Wyniki wyszukiwania dla: Kai Chen

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Spin‐Coated and Vacuum‐Processed Hole‐Extracting Self‐Assembled Multilayers with H‐Aggregation for High‐Performance Inverted Perovskite Solar Cells

Wenlin Jiang, Deng Wang, Wansong Shang, Yanxun Li, więcej

Angewandte Chemie > 136 > 45 > n/a - n/a

We report a highly crystalline self‐assembled multilayer (SAMUL) that is fundamentally different from the conventional monolayer or disordered bilayer used for hole‐extraction in inverted perovskite solar cells (PSCs). The SAMUL can be easily formed on ITO substrate to establish better surface coverage to enhance the performance and stability of PSCs. A detailed structure‐property‐performance relationship...

artykuł

Spin‐Coated and Vacuum‐Processed Hole‐Extracting Self‐Assembled Multilayers with H‐Aggregation for High‐Performance Inverted Perovskite Solar Cells

Wenlin Jiang, Deng Wang, Wansong Shang, Yanxun Li, więcej

Angewandte Chemie International Edition > 63 > 45 > n/a - n/a

artykuł

Frenkel and Charge‐Transfer Excitonic Couplings Strengthened by Thiophene‐Type Solvent Enables Binary Organic Solar Cells with 19.8 % Efficiency

Xin Song, Le Mei, Xinjie Zhou, Hongxiang Li, więcej

Angewandte Chemie International Edition > 63 > 44 > n/a - n/a

Overcoming the trade‐off between short‐circuited current (J_sc) and open‐circuited voltage (V_oc) is important to achieving high‐efficiency organic solar cells (OSCs). Previous works modulated the energy gap between Frenkel local exciton (LE) and charge‐transfer (CT) exciton, which served as the driving force of exciton splitting. Differently, our current work focuses on the modulation of LE‐CT excitonic...

artykuł

Frenkel and Charge‐Transfer Excitonic Couplings Strengthened by Thiophene‐Type Solvent Enables Binary Organic Solar Cells with 19.8 % Efficiency

Xin Song, Le Mei, Xinjie Zhou, Hongxiang Li, więcej

Angewandte Chemie > 136 > 44 > n/a - n/a

artykuł

Seasonal patterns of juvenile fish assemblages in the surf zones of tropical sandy beaches along Gaolong Bay, Hainan Island, China

Wentong Xia, Zhongbo Miao, Kai Chen, Ying Lu, więcej

Diversity and Distributions > 30 > 10 > n/a - n/a

Aim Surf zones are crucial nursery habitats for the early life stages of fish species associated with typical coastal ecosystems. However, little is known about the temporal patterns and drivers of fish assemblages in tropical surf zones. This study aimed to assess the (1) main changes in fish community structure throughout 1 year, (2) seasonal dynamic patterns in fish assemblages, and (3) key factors...

artykuł

Simultaneous Fresh Water Collection and Li⁺ Selective Adsorption Enabled by A Salt‐Resistant Separated Solar Evaporator

Kai Chen, Lingxiao Li, Bucheng Li, Yanfei Yang, więcej

Advanced Functional Materials > 34 > 37 > n/a - n/a

Solar‐driven interfacial evaporation (SIE) of brine may solve the fresh water shortage issue but suffers from salt‐fouling. Meanwhile, adsorption can extract valuable lithium (Li) from brine but is hampered by low adsorption capacity/rate, additional energy input and low selectivity, etc. Here, as a proof‐of‐concept, the design of a separated solar evaporator (S‐evaporator) is reported for simultaneously...

artykuł

Axial Ligand Enables Synthesis of Allenylsilane through Dirhodium(II) Catalysis

Wendeng Li, Rui Wu, Hao Ruan, Bo Xiao, więcej

Angewandte Chemie International Edition > 63 > 38 > n/a - n/a

Described herein is a dirhodium(II)‐catalyzed silylation of propargyl esters with hydrosilanes, using tertiary amines as axial ligands. By adopting this strategy, a range of versatile and useful allenylsilanes can be achieved with good yields. This reaction not only represents a S_N2′‐type silylation of the propargyl derivatives bearing a terminal alkyne moiety to synthesize allenylsilanes from simple...

artykuł

Axial Ligand Enables Synthesis of Allenylsilane through Dirhodium(II) Catalysis

Wendeng Li, Rui Wu, Hao Ruan, Bo Xiao, więcej

Angewandte Chemie > 136 > 38 > n/a - n/a

artykuł

Tandem Electrocatalytic Reduction of Nitrite to Ammonia on Rhodium–Copper Single Atom Alloys

Jiaqi Xiang, Chaofan Qiang, Shiyao Shang, Kai Chen, więcej

Advanced Functional Materials > 34 > 36 > n/a - n/a

Electrocatalytic reduction of NO₂⁻ to NH₃ (NO₂RR) presents a fascinating approach for simultaneously migrating NO₂⁻ pollutants and producing valuable NH₃. In this study, single‐atom Rh‐alloyed copper (CuRh₁) is explored as a highly active and selective catalyst toward the NO₂RR. Combined theoretical calculations and in situ FTIR/EPR spectroscopic experiments uncover the synergistic effect of Rh₁ and...

artykuł

Species–environment sorting explains latitudinal patterns in spatiotemporal β‐diversity for freshwater macroinvertebrates

Siwen He, Beixin Wang, Kai Chen, Ning Li, więcej

Ecography > 2024 > 9 > n/a - n/a

Understanding how and why β‐diversity varies along latitude is a long‐standing challenge in community ecology and rarely addressed in both space and time. We aimed to explore the spatiotemporal variations in macroinvertebrate β‐diversity and their underlying drivers in eight biogeographic regions covering a substantial latitudinal gradient of more than 40 degrees. By combining β‐diversity partitioning...

artykuł

The electrical properties and in vitro osteogenic properties of 3D‐printed MgO@BT/HA piezoelectric ceramic disk

Kai Chen, Zhenyao Qin, Mingjun Zhang, Lin Wang, więcej

Journal of the American Ceramic Society > 107 > 11 > 7441 - 7451

The repair of bone defects from various causes remains a significant challenge in clinical settings. Piezoelectric materials have been demonstrated to promote osteogenic differentiation, among which barium titanate (BT) has been widely reported. Magnesium oxide (MgO) dopants not only enhance the piezoelectric properties but also stimulate the osteogenic and angiogenic properties in stem cells. In...

artykuł

Conjugation‐Broken Dimer Acceptors Enable High‐Efficiency, Stable, and Flexibility‐Robust Organic Solar Cells

Yun Li, Le Mei, Zhongwei Ge, Chunhui Liu, więcej

Advanced Materials > 36 > 35 > n/a - n/a

Dimer acceptors in organic solar cells (OSCs) offer distinct advantages, including a well‐defined molecular structure and excellent batch‐to‐batch reproducibility. Their high glass transition temperature (T_g) aids in achieving an optimal kinetic morphology, thereby enhancing device stability. Currently, most of dimer acceptor materials are linked with conjugated units in order to obtain high power...

artykuł

Realization of Fully High‐Spin State and Strong Ferromagnetism in LaCoO₃ Monolayer

Junhua Liu, Liang Si, Qinghua Zhang, Xiao Wang, więcej

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

Perovskite LaCoO₃ is a subject of extensive and ongoing investigation due to the delicate competition between high‐spin (HS) and low‐spin (LS) states of Co³⁺. On the other hand, their indistinct free energy boundary poses a significant challenge to annihilate the magnetically/electrically inert LS Co³⁺ for yielding fully HS state. Here, electronic transformation from the conventional isovalent mixed...

artykuł

Building endoplasmic reticulum stress‐related LncRNAs signatures of lung adenocarcinoma

Kai Chen, Peiling Dai, Lizhong Gu

The Journal of Gene Medicine > 26 > 8 > n/a - n/a

Background Endoplasmic reticulum stress (ERS) could be a strategy for treating malignant tumors. Moreover, long noncoding RNAs (lncRNAs) can promote tumorigenesis and progression, and forecast the prognosis of cancers. Nevertheless, the prognostic value of ERS‐related lncRNAs has not been reported in lung adenocarcinoma (LUAD). Methods The messenger RNA (mRNA), microRNA (miRNA) and lncRNA expression...

artykuł

Single‐cell transcriptomes provide insights into expansion of glial cells in Bombyx mori

Xiaojing Liu, Zhongjie Zhang, Bo Hu, Kai Chen, więcej

Insect Science > 31 > 4 > 1041 - 1054

The diversity of cell types in the brain and how these change during different developmental stages, remains largely unknown. The life cycle of insects is short and goes through 4 distinct stages including embryonic, larval, pupal, and adult stages. During postembryonic life, the larval brain transforms into a mature adult version after metamorphosis. The silkworm, Bombyx mori, is a lepidopteran model...

artykuł

Asymmetric Total Synthesis of Alstrostine G Utilizing a Catalytic Asymmetric Desymmetrization Strategy

Nanping Zhang, Cheng Wang, Hailong Xu, Ming Zheng, więcej

Angewandte Chemie International Edition > 63 > 34 > n/a - n/a

A highly effective enantioselective monobenzoylation of 1,3‐diols has been developed for the synthesis of 1,1‐disubstituted tetrahydro‐β‐carbolines. The chemistry has been successfully applied to the asymmetric total synthesis of (+)‐alstrostine G, which also features a cascade Heck/hemiamination reaction enabling facile construction of the pivotal pentacyclic core.

artykuł

Asymmetric Total Synthesis of Alstrostine G Utilizing a Catalytic Asymmetric Desymmetrization Strategy

Nanping Zhang, Cheng Wang, Hailong Xu, Ming Zheng, więcej

Angewandte Chemie > 136 > 34 > n/a - n/a

artykuł

Advanced Hollow Cubic FeCo‐N‐C Cathode Electrocatalyst for Ultrahigh‐Power Aluminum–Air Battery

Zhidong Tian, Yiqi Liang, Kai Chen, Jiyuan Gao, więcej

Small > 20 > 31 > n/a - n/a

The exploration of electrocatalysts toward oxygen reduction reaction (ORR) is pivotal in the development of diverse batteries and fuel cells that rely on ORR. Here, a FeCo‐N‐C electrocatalyst (FeCo–HNC) featuring with atomically dispersed dual metal sites (Fe–Co) and hollow cubic structure is reported, which exhibits high activity for electrocatalysis of ORR in alkaline electrolyte, as evidenced by...

artykuł

Dual Defect Passivation at the Buried Interface for Printable Mesoscopic Perovskite Solar Cells with Reduced Open‐Circuit Voltage Loss

Dang Xu, Dongjie Wang, Jiale Liu, Jianhang Qi, więcej

Small > 20 > 31 > n/a - n/a

Numerous defects exist at the buried interface between the perovskite and adjacent electron transport layers in perovskite solar cells, resulting in severe non‐radiative recombination and excessive open‐circuit voltage (V_OC) loss. Herein, a dual defect passivation strategy utilizing guanidine sulfate (GUA₂SO₄) as an interface modifier is first reported. On the one hand, the SO₄²⁻ preferentially interacts...

artykuł

P‐211: Double Capping Layers Technology For Transparent OLED Display

Qiang Liu, Junwei Liu, Zhimin Yan, Kai Chen, więcej

SID Symposium Digest of Technical Papers > 55 > 1 > 2184 - 2187

With its enhanced display and innovative digital experience, transparent display has gradually penetrated in the fields of culture and education, transportation, and business, and has become one of the important development directions of the next generation display product form. However, in order to improve the transmittance of transparent OLED displays, the scheme of reducing the opening rate is...

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