Search results for: Zhi Qiao

Items from 1 to 20 out of 128 results

article

Humidity‐Insensitive, Large‐Area‐Applicable, Hot‐Air‐Assisted Ambient Fabrication of 2D Perovskite Solar Cells

Ke Meng, Bin Chen, Mingyue Xiao, Yufeng Zhai, more

Advanced Materials > 35 > 11 > n/a - n/a

2D layered perovskites (LPs) have shown great potential to deliver high‐performance photovoltaic devices with long‐term stability. Despite many signs of progress being made in film quality and device performance, LP films are mainly processed in strict conditions and through non‐scalable techniques. Here, the hot‐air‐assisted ambient fabrication technique is introduced to prepare LP films for efficient...

article

Carboxylic Groups via Postpolymerization Modification of Polythiophene and their Influence on the Performance of a Polymeric MALDI Matrix

Zhi Qiao, Kilian Horatz, Po Yuen Ho, Andrei Mitrofanov, more

Macromolecular Chemistry and Physics > 224 > 1 > n/a - n/a

Matrix‐assisted laser desorption/ionization mass spectrometry (MALDI MS) requires a matrix, and traditionally small organic matrices (SOMs) carrying acidic or basic functional groups are used. However, the analyte ionization via secondary processes in the gas‐phase seems to be more important than primary processes. For conjugated polymeric matrices, an even more complicated picture emerges due to...

article

Data‐driven modeling and control of an X‐ray bimorph adaptive mirror

Gautam Gunjala, Antoine Wojdyla, Kenneth A. Goldberg, Zhi Qiao, more

Journal of Synchrotron Radiation > 30 > 1 > 57 - 64

Adaptive X‐ray mirrors are being adopted on high‐coherent‐flux synchrotron and X‐ray free‐electron laser beamlines where dynamic phase control and aberration compensation are necessary to preserve wavefront quality from source to sample, yet challenging to achieve. Additional difficulties arise from the inability to continuously probe the wavefront in this context, which demands methods of control...

article

Cellular activation status in femoral shaft fracture hematoma following different reaming techniques – A large animal model

Michel Paul Johan Teuben, Sascha Halvachizadeh, Yannik Kalbas, Zhi Qiao, more

Journal of Orthopaedic Research® > 40 > 12 > 2822 - 2830

The local inflammatory impact of different reaming protocols in intramedullary nailing has been sparsely investigated. We examined the effect of different reaming protocols on fracture hematoma (FH) immunological characteristics in pigs. To do so, a standardized midshaft femur fracture was induced in adult male pigs. Fractures were treated with conventional reamed femoral nailing (group RFN, n = 6);...

article

Phosphoproteomics of extracellular vesicles integrated with multiomics analysis reveals novel kinase networks for lung cancer

Zhi Qiao, Yan Kong, Yan Zhang, Liqiang Qian, more

Molecular Carcinogenesis > 61 > 12 > 1116 - 1127

Phosphorylation regulates the functions of proteins and aberrant phosphorylation often leads to a variety of diseases, including cancers. Extracellular vesicles (EVs) are important messengers in the microenvironment and their proteome contributes to cancer genesis and metastasis, while the kinases that driving EVs proteins' phosphorylation are less known. Clinical tissue samples from 13 patients with...

article

3D Bioprinted GelMA‐Nanoclay Hydrogels Induce Colorectal Cancer Stem Cells Through Activating Wnt/β‐Catenin Signaling (Small 18/2022)

Yanmei Zhang, Zixuan Wang, Qifan Hu, Hao Luo, more

Small > 18 > 18 > n/a - n/a

Cancer Stem Cells In article number 2200364, Zhuo Xiong and co‐workers report that 3D bioprinted GelMA‐nanoclay hybrid hydrogels can induce and enrich colorectal cancer stem cells (CSCs) by promoting the formation of spheroids by activating Wnt/β‐catenin signaling. These spheroids can be isolated easily and are promising CSC enrichment models with increased stemness, high consistency, yield and efficiency...

article

3D Bioprinted GelMA‐Nanoclay Hydrogels Induce Colorectal Cancer Stem Cells Through Activating Wnt/β‐Catenin Signaling

Yanmei Zhang, Zixuan Wang, Qifan Hu, Hao Luo, more

Small > 18 > 18 > n/a - n/a

Cancer stem cells (CSCs) are a rare cell population in tumors that are responsible for tumor recurrence and metastasis. They are a priority as therapeutic targets, however, assays targeting CSCs have been limited by expanding and maintaining CSCs in vitro. Here, the authors find that gelatin methacryloyl (GelMA)‐nanoclay hybrid hydrogels can induce and enrich colorectal CSCs assisted by three‐dimensional...

article

Holdups in Nitride MXene's Development and Limitations in Advancing the Field of MXene

Denis Johnson, Zhi Qiao, Ekenedilichukwu Uwadiunor, Abdoulaye Djire

Small > 18 > 17 > n/a - n/a

As nanomaterials are becoming a key component in various electronics, 2D nanomaterials are emerging and attracting tremendous attention in the scientific community due to their unique physical, chemical, and structural properties. In recent years, a new family of 2D carbides and nitrides, known as MXenes, has become the center of attention for many electrochemical energy storage and conversion systems...

article

Tailoring Interlayer Spacers for Efficient and Stable Formamidinium‐Based Low‐Dimensional Perovskite Solar Cells

Lei Cheng, Ke Meng, Zhi Qiao, Yufeng Zhai, more

Advanced Materials > 34 > 4 > n/a - n/a

2D Dion–Jacobson (DJ) perovskite solar cells generally show mediocre device performances as they are restrained by their defective film quality. The rigid diammonium organic interlayer spacers are intolerant to lattice mismatches, which induces defects and distortions and ultimately deteriorates the optoelectronic properties. Herein, a secondary interlayer spacer is introduced into formamidinium (FA)‐based...

article

Triflic Imide‐Catalyzed Glycosylation of Disarmed Glycosyl ortho‐Isopropenylphenylacetates and ortho‐Isopropenylbenzyl Thioglycosides

Zhi Qiao, Peng Wang, Jingxuan Ni, Dongwei Li, more

European Journal of Organic Chemistry > 2022 > 2 > n/a - n/a

Glycosylation reaction involving the coupling of a glycosyl donor with a glycosyl acceptor is one of the cornerstones of chemical preparation of pure glycans and glycoconjugates of biological relevance. Catalytic glycosylation of glycosyl ester donors and thioglycosides is an attractive but underexplored topic in carbohydrate chemistry. Herein, triflic imide (Tf₂NH)‐catalyzed glycosylation of various...

article

Azobenzene‐isoxazoline as photopharmacological ligand for optical control of insect GABA receptor and behavior

Zhi Qiao, Yunfan Ji, Yongchao Zhang, Zhong Li, more

Pest Management Science > 78 > 2 > 467 - 474

BACKGROUND Photopharmacology is a fast‐growing photonics‐based technology, which realizes the high‐resolution regulation of drugs in time and space through light. The purpose of this research was to introduce photochromic groups into the isoxazoline structure to realize the regulation of γ‐Aminobutyric acid receptors (GABARs) targeting insect behavior. RESULTS Azobenzene‐Fluralaner analogs ABF02,...

article

Humidity‐Induced Defect‐Healing of Formamidinium‐Based Perovskite Films

Ke Meng, Chunwu Wang, Zhi Qiao, Yufeng Zhai, more

Small > 17 > 50 > n/a - n/a

Formamidinium (FA)‐based perovskite material holds great potential to deliver highly efficient commercial solar cells. However, the FA‐based perovskite films are commonly processed under a strictly controlled environment, which would eventually hinder their way to commercialization. Herein, a systematic study is conducted to investigate the sequential deposition of FA‐based perovskite films that are...

article

Advanced Nanocarbons for Enhanced Performance and Durability of Platinum Catalysts in Proton Exchange Membrane Fuel Cells

Zhi Qiao, Chenyu Wang, Yachao Zeng, Jacob S. Spendelow, more

Small > 17 > 48 > n/a - n/a

Insufficient stability of current carbon supported Pt and Pt alloy catalysts is a significant barrier for proton‐exchange membrane fuel cells (PEMFCs). As a primary degradation cause to trigger Pt nanoparticle migration, dissolution, and aggregation, carbon corrosion remains a significant challenge. Compared with enhancing Pt and PtM alloy particle stability, improving support stability is rather...

article

Atomic Structure Evolution of Pt–Co Binary Catalysts: Single Metal Sites versus Intermetallic Nanocrystals

Xing Li, Yanghua He, Shaobo Cheng, Boyang Li, more

Advanced Materials > 33 > 48 > n/a - n/a

Due to their exceptional catalytic properties for the oxygen reduction reaction (ORR) and other crucial electrochemical reactions, PtCo intermetallic nanoparticle (NP) and single atomic (SA) Pt metal site catalysts have received considerable attention. However, their formation mechanisms at the atomic level during high‐temperature annealing processes remain elusive. Here, the thermally driven structure...

article

Mit N‐heterocyclischen Carbenen funktionalisierte Poly(3‐hexylthiophene) als robuste und leitfähige Liganden zur Stabilisierung von Goldnanopartikeln

Ningwei Sun, Shi‐Tong Zhang, Frank Simon, Anja Maria Steiner, more

Angewandte Chemie > 133 > 8 > 3958 - 3963

Seit kurzem werden N‐heterocyclische Carbene (NHCs) als Ankergruppen verwendet, um organische Liganden an kolloidales Gold (d. h. Goldnanopartikel, Au NPs) zu binden. Die Arbeiten beschränken sich jedoch bisher auf nicht‐konjugierte Liganden, konzentrieren sich also allein auf die Ausnutzung des Stabilitätsaspekts. Bei der Verwendung von NHCs zur Verknüpfung von Au NPs mit elektronisch aktiven organischen...

article

Poly(3‐hexylthiophene)s Functionalized with N‐Heterocyclic Carbenes as Robust and Conductive Ligands for the Stabilization of Gold Nanoparticles

Ningwei Sun, Shi‐Tong Zhang, Frank Simon, Anja Maria Steiner, more

Angewandte Chemie International Edition > 60 > 8 > 3912 - 3917

Recently, N‐heterocyclic carbenes (NHCs) are explored as anchor groups to bind organic ligands to colloidal gold (i.e. gold nanoparticles, Au NPs), yet these efforts are confined to non‐conjugated ligands so far—that is, focused solely on exploiting the stability aspect. Using NHCs to link Au NPs and electronically active organic components, for example, conjugated polymers (CPs), will allow capitalizing...

article

Highly Thermostable and Efficient Formamidinium‐Based Low‐Dimensional Perovskite Solar Cells

Lei Cheng, Zhou Liu, Shunde Li, Yufeng Zhai, more

Angewandte Chemie International Edition > 60 > 2 > 856 - 864

Currently, most two‐dimensional (2D) metal halide perovskites are of the Ruddlesden–Popper type and contain the thermally unstable methylammonium (MA) molecules, which leads to inferior photovoltaic performance and mild stability. Here we report a new type of MA‐free formamidinium (FA) based low‐dimensional perovskites, featuring a general formula of (PDA)(FA)_n−1Pb_nI_3n+1 with propane‐1,3‐diammonium...

article

Highly Thermostable and Efficient Formamidinium‐Based Low‐Dimensional Perovskite Solar Cells

Lei Cheng, Zhou Liu, Shunde Li, Yufeng Zhai, more

Angewandte Chemie > 133 > 2 > 869 - 877

article

Interfacial Structure and Composition Managements for High‐Performance Methylammonium‐Free Perovskite Solar Cells

Shunde Li, Zhou Liu, Zhi Qiao, Xiao Wang, more

Advanced Functional Materials > 30 > 52 > n/a - n/a

The methylammonium (MA)‐free perovskite solar cells (PSCs) have drawn broad attention due to their excellent thermostability. However, the efficiency of these devices is inferior to most state‐of‐the‐art PSCs. Herein, the photovoltaic performance of the MA‐free PSCs is enhanced by constructing interfacial capping layers with a pair of alkylammonium halides, n‐propylammonium (PA) iodide and propane‐1,3‐diammonium...

article

Chemical Vapor Deposition for Atomically Dispersed and Nitrogen Coordinated Single Metal Site Catalysts

Shengwen Liu, Maoyu Wang, Xiaoxuan Yang, Qiurong Shi, more

Angewandte Chemie > 132 > 48 > 21882 - 21889

Atomically dispersed and nitrogen coordinated single metal sites (M‐N‐C, M=Fe, Co, Ni, Mn) are the popular platinum group‐metal (PGM)‐free catalysts for many electrochemical reactions. Traditional wet‐chemistry catalyst synthesis often requires complex procedures with unsatisfied reproducibility and scalability. Here, we report a facile chemical vapor deposition (CVD) strategy to synthesize the promising...

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INFONA - science communication portal

Search results for: Zhi Qiao

Humidity‐Insensitive, Large‐Area‐Applicable, Hot‐Air‐Assisted Ambient Fabrication of 2D Perovskite Solar Cells

Carboxylic Groups via Postpolymerization Modification of Polythiophene and their Influence on the Performance of a Polymeric MALDI Matrix

Data‐driven modeling and control of an X‐ray bimorph adaptive mirror

Cellular activation status in femoral shaft fracture hematoma following different reaming techniques – A large animal model

Phosphoproteomics of extracellular vesicles integrated with multiomics analysis reveals novel kinase networks for lung cancer

3D Bioprinted GelMA‐Nanoclay Hydrogels Induce Colorectal Cancer Stem Cells Through Activating Wnt/β‐Catenin Signaling (Small 18/2022)

3D Bioprinted GelMA‐Nanoclay Hydrogels Induce Colorectal Cancer Stem Cells Through Activating Wnt/β‐Catenin Signaling

Holdups in Nitride MXene's Development and Limitations in Advancing the Field of MXene

Tailoring Interlayer Spacers for Efficient and Stable Formamidinium‐Based Low‐Dimensional Perovskite Solar Cells

Triflic Imide‐Catalyzed Glycosylation of Disarmed Glycosyl ortho‐Isopropenylphenylacetates and ortho‐Isopropenylbenzyl Thioglycosides

Azobenzene‐isoxazoline as photopharmacological ligand for optical control of insect GABA receptor and behavior

Humidity‐Induced Defect‐Healing of Formamidinium‐Based Perovskite Films

Advanced Nanocarbons for Enhanced Performance and Durability of Platinum Catalysts in Proton Exchange Membrane Fuel Cells

Atomic Structure Evolution of Pt–Co Binary Catalysts: Single Metal Sites versus Intermetallic Nanocrystals

Mit N‐heterocyclischen Carbenen funktionalisierte Poly(3‐hexylthiophene) als robuste und leitfähige Liganden zur Stabilisierung von Goldnanopartikeln

Poly(3‐hexylthiophene)s Functionalized with N‐Heterocyclic Carbenes as Robust and Conductive Ligands for the Stabilization of Gold Nanoparticles

Highly Thermostable and Efficient Formamidinium‐Based Low‐Dimensional Perovskite Solar Cells

Highly Thermostable and Efficient Formamidinium‐Based Low‐Dimensional Perovskite Solar Cells

Interfacial Structure and Composition Managements for High‐Performance Methylammonium‐Free Perovskite Solar Cells

Chemical Vapor Deposition for Atomically Dispersed and Nitrogen Coordinated Single Metal Site Catalysts

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