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Dual-functional POM@IL complex modulate hole transport layer properties and interfacial charge dynamics for highly efficient and stable perovskite solar cells

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Chinese Chemical Letters 2024年第7期35卷 461-464页

作者： Boyuan Hu Jian Zhang Yulin Yang Yayu Dong jiaqi wang Wei wang Kaifeng Lin Debin Xia MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China

The severe interfacial charge recombination as well as the stability issues brought by the Li-TFSI still hinder the commercialization of high-performance perovskite solar cells(PSCs).Here,a polyoxometalates(POMs)-based complex,POM@ionic liquid(IL),is synthesized and applied as an effective additive that simultaneously enhances the performance and stability of *** interactions between POM@IL complex and Li-TFSI inhibit the aggregation of *** synergistic oxidation of POM@IL complex and Li-TFSI towards 2,2,7,7-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9'-spirobifluorene(Spiro-OMeTAD)effectively enhances the electrical properties of hole transport layer film and the photovoltaic performances of *** champion device modified with the POM@IL complex yields an excellent power conversion efficiency(PCE)of 22.73%.Moreover,the incorporation of POM@IL improves the humidity stability of *** storing under high humidity conditions(25℃,60%RH)for 1200 h,the POM@IL modified device retained a remarkable 81.2%of its initial *** work provides new insight into constructing POMs-based materials for high-performance photovoltaic devices.

关键词： Polyoxometalates Ionic liquid Perovskite solar cells Energy alignment Humidity stability

Ionic liquids in transdermal drug delivery system: Current applications and future perspectives

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Chinese Chemical Letters 2023年第3期34卷 113-121页

作者： Yang Zhang Chao Liu jiaqi wang Shoujun Ren Yilin Song Peng Quan Liang Fang Department of Pharmaceutical Sciences Shenyang Pharmaceutical UniversityShenyang 110016China

The transdermal drug delivery(TDD) shows considerable advantages over other administration ***, conventional enhancing permeation methods face a series of challenges owing to barrier function provided by the skin, of which enhancing abilities either are so strong that it results in toxicity and irritation, or too weak to achieve desirable therapeutical effects. To address these issues, it is an urgent need to develop a novel method to overcome the limitations of current measures. Fortunately, in the preceding decades, ionic liquids(ILs) have been extensively studied and increasingly applied in pharmaceutical drug delivery due to their unique physicochemical and biological properties. What is more, tunability of structure resolves the challenges in processing active pharmaceutical ingredient(API) formulation, such as polymorphism and poor solubility of drugs. Thus, the presence of ILs provides an ample design space for the transdermal drug delivery system(TDDS). This review discusses the shortcomings of conventional enhancing permeation methods and introduces the application of ILs in transdermal delivery from three aspects: i) ILs are applied as enhancers to weaken the barrier function of the stratum corneum(SC). ii) As counterions, ILs are combined with API to modify the physicochemical properties of drugs. iii) ILs assist in the design of transdermal preparation for perfecting formulation. This review comprehensively introduces the major breakthroughs made in the applications of ILs, which can serve as guidance to provide novel ideas for formulation scientists who hit the bottleneck in the development of TDD.

关键词： TDD Ionic liquids Skin Permeation enhancers Physicochemical properties

Performance of silicone rubber composites using boron nitride to replace alumina tri‐hydrate

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High Voltage 2021年第3期6卷 480-486页

作者： Xin Chen jiaqi wang Chong Zhang Wei Yang Jun Lin Xingming Bian Shaojian He State Key Laboratory of Advanced Power Transmission Technology Global Energy Interconnection Research InstituteCo.Ltd.BeijingChina State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijingChina

Boron nitride(BN)has attracted increasing attention as a filler using in insulating *** this work,by using an equal amount of BN to replace alumina tri‐hydrate(ATH),various SR/BN/ATH composites were prepared,and for comparison,vinyl tri‐methoxysilane(VTMS)was added to prepare SR/BN/ATH‐VTMS *** the increasing BN content,Shore A hardness,breakdown strength and thermal conductivity of the silicone rubber(SR)composites increased despite the tensile strength slightly *** replacing all the ATH with BN,the SR composite showed a∼47%increase in breakdown strength,reaching 33.8 kV mm􀀀*** lower dielectric constant and dielectric loss were found for the SR composites with higher BN content,while the decreased dielectric loss and increased dielectric constant were achieved by the intro-duction of *** to the improved filler‐rubber interfacial interactions by adding VTMS,with the same BN content,all the SR/BN/ATH‐VTMS composites exhibited better property than the SR/BN/ATH *** best thermal conductivity of the SR composite reached 0.448 Wm􀀀1 K􀀀1,∼156%higher than that of the ATH filled SR composite.

关键词： composites rubber dielectric

Uncertainty-Aware Physical Simulation of Neural Radiance Fields for Fluids

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Computer Modeling in Engineering & Sciences 2024年第7期140卷 1143-1163页

作者： Haojie Lian jiaqi wang Leilei Chen Shengze Li Ruochen Cao Qingyuan Hu Peiyun Zhao Key Laboratory of In-Situ Property-Improving Mining of Ministry of Education Taiyuan University of TechnologyTaiyuan030024China Henan International Joint Laboratory of Structural Mechanics and Computational Simulation College of Architectural and Civil EngineeringHuanghuai UniversityZhumadian463000China National Innovation Institute of Defense Technology Academy of Military ScienceBeijing100091China School of Software Taiyuan University of TechnologyJinzhong030600China School of Science Jiangnan UniversityWuxi214122China

This paper presents a novel framework aimed at quantifying uncertainties associated with the 3D reconstruction of smoke *** approach reconstructs color and density fields from 2D images using Neural Radiance Field(NeRF)and improves image quality using frequency *** NeRF model is obtained via joint training ofmultiple artificial neural networks,whereby the expectation and standard deviation of density fields and RGB values can be evaluated for each *** addition,customized physics-informed neural network(PINN)with residual blocks and two-layer activation functions are utilized to input the density fields of the NeRF into Navier-Stokes equations and convection-diffusion equations to reconstruct the velocity *** velocity uncertainties are also evaluated through ensemble *** effectiveness of the proposed algorithm is demonstrated through numerical *** presentmethod is an important step towards downstream tasks such as reliability analysis and robust optimization in engineering design.

关键词： Uncertainty quantification neural radiance field physics-informed neural network frequency regularization twolayer activation function ensemble learning

Extracellular scaffold design for ultra-soft microtissue engineering

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Light(Advanced Manufacturing) 2021年第2期2卷 65-77页

作者： jiaqi wang Xiaowei Tang Zitian wang Jiawei Li Shaohua Ma Institute of Biopharmaceutical and Health Engineering(iBHE) Shenzhen International Graduate School(SIGS)Tsinghua UniversityShenzhen 518055China Tsinghua-Berkeley Shenzhen Institute(TBSI) Shenzhen 518055China

Soft and ultra-soft extracellular scaffolds constitute a major fraction of most human internal organs,except for the skeletal *** these organs in vitro requires a comprehensive understanding of their native scaffolding materials and proper engineering approaches to manufacture tissue architectures with microscale *** review focuses on the properties of soft and ultra-soft scaffolds,including their interactions with cells,mechanical properties(***),and existing microtissue engineering *** also summarises challenges presented by the conflict between the properties of the materials demanded by cell behaviours and the capacities of engineering *** proposes that leveraging the engineering ability of soft and ultra-soft scaffolds will promote therapeutic advances and regenerative medicine.

关键词： aging organs engineering

A highly efficient fluorescence-based switch-on detection method of 5-formyluracil in DNA

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Nano Research 2017年第7期10卷 2449-2458页

作者： Chaoxing Liu Yuqi Chen Yafen wang Fan Wu Xiong Zhang Wei Yang jiaqi wang Yi Chen Zhiyong He Guangrong Zou Shaoru wang Xiang Zhou College of Chemistry and Molecular Sciences Key Laboratory of Biomedical Polymers of Ministry of Education The Institute for Advanced Studies Hubei Province Key Laboratory of AIlergy and Immunology Wuhan University Wuhan 430072 China

The identification of hydroxylmethyl- and formylpyrimidines in genomic DNA was a landmark event in epigenetics. Numerous laboratories in related fields are investigating the biology of these and other nucleic acid modifications. However, limitations in the ability to detect and synthesize appropriate modifications are an impediment. Herein, we explored a remarkable development in the selective detection of 5-formyluracil in both single-stranded and double-stranded DNA under mild conditions. The ＂switch-on＂ specificity towards 5-formyluracil enabled a high signal-to-noise ratio in qualitatively and quantitatively detecting materials containing 5-formyluradl, which is not affected by the presence of abasic sites and 5-formylcytosine, the modified cytosine counterpart of 5-formyluracil. In summar~ the innoxiousness, convenience, and cost-effidency of the 5-formyluracil phosphoramidite synthetic routine would promote the understanding of the epi^enetic role of this natural thvmidine modification.

关键词： 5-Formyluracil fluorescence phosphoramidite epigenetics

Moisture‑Electric–Moisture‑Sensitive Heterostructure Triggered Proton Hopping for Quality‑Enhancing Moist‑Electric Generator

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Nano-Micro Letters 2024年第3期16卷 351-366页

作者： Ya’nan Yang jiaqi wang Zhe wang Changxiang Shao Yuyang Han Ying wang Xiaoting Liu Xiaotong Sun Liru wang Yuanyuan Li Qiang Guo Wenpeng Wu Nan Chen Liangti Qu Key Laboratory of Cluster Science Ministry of Education of ChinaKey Laboratory of Photoelectronic/Electrophotonic Conversion MaterialsSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081People’s Republic of China Yangtze Delta Region Academy of Beijing Institute of Technology Jiaxing 314019People’s Republic of China Department of Chemistry Key Laboratory of Organic Optoelectronics&Molecular EngineeringMinistry of EducationTsinghua UniversityBeijing 100084People’s Republic of China

Moisture-enabled electricity(ME)is a method of converting the potential energy of water in the external environment into electrical energy through the interaction of functional materials with water molecules and can be directly applied to energy harvesting and signal ***,ME can be unreliable in numerous applications due to its sluggish response to moisture,thus sacrificing the value of fast energy harvesting and highly accurate information ***,by constructing a moisture-electric-moisture-sensitive(ME-MS)heterostructure,we develop an efficient ME generator with ultra-fast electric response to moisture achieved by triggering Grotthuss protons hopping in the sensitized ZnO,which modulates the heterostructure built-in interfacial potential,enables quick response(0.435 s),an unprecedented ultra-fast response rate of 972.4 mV s^(−1),and a durable electrical signal output for 8 h without any *** research provides an efficient way to generate electricity and important insight for a deeper understanding of the mechanisms of moisture-generated carrier migration in ME generator,which has a more comprehensive working scene and can serve as a typical model for human health monitoring and smart medical electronics design.

关键词： Moist-electric generators Grotthuss proton hopping Fast response Durable electrical output Personal health monitoring

Kinetic and thermodynamic synergy of organic small molecular additives enables constructed stable zinc anode

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Journal of Energy Chemistry 2023年第9期84卷 62-72页

作者： Yang Gao Mingshan wang Hao wang Xinpeng Li Yuanwei Chu Zhicheng Tang Yuanlong Feng jiaqi wang Yong Pan Zhiyuan Ma Zhenliang Yang Dan Zhou Xing Li School of New Energy and Materials Energy Storage Research InstituteSouthwest Petroleum UniversityChengdu 610500SichuanChina Institute of Materials China Academy of Engineering PhysicsMianyang 621907SichuanChina Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and TechnologyBeijing 100083China

An organic small molecule additive zinc formate is introduced to construct stable Zn metal interphase by electrochemical kinetic control and thermodynamic *** partially forms a water-formate concomitant dipole layer at the internal Helmholtz electrical double layers(HEDLs) under the preferential adsorption function of formate on Zn surface,reducing the occurrence of side reactions at phase ***,free formate in HEDLs regulates the Zn^(2+) solvation sheath structure to accelerate the desolvation,transference,and deposition kinetics of Zn^(2+).Besides,the hydrolysis reaction of zinc formate increases the hydrogen evolution overpotential,inhibiting the thermodynamic tendency of hydrogen ***,it presents stable cycle for more than 2400 h at 5 mA cm^(-2),as well as an average Coulombic efficiency of 99.8% at 1 A g^(-1) after 800 cycles in the Zn‖VO_(2) full *** interphase engineering strategy zinc anode by organic small molecular brings new possibility towards high-performance aqueous zinc-ion batteries.

关键词： Zn anode Organic small molecule Aqueous zinc-ion battery Zinc formate

An elevated preoperative serum calcium level is a significant predictor for positive peritoneal cytology in endometrial carcinoma

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Chinese Journal of Cancer Research 2019年第6期31卷 965-973页

作者： Xingchen Li Yuan Cheng Yangyang Dong Boqiang Shen Xiao Yang jiaqi wang Jingyi Zhou Jianliu wang Department of Obstetrics and Gynecology Peking University People's HospitalBeijing 100044China Beijing Key Laboratory of Female Pelvic Floor Disorders Diseases Beijing 100044China

Objective:To evaluate preoperative serum calcium concentration and investigate the association between calcium level and positive peritoneal cytology in endometrial carcinoma(EC).Methods:A total of 510 patients who were diagnosed with EC and had surgery were initially enrolled in this study at Peking University People's Hospital between January 2012 and December *** characteristics and preoperative serum calcium,albumin,carbohydrate antigen(CA)125,CA19-9,carcinoembryonic antigen(CEA)were extracted from patient records and evaluated according to postoperative peritoneal *** factors were assessed with Cox univariate and multivariate *** selected from multivariate analysis results were used to build a predictive ***:A total of 510 patients are identified in our database and 444 patients who fulfilled inclusion and exclusion criteria are included in this *** analysis revealed that ionized calcium concentration was closely related to positive peritoneal cytology,tumor grade and lymph-vascular space invasion(LVSI).Moreover,peritoneal cytology was significantly associated with hypertension,tubal ligation,serum CA125,CA19-9,CEA and ionized calcium *** analysis revealed that albumin-adjusted calcium level,CA125 and tubal ligation were independent predictive factors of positive peritoneal cytology(P<0.05).A combination of ionized calcium level with the other two indexes yielded significantly great area under the curve(AUC=0.824).Conclusions:This study enhanced the value of preoperative ionized calcium *** also identified several potential biomarkers to predict positive peritoneal cytology in EC patients before surgery.

关键词： Endometrial carcinoma serum calcium peritoneal cytology logistic regression predictive model