Search results for: Ke Gao

Items from 1 to 20 out of 208 results

article

Structural Fusion Yields Guest Acceptors that Enable Ternary Organic Solar Cells with 18.77 % Efficiency

Fei Meng, Ying Qin, Yiting Zheng, Zhihan Zhao, more

Angewandte Chemie International Edition > 62 > 11 > n/a - n/a

The design and selection of a suitable guest acceptor are particularly important for improving the photovoltaic performance of ternary organic solar cells (OSCs). Herein, we designed and successfully synthesized two asymmetric silicon–oxygen bridged guest acceptors, which featured distinct blue‐shifted absorption, upshifted lowest unoccupied molecular orbital energy levels, and larger dipole moments...

article

Structural Fusion Yields Guest Acceptors that Enable Ternary Organic Solar Cells with 18.77 % Efficiency

Fei Meng, Ying Qin, Yiting Zheng, Zhihan Zhao, more

Angewandte Chemie > 135 > 11 > n/a - n/a

article

Enhanced Performance via π‐Bridge Alteration of Porphyrin‐Based Donors for All‐Small‐Molecule Organic Solar Cells

Haojiang Shen, Yi Ren, Jianfeng Li, Yixuan Xu, more

Chinese Journal of Chemistry > 41 > 6 > 644 - 650

All‐small‐molecule organic solar cells (ASM OSCs) are promising for commercial application due to the well‐defined chemical structures, convenient purifying process and low batch‐to‐batch variation. However, the similarity of molecule structures between small molecule donors and acceptors makes a hard regulation of their blend morphology, which will limit the efficiency. One of the efficient approaches...

article

A rare case of spindle cell neoplasm with NTRK‐fusion in central nervous system

Huilin Gong, Ke Gao, Ping Mao, Shaohui Ma, more

Pathology International > 73 > 1 > 52 - 54

article

Effects of elevated CO₂ and warming on the root‐associated microbiota in an agricultural ecosystem

Ke Gao, Zhenbo Mao, Enxi Meng, Jie Li, more

Environmental Microbiology > 24 > 12 > 6252 - 6266

Plant root‐associated microbial communities profoundly affect plant nutrition and productivity. Although elevated atmospheric CO₂ and warming affect above‐ and belowground plant processes, it remains unclear how root‐associated microbial communities respond to elevated CO₂ and warming. In this study, an open‐air field experiment was conducted to assay the interactive effects of elevated CO₂ (500 ppm)...

article

Recent Progress in Design of Organic Electro‐optic Materials with Ultrahigh Electro‐optic Activities^†

Huajun Xu, Yanna Sun, Yuanyuan Kan, Ke Gao

Chinese Journal of Chemistry > 40 > 24 > 3001 - 3012

Rationally designed organic electro‐optic (OEO) materials demonstrate ultra‐large electro‐optic (EO) activities, affording inorganic‐organic hybrid photonic devices with low drive voltage, large bandwidth, low energy consumption, and small footprint. OEO materials hold the potential to achieve EO coefficients (r₃₃) over 1000 pm/V. Over the past decade, however, the best performance of OEO materials...

article

Influences of methane and propane on the explosion characteristics of polymethyl methacrylate and acrylonitrile butadiene styrene dusts

Jianwei Cheng, Chang Qi, Jing Zhang, Peitao Zhao, more

Process Safety Progress > 41 > 2 > 384 - 394

Polymethyl methacrylate (PMMA) and acrylonitrile butadiene styrene copolymers (ABS) are widely applied to industrial production, with the risk of explosion mixed with combustible gas increasing gradually. A 20 L spherical explosive device was used to study the variation pattern of the explosion characteristics of four gas–dust mixtures: methane/PMMA, methane/ABS, propane/PMMA, and propane/ABS mixtures...

article

The Molecular Ordering and Double‐Channel Carrier Generation of Nonfullerene Photovoltaics within Multi‐Length‐Scale Morphology

Jinqiu Xu, Sae Byeok Jo, Xiankai Chen, Guanqing Zhou, more

Advanced Materials > 34 > 16 > n/a - n/a

The success of nonfullerene acceptor (NFA) solar cells lies in their unique physical properties beyond the extended absorption and suitable energy levels. The current study investigates the morphology and photophysical behavior of PBDB‐T donor blending with ITIC, 4TIC, and 6TIC acceptors. Single‐crystal study shows that the π–π stacking and side‐chain interaction dictate molecular assembly, which...

article

Influence of overfire air rate of the two‐channel overfire air on flow and combustion characteristics in a 600‐MWe boiler

Haopeng Wang, Shuguang Ti, Haoze Jin, Hong Wang, more

Asia‐Pacific Journal of Chemical Engineering > 17 > 1 > n/a - n/a

To solve the problem of high NO_x emission of 600‐MWe boilers in power plants, we established a cold gas–solid modeling testbed scaled by 1:5 for two‐channel overfire air (OFA). A phase‐Doppler anemometer was used to measure the characteristics of the outlet flow field of the two‐channel OFA under different OFA rates. We also verified the industrial feasibility of this testbed under loads of 300 and...

article

Bromodomain‐containing protein 9 is a prognostic biomarker associated with immune infiltrates and promotes tumor malignancy through activating notch signaling pathway in negative HIF‐2α clear cell renal cell carcinoma

Weijuan Lou, Ke Gao, Chenyue Xu, Qingquan Li

IUBMB Life > 73 > 11 > 1334 - 1347

HIF‐2α selective inhibitor showed successful efficacy in sensitive clear cell renal cell carcinoma (ccRCC) presenting higher levels of HIF‐2α compared to resistant tumors with low level of HIF‐2α (negative HIF‐2α ccRCC). Currently, negative HIF‐2α ccRCC lacks truly effective therapeutic agents to improve the outcomes. Bromodomain‐containing protein 9 (BRD9) plays a critical role in human hepatocellular...

article

Metal‐to‐Ligand Ratio‐Dependent Chemodivergent Asymmetric Synthesis

Min Zheng, Ke Gao, Haitao Qin, Guigen Li, more

Angewandte Chemie > 133 > 42 > 23074 - 23081

Chemodivergent asymmetric synthesis was achieved by tuning the metal‐to‐ligand ratio in an organometallic catalytic system. Using N‐(aroyloxy)phthalimide as the precursor of either an oxygen‐centered aroyloxy radical or a nitrogen‐centered phthalimidyl radical, enantioselective oxocyanation or aminocyanation of alkenes was achieved separately through a dual photoredox and copper catalysis. The metal‐to‐ligand...

article

Metal‐to‐Ligand Ratio‐Dependent Chemodivergent Asymmetric Synthesis

Min Zheng, Ke Gao, Haitao Qin, Guigen Li, more

Angewandte Chemie International Edition > 60 > 42 > 22892 - 22899

article

grasviq: an image analysis framework for automatically quantifying vein number and morphology in grass leaves

Janlo M. Robil, Ke Gao, Claire M. Neighbors, Michael Boeding, more

The Plant Journal > 107 > 2 > 629 - 648

Beyond facilitating transport and providing mechanical support to the leaf, veins have important roles in the performance and productivity of plants and the ecosystem. In recent decades, computational image analysis has accelerated the extraction and quantification of vein traits, benefiting fields of research from agriculture to climatology. However, most of the existing leaf vein image analysis...

article

Evaluation of sublethal and transgenerational effects of sulfoxaflor on Aphis gossypii via life table parameters and 16S rRNA sequencing

Jiao Shang, Yong‐Sheng Yao, Xiang‐Zhen Zhu, Li Wang, more

Pest Management Science > 77 > 7 > 3406 - 3418

BACKGROUND Aphis gossypii, a polyphagous and recurrent pest induced by pesticides, causes tremendous loss crop yields each year. Previous studies on the mechanism of pesticide‐induced sublethal effects mainly focus on the gene level. The symbiotic bacteria are also important participants of this mechanism, but their roles in hormesis are still unclear. RESULTS In this study, life table parameters...

article

Understanding Mechanistic Differences between 3‐Diazoindolin‐2‐Imines and N‐Sulfonyl‐1,2,3‐Triazoles in the Rh₂(II)‐Catalyzed Reactions with Nitrosoarenes

Rui Fu, Luyao Kou, Ke Gao, Shaofang Zhou, more

Chinese Journal of Chemistry > 39 > 6 > 1565 - 1572

The employment of α‐iminometallocarbenes to construct valuable N‐containing compounds has attracted significant research interest. Herein, the nucleophilic addition of nitrosoarenes with the α‐imino rhodium carbene species (I), which is derived from Rh₂(II)‐catalyzed denitrogenation of 3‐diazoindolin‐2‐imines, to produce synthetically useful 2‐iminoindolin‐nitrones is described. Mechanistically, the...

article

Geographic variation in sexual communication in the cotton bollworm, Helicoverpa armigera

Ke Gao, Luis M Torres‐Vila, Myron P Zalucki, Yiping Li, more

Pest Management Science > 76 > 11 > 3596 - 3605

BACKGROUND Geographic variation in male response to sex pheromone lures has been studied in the field in a number of moth species. However, only a few studies have investigated geographic variation in female calling and sex pheromone under field conditions. For an effective field implementation of sex pheromone lures, it is essential to know the local sex pheromone blend and local timing of sexual...

article

Low‐Bandgap Porphyrins for Highly Efficient Organic Solar Cells: Materials, Morphology, and Applications

Ke Gao, Yuanyuan Kan, Xuebin Chen, Feng Liu, more

Advanced Materials > 32 > 32 > n/a - n/a

With developments in materials, thin‐film processing, fine‐tuning of morphology, and optimization of device fabrication, the performance of organic solar cells (OSCs) has improved markedly in recent years. Designing low‐bandgap materials has been a focus in order to maximize solar energy conversion. However, there are only a few successful low‐bandgap donor materials developed with near‐infrared (NIR)...

article

Oxidative Ring‐Opening of 1H‐Pyrazol‐5‐amines and Its Application in Constructing Pyrazolo–Pyrrolo–Pyrazine Scaffolds by Domino Cyclization

Lei Pan, Feng Jin, Rui Fu, Ke Gao, more

European Journal of Organic Chemistry > 2020 > 19 > 2956 - 2961

Herein, an oxidative ring‐opening of 1H‐pyrazol‐5‐amines to form 3‐diazenylacrylonitrile derivatives under mild and transition‐metal‐free conditions is described. In addition, the nucleophilic addition of deprotonated 1H‐pyrrole‐2‐carbaldehydes to the vinyl moiety of the yielded 3‐diazenylacrylonitriles could trigger domino cyclization to afford the 3H‐pyrazolo[3,4‐e]pyrrolo[1,2‐a]pyrazine derivatives...

article

Synthesis of 2‐(3‐Arylallylidene)‐3‐oxindoles via Dirhodium(II)‐Catalyzed Reaction of 3‐Diazoindolin‐2‐imines with 1‐Aryl‐Substituted Allylic Alcohols and Computational Insights

Ke Gao, Luyao Kou, Rui Fu, Xiaoguang Bao

Advanced Synthesis & Catalysis > 362 > 6 > 1292 - 1297

A straightforward approach for the synthesis of 2‐(3‐arylallylidene)‐3‐oxindoles has been achieved by the dirhodium(II)‐catalyzed reaction of 3‐diazoindolin‐2‐imines with 1‐aryl‐substituted allylic alcohols. This protocol employs easily accessible feedstocks to produce oxindole derivatives, which might be applicable in the dye industry. DFT calculations were carried out to gain a mechanistic insight...

article

Graphdiyne Derivative as Multifunctional Solid Additive in Binary Organic Solar Cells with 17.3% Efficiency and High Reproductivity

Le Liu, Yuanyuan Kan, Ke Gao, Jianxiao Wang, more

Advanced Materials > 32 > 11 > n/a - n/a

Morphology tuning of the blend film in organic solar cells (OSCs) is a key approach to improve device efficiencies. Among various strategies, solid additive is proposed as a simple and new way to enable morphology tuning. However, there exist few solid additives reported to meet such expectations. Herein, chlorine‐functionalized graphdiyne (GCl) is successfully applied as a multifunctional solid additive...

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INFONA - science communication portal

Search results for: Ke Gao

Structural Fusion Yields Guest Acceptors that Enable Ternary Organic Solar Cells with 18.77 % Efficiency

Structural Fusion Yields Guest Acceptors that Enable Ternary Organic Solar Cells with 18.77 % Efficiency

Enhanced Performance via π‐Bridge Alteration of Porphyrin‐Based Donors for All‐Small‐Molecule Organic Solar Cells

A rare case of spindle cell neoplasm with NTRK‐fusion in central nervous system

Effects of elevated CO₂ and warming on the root‐associated microbiota in an agricultural ecosystem

Recent Progress in Design of Organic Electro‐optic Materials with Ultrahigh Electro‐optic Activities^†

Influences of methane and propane on the explosion characteristics of polymethyl methacrylate and acrylonitrile butadiene styrene dusts

The Molecular Ordering and Double‐Channel Carrier Generation of Nonfullerene Photovoltaics within Multi‐Length‐Scale Morphology

Influence of overfire air rate of the two‐channel overfire air on flow and combustion characteristics in a 600‐MWe boiler

Bromodomain‐containing protein 9 is a prognostic biomarker associated with immune infiltrates and promotes tumor malignancy through activating notch signaling pathway in negative HIF‐2α clear cell renal cell carcinoma

Metal‐to‐Ligand Ratio‐Dependent Chemodivergent Asymmetric Synthesis

Metal‐to‐Ligand Ratio‐Dependent Chemodivergent Asymmetric Synthesis

grasviq: an image analysis framework for automatically quantifying vein number and morphology in grass leaves

Evaluation of sublethal and transgenerational effects of sulfoxaflor on Aphis gossypii via life table parameters and 16S rRNA sequencing

Understanding Mechanistic Differences between 3‐Diazoindolin‐2‐Imines and N‐Sulfonyl‐1,2,3‐Triazoles in the Rh₂(II)‐Catalyzed Reactions with Nitrosoarenes

Geographic variation in sexual communication in the cotton bollworm, Helicoverpa armigera

Low‐Bandgap Porphyrins for Highly Efficient Organic Solar Cells: Materials, Morphology, and Applications

Oxidative Ring‐Opening of 1H‐Pyrazol‐5‐amines and Its Application in Constructing Pyrazolo–Pyrrolo–Pyrazine Scaffolds by Domino Cyclization

Synthesis of 2‐(3‐Arylallylidene)‐3‐oxindoles via Dirhodium(II)‐Catalyzed Reaction of 3‐Diazoindolin‐2‐imines with 1‐Aryl‐Substituted Allylic Alcohols and Computational Insights

Graphdiyne Derivative as Multifunctional Solid Additive in Binary Organic Solar Cells with 17.3% Efficiency and High Reproductivity

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