich solid electrolyte interphase. Li symmetrical cells demonstrate excellent Li plating/stripping behaviors, and full batteries assembled with LiCoO2 and LiNi0.8Co0.1Mn0.1O2 cathodes show impressive areal capacities. This work provides an important strategy for the stabilization of LMA in rechargeable batteries.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Physical
Hui Wang, Wanlong Bai, Hui Wang, Dezhi Kong, Tingting Xu, Zhuangfei Zhang, Jinhao Zang, Xinchang Wang, Sen Zhang, Yongtao Tian, Xinjian Li, Chun-Sing Lee, Ye Wang
Summary: A robust substrate for sodium metal has been developed using a novel 3D printing technology. The electrodes made from this substrate show remarkable cycling lives of over 2000 hours. The deposition of sodium ions on these electrodes is dendrite-free, as confirmed by in-situ imaging. This study presents a new 3D printing strategy to enhance sodium deposition chemistry for high-energy-density sodium metal batteries.
ENERGY STORAGE MATERIALS
(2023)
Article
Engineering, Environmental
Hui Wang, Xi Zhang, Lu Zhou, Xiao-Chun Fan, Ying-Chun Cheng, Jia Yu, Jia-Xiong Chen, Kai Wang, Xiao-Hong Zhang
Summary: By leveraging the participation of localized excited triplet states from both donor and acceptor segments, an ingenious molecular design was employed to significantly boost the reverse intersystem crossing (RISC) rates of red thermally activated delayed fluorescence (TADF) emitters. The molecule DBBPZ-IDPZ showed 15.7 times accelerated RISC rate and a higher photoluminescence quantum yield of 98.1% compared to the control molecule. The red OLED based on DBBPZ-IDPZ exhibited a significantly improved external quantum efficiency of 26.0%, which is approximately triple that of the control device. This work provides new insights into the molecular design tactic of high-performance red TADF OLEDs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Electrochemistry
Ru Wang, Minglei Li, Yue Liu, Gaole Dai, Tingting Wu, Wei He, Shunan Feng, Xiaohong Zhang, Yu Zhao
Summary: In this study, a new strategy is proposed to tune the redox potentials of bipolar redox-active organic molecules (ROMs) with fused conjugation by incorporating electron-withdrawing or electron-donating groups. Three designed bipolar ROMs with fused conjugation based on phenoxazine derivatives exhibit highly reversible redox reactions in the given electrolyte systems. The symmetric organic redox flow batteries (ORFBs) based on these bipolar ROMs maintain decent electrochemical stability when cycled in a compatible electrolyte.
ELECTROCHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Ping Man, Shan Jiang, Ka Ho Leung, Ka Hei Lai, Zhiqiang Guang, Honglin Chen, Lingli Huang, Tianren Chen, Shan Gao, Yung-Kang Peng, Chun-Sing Lee, Qingming Deng, Jiong Zhao, Thuc Hue Ly
Summary: A novel salt-assisted chemical vapor deposition (CVD) method was used to synthesize ultrahigh-density vacancy-rich MoS2 with controllable sulfur vacancy density. The vacancy-rich MoS2 showed exceptional catalytic activity, with an overpotential of 158.8 mV (100 mA cm(-2)) and a Tafel slope of 54.3 mV dec(-1) in 0.5 m H2SO4 electrolyte. This approach represents a significant leap toward achieving better control over the catalytic performances of 2D materials.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Analytical
Jie Sha, Weimin Liu, Xiuli Zheng, Yimin Guo, Xuewei Li, Haohui Ren, Yuanyuan Qin, Jiasheng Wu, Wenjun Zhang, Chun-Sing Lee, Pengfei Wang
Summary: In this study, a new polarity-sensitive probe TBPCPP was designed and synthesized for visualizing the polarity changes of lipid droplets and lipid-rich regions. Using two-photon fluorescence lifetime imaging microscopy, it was found that the polarity of lipid droplets decreased gradually during steatosis.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Zhiquan Zhang, Jianli Liang, Wei Zhang, Min Zhou, Xianglin Zhu, Zheyang Liu, Yang Li, Zhiqiang Guan, Chun-Sing Lee, Po Keung Wong, Huaming Li, Zhifeng Jiang
Summary: In this study, an eco-friendly and highly efficient biohybrid photocatalyst, carbonized rape pollen confined Cu2O nanoparticles (Cu2O/BC), was fabricated for the photodegradation of tetracycline under visible-light illumination. The Cu2O/BC exhibited excellent photocatalytic activity, with a degradation rate roughly 6.0 and 3.2 times higher than BC and Cu2O, respectively. The enhanced performance was attributed to the construction of a heterojunction, promoting the effective separation of photogenerated carriers, and the three-dimensional hollow BC providing structural stability for Cu2O. This work provides crucial insights into the utilization of nature-based biological materials in efficient antibiotic removal and environmental remediation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Multidisciplinary
Shuang Tian, Sean J. D. Lugger, Chun-Sing Lee, Michael G. Debije, Albert P. H. J. Schenning
Summary: Charge transfer complexes (CTCs) based on self-assembled donor and acceptor molecules enable absorption of red-shifted wavelengths. In this work, a CTC embedded in a hydrogen-bonded liquid crystal elastomer (LCE) is demonstrated, which can be reformed and reprocessed. The CTC, acting as a near-infrared (NIR) dye, allows photothermal actuation of the LCE when hydrogen bonding is present. Disrupting the hydrogen bond interactions can selectively heat and actuate specific regions of the LCE film by disassembling the CTC, and the non-CTC state can persist or be recovered by heat treatment. The ability to reform the shape, color, and actuation mode of the LCE, in addition to CTC variability, provides unprecedented application versatility.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Review
Chemistry, Multidisciplinary
Xiaochun Fan, Xiaoyao Hao, Feng Huang, Jia Yu, Kai Wang, Xiaohong Zhang
Summary: With the increasing demand for ultra-high-resolution displays, the ITU has introduced the new color gamut standard, ITU-R Recommendation BT.2020. Organic light-emitting diodes (OLEDs) are widely used in display technologies but face challenges in meeting the BT.2020 standard. Thermally activated delayed fluorescence (TADF) emitters show promise due to their high exciton utilization, and research is being conducted to develop TADF emitters that meet the BT.2020 standard. This article provides a comprehensive overview of recent advancements in TADF emitters with CIE coordinates surpassing NTSC and approaching BT.2020 standards.
Article
Energy & Fuels
Cao Yu, Kun Gao, Chen-Wei Peng, Chenran He, Shibo Wang, Wei Shi, Vince Allen, Jiteng Zhang, Dengzhi Wang, Gangyu Tian, Yifan Zhang, Wenzhu Jia, Yuanhong Song, Youzhong Hu, Jack Colwell, Chunfang Xing, Qing Ma, Huiting Wu, Liangyuan Guo, Gangqiang Dong, Hao Jiang, Haihong Wu, Xinyu Wang, Dacheng Xu, Kun Li, Jun Peng, Wenzhu Liu, Daniel Chen, Alison Lennon, Xinmin Cao, Stefaan De Wolf, Jian Zhou, Xinbo Yang, Xiaohong Zhang
Summary: Reducing parasitic absorption and shadowing losses is essential for unlocking the full performance potential of silicon heterojunction solar cells. This study addresses these challenges by developing a high-frequency plasma-enhanced chemical vapour deposition system and seed-free copper plating technique, resulting in improved efficiency and feasibility of mass production.
Article
Chemistry, Multidisciplinary
Yi-Zhong Shi, Ya-Fang Xiao, Hao Wu, Shao-Li Zhang, Xiao-Chun Fan, Ye Tian, Chang-Qing Ye, Kai Wang, Jia Yu, Chun-Sing Lee, Xiao-Hong Zhang
Summary: In this study, a novel single-molecule emitter with dual-thermally activated delayed fluorescence (TADF) properties was presented. By introducing a pyridine bridge, the steric hindrance was greatly reduced, allowing the molecule to have dual-stable conformations in the ground state. Both the quasi-axial (QA) and quasi-equatorial (QE) forms of the emitter showed distinct TADF characteristics, which is attributed to an additional higher reverse intersystem crossing pathway. This is the first time that dual-TADF properties have been achieved based on conformational isomerism. The potential applications in self-doping organic light-emitting diodes and biomedical imaging were also explored.
Article
Chemistry, Multidisciplinary
Meng-Yuan Chen, Feng Huang, Hao Wu, Ying-Chun Cheng, Hui Wang, Ya-Nan Hu, Xiao-Chun Fan, Jia Yu, Kai Wang, Xiao-Hong Zhang
Summary: Atomically separated frontier molecular orbital (FMO) distribution is crucial for achieving narrowband emissions in multiple resonance (MR)-type thermally activated delayed fluorescence emitters. This study explores how direct donor/acceptor decoration enhances atomic FMO separation while avoiding bonding features. Two MR derivatives are synthesized by integrating MR frameworks at different sites, and their emission characteristics and performance in organic light-emitting diodes (OLEDs) are compared.
MATERIALS HORIZONS
(2023)