Nano-Micro Letters
·
2024
·Vol. 17
·期 1
·1-14
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IF 31.6
Wang Jingang,Yu Haibo,Zheng Jianchen,Zhang Yuzhao,Guo Hongji,Qiu Ye,Wang Xiaoduo,Yang Yongliang,Liu Lianqing
A 2.5-dimensional dynamic structural color based on nanogratings of heterogeneous materials was proposed by interweaving a pH-responsive hydrogel with IP-L photoresist.
The nanogrid structures exhibit brilliant tuneable structural color, high sensitivity, and ultrafast recovery speeds in response to pH.
The 4D printing-based grayscale design approach was proposed for the patterned encoding and array printing of dynamic structural colors, promoting their application in patterned printing, information encryption, and microfluidic chip sensing.
研究领域:
材料科学
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光学
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
ACS Applied Bio Materials
·
2022
·
IF 0
Changsheng Huang,Yuanqiang Sun,Yanmin Zhao,Jinquan Li,Lingbo Qu,Ran Yang,Zhaohui Li
Ferroptosis triggered by an iron-dependent accumulation of lipid reactive oxygen species (ROS) has drawn widespread attention. Directly visualizing the dynamic structures of nucleic acids during the ferroptosis of cells is of great importance considering their vital roles in numerous biological functions. However, direct imaging remains challenging, largely due to the extremely high concentrations of ROS generated during ferroptosis, which can affect the imaging of nucleic acid targeted fluorescent probes. To overcome this challenge, nucleic acid-responsive carbon dots (CDs) providing favorable optical properties together with high chemical stability were synthesized. Furthermore, the CDs penetrated the cell membrane quickly and accumulated in the nuclei of cells. The robust anti-interference ability to ROS allows the CDs to visualize the dynamic structures of nucleic acids during ferroptosis. Moreover, the CDs were successfully employed in the imaging of nucleic acids during cell division. The nuclei-targeting CDs show great potential as a powerful tool for imaging nuclei in ferroptosis-related biological and clinical research.
研究领域:
生物化学
·
分子生物学
·
细胞生物学
✓ 已验证
DOI
PubMed
POLYMER
·
2021
·
IF 4.43
Jinchuang Rong,Jiang Zhong,Wanlong Yan,Maochen Liu,Yalei Zhang,Yongluo Qiao,Changqing Fu,Fei Gao,Liang Shen,Haifeng He
The novel self-healable waterborne polyurethanes (WPU) with the synergistic reversible units of aliphatic disulfide bonds and quadruple hydrogen bonding have been successfully prepared. The ureidopyrimidone (UPy) functional motifs were introduced into polymer backbones of polyurethane, where also placed the reversible disulfide bonds. The quadruple hydrogen bonds of UPy groups endowed the material a strong physical cross-linking network, which provided a superior Young's moduli . The features of dual dynamic structure could also produce a relatively low active energy of 36.1 kJ/mol, resulting in a good self-repairing efficiency of 94% under a mild condition. Furthermore, the influence of self-healing time and different repairing temperature on the healed performance was also systematically investigated. In order to describe the self-healing progress of multiple dynamic units, a physical model was used to study the evolution of self-repairing efficiency with variable healing time, indicating that quadruple H-bonding and disulfide bonds predominantly supported time dependent reconstruction of physically crosslinking network to recover the original mechanical property.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Jianlong Zhang,Jinlv Wei,Zhixiang Zhai,Huan Wen,Boyao Feng,Xizi Wu,Dexin Meng,Jia Wu,Shibin Yin
NiOOH generated in situ from pre-catalysts plays a key role in the 5-hydroxymethylfurfural electrooxidation reaction. However, the dynamic structural evolution of NiOOH remains relatively difficult and unclear. In this work, we focus on V-Ni 3 N as a case study. Density functional theory calculations, in-situ spectroscopy, and experimental results demonstrate that the V doping modulates the charge redistribution between the nickel and nitrogen in Ni 3 N and weakens the covalency of the Ni−N bonds, leading to easier formation of N vacancies and enhanced adsorption of OH* on Ni 3 N catalyst. This facilitates the transformation of the Ni−N bond into the Ni−O bond, thereby promoting the formation of active NiOOH for HMF oxidation. In addition, the doped V atoms enhance the interaction between NiOOH and HMF molecules and reduce the energy barrier of the rate-determining step. Thus, V-Ni 3 N/CC presents an excellent catalytic performance in terms of high 2,5-furandicarboxylic acid selectivity.
研究领域:
化学
·
材料科学
·
电催化
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Kuiyuan Zhang,Juxiang Chen,Xiangrong Shi,Hanqi Qian,Guangyu Wu,Bo Jiang,Dianpeng Qi,Yudong Huang
Self-healing and human-friendly electronics, with plenty of dynamic structural motifs, are desired to be ultrastretchable, highly sensitive, self-powered and responsive with external stimulus as the medium of artificial intelligence. Herein, meticulously engineered dynamic structural motifs, slipping semi-crystalline dynamic hydrogen bonding arrays (SSHAs) were firstly proposed and utilized to achieve ultrastretchable (2880 %), tough (115.7 MJ∙m −3 ) elastomers (PAT) with excellent actuation performance (actuation strain ≈ 37 %) and human-friendly healing temperature. For the multifunctionality, the elaborate assembly of SSHAs was also adopted to obtain three-dimensional (3D) physical networks (PAT-M) by integrating with Ti 3 C 2 T x and silver nanowire . As expected, high sensitivity (gauge factor, GF ≈ 60.6) and ultrahigh energy harvesting property (2.6 W∙m −2 ) were simultaneously achieved attributing to the 3D physical networks. This study not only provides a brand-new and promising strategy to develop human-friendly self-healing elastomers, but also promotes the advances of multifunctional electronics.
研究领域:
材料科学
·
智能电子
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Xiao-Chen Ma,Chun Pu,Yue-Xing Zhang,Gang-Gang Chang,Ge Tian,Si-Ming Wu,Jia-Wen Liu,Zhi-Yi Hu,Li-Ying Wang,Yi-Xia Yin,Christoph Janiak,Xiao-Yu Yang
Efficient regeneration of Pd catalysts is a challenge and has a very high technological importance. Herein, we report confined Pd clusters with the ultrafine size (1.2 nm) and ultralow loading amount (0.14 wt%) in a metal–organic framework (MOF), which could potentially allow for the successive realization of the cascade-type catalytic reaction from starting reagents to final desired products, and thus to avoid the excessive processes, save energy and reduce waste. Experiments and theoretical computations have been conducted to study the strong host–guest interaction between the Pd clusters and the MOF support, leading to the high catalytic activity and dynamic of the Pd clusters. A unique dynamic structure from active disordered arrangement to deactive crystalline arrangement and then back to the active disordered arrangement (>99% of activity after regeneration by simple H 2 reduction). The MOF-confined Pd shows excellent catalytic activity (>99% activity), selectivity (around 100%) and stability (>99% activity after recycling) under mild reaction conditions (atmospheric temperature and pressure).
研究领域:
催化
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Xiaopeng Zhang,Yulong Li,Rui Zhang,Ying Chen,Gaofeng Zhao,Weizhen Zhao,Xia-Chao Chen,Suojiang Zhang
Polyelectrolyte multilayers have received broad interests in the fields of functional coatings due to their easy deposition procedure, environmentally friendly nature and wide sensitivities to manifold external stimuli. Stimuli-triggered generation of nanoscopic structures on polyelectrolyte multilayers can be reversible generally when their structural size is less than dozens of nanometers. Transforming larger structures reversibly would represent a breakthrough of these materials for novel applications. Herein, we report that surface structures up to hundreds of nanometers can be developed on exponentially growing polyelectrolyte multilayers reversibly, which feature the diffusion of polyelectrolytes throughout the whole assemblies. These multilayers are prepared utilizing pH-amplified layer-by-layer assembly of branched polyethylenimine and photo-reactive poly(acrylic acid) azido derivative. Other than applying a single stimulus on the mobility of polymeric chains, the surface structures were developed by inducing electrostatic repulsion between chains in aqueous phases while subsequently erased by shielding supramolecular electrostatic interactions in gaseous phases. These processes are completely reversible and one potential application of this dynamic platform is to be a “smart” material for reversible visualization of various high-definition patterns with fine brightness contrast, which can be especially significant in some cutting-edge fields like the Internet of Things, information encryption/decryption and anti-counterfeiting. Beyond that, such dynamic platform can be very useful in many other research fields, such as surface wettability and smart homes.
研究领域:
材料科学
·
纳米技术
·
表面化学
✓ 已验证
DOI
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-15
·
IF 17.694
Hou Yun Nan,Cai Yang,Li Wan Hua,He Wei Ming,Zhao Zhi Ying,Zhu Wen Jie,Wang Qiang,Mai Xinyi,Liu Jun,Lee Hon Cheung,Stjepanovic Goran,Zhang Hongmin,Zhao Yong Juan
Sterile alpha (SAM) and Toll/interleukin-1 receptor (TIR) motif containing 1 (SARM1) is an autoinhibitory NAD-consuming enzyme that is activated by the accumulation of nicotinamide mononucleotide (NMN) during axonal injury. Its activation mechanism is not fully understood. Here, we generate a nanobody, Nb-C6, that specifically recognizes NMN-activated SARM1. Nb-C6 stains only the activated SARM1 in cells stimulated with CZ-48, a permeant mimetic of NMN, and partially activates SARM1 in vitro and in cells. Cryo-EM of NMN/SARM1/Nb-C6 complex shows an octameric structure with ARM domains bending significantly inward and swinging out together with TIR domains. Nb-C6 binds to SAM domain of the activated SARM1 and stabilized its ARM domain. Mass spectrometry analyses indicate that the activated SARM1 in solution is highly dynamic and that the neighboring TIRs form transient dimers via the surface close to one BB loop. We show that Nb-C6 is a valuable tool for studies of SARM1 activation.
研究领域:
分子生物学
·
神经科学
·
结构生物学
·
细胞生物学
✓ 已验证
DOI
PubMed
高影响因子
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