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Alternating Terpolymers Based on Tunable Bi-donors with Manipulating Energy Levels and Molecular Geometry

Chemical Research in Chinese Universities 2017年第2期33卷 305-311页

作者： CHEN Zhenzhu YANG Jia wu feiyan CHEN Lie CHEN Yiwang College of Chemistry Institute of Polymers Nanchang University Nanchang 330031 P. R. China Jiangxi Provincial Key Laboratory of New Energy Chemistry Nanchang University Nanchang 330031 P. R. China

Three novel regular acceptor-donorl-acceptor-donor2（A-D1-A-D2） terpolymers were prepared via em-bedding a second donor（D2） unit into the traditional D-A backbone to manipulate the energy levels and moleculargeometry with no complex synthesis or solubility loss. In these A-D1-A-D2 terpolymers, benzodithiophene（BDT, D1）and diketopyrrolopyrrole（DPP, A） were selected as the basic skeleton, and the dithienopyrrole（DTPy）, carbazole（CZ）and fluorine（FL） units with different electron donating ability were chosen as the second donor trait（D2）. The HOMOenergy levels can be effectively modulated by only varying D2 unit because of the push-pull interaction between do-nor and acceptor units. Versus the D-A bipolymer PDPP-BDT, incorporation of the D2 unit into the copolymers candistinctly lower the highest occupied molecular orbital（HOMO） levels to -5.47 eV for PDDPP-BDT-DTPy, -5.38 eVfor PDDPP-BDT-CZ and -5.23 eV for PDDPP-BDT-FL, which shows the strong dependence on electron-donatingability. Density functional theory（DFT） simulation and X-ray diffraction（XRD） measurements also reveal the effectof the D2 units on the molecular geometry of the terpolymers and their molecular packing. Notably, aPDDPP-BDT-DTPy combined with a thiophene ring and forked tail pendant away from the backbone had less back-bone torsion and more compact packing than the other two counterparts. These results demonstrate that embedding asecond donor（D2） unit into the backbone to construct an A-D1-A-D2 structure can be an effective and direct strategyto manipulate the energy levels and molecular geometry and develop organic semiconducting materials.

关键词： Terpolymer Electron-donating Energy level Molecular geometry

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Novel polymer acceptors achieving 10.18% efficiency for all-polymer solar cells

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Journal of Energy Chemistry 2021年第2期30卷 63-68,I0003页

作者： Shaorong Huang feiyan wu Zuoji Liu Yongjie Cui Lie Chena Yiwang Chen College of Chemistry/Institute of Polymers and Energy Chemistry(IPEC) Nanchang University.Nanchang 330031JiangxiChina Institute of Advance Scientific Research(iASR) Jiangxi Normal University99 Ziyang AvenueNanchang 330022JiangxiChina State Key Laboratory for Modification of Chemical Fibers and Polymer Materials&College of Materials Science and Engineering Donghua UniversityShanghai 201620China

Polymer acceptors based on extended fused ring p skeleton has been proven to be promising candidates for all-polymer solar cells(all-PSCs), due to their remarkable improved light absorption than the traditional imide-based polymer acceptors. To expand structural diversity of the polymer acceptors, herein,two polymer acceptors PSF-IDIC and PSi-IDIC with extended fused ring p skeleton are developed by copolymerization of 2,20-((2 Z,20 Z)-((4,4,9,9-tetrahexadecyl-4,9-dihydro-s-indaceno [1,2-b:5,6-b']dithio phene-2,7-diyl)bis(methanylylidene))bis(3-oxo-2,3-dihydro-1 H-indene-2,1-diylidene))dimalononitrile(IDIC-C16) block with sulfur(S) and fluorine(F) functionalized benzodithiophene(BDT) unit and silicon(Si) atom functionalized BDT unit, respectively. Both polymer acceptors exhibit strong light *** PSF-IDIC exhibits similar energy levels and slightly higher absorption coefficient relative to the PSi-IDIC. After blended with the donor polymer PM6, the functional atoms on the polymer acceptors show quite different effect on the device performance. Both of the acceptors deliver a notably high open circuit voltage(V_(OC)) of the devices, but PSi-IDIC achieves higher V OCthan PSF-IDIC. All-PSC based on PM6:PSi-IDIC attains a power conversion efficiency(PCE) of 8.29%, while PM6:PSF-IDIC-based device achieves a much higher PCE of 10.18%, which is one of the highest values for the all-PSCs reported so far. The superior device performance of PM6:PSF-IDIC is attributed to its higher exciton dissociation and charge transport, decreased charge recombination, and optimized morphology than PM6:PSi-IDIC counterpart. These results suggest that optimizing the functional atoms of the side chain provide an effective strategy to develop high performance polymer acceptors for all-PSCs.

关键词： All-polymer solar cells Polymer acceptor Functional atoms Power conversion efficiency

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Printable and stable all-polymer solar cells based on non-conjugated polymer acceptors with excellent mechanical robustness

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Science China Chemistry 2022年第1期65卷 182-189页

作者： Dong Chen Siqi Liu Xiaotian Hu feiyan wu Jiabin Liu Kangkang Zhou Long Ye Lie Chen Yiwang Chen College of Chemistry/Institute of Polymers and Energy Chemistry(IPEC) Nanchang UniversityNanchang 330031China Institute of Advanced Scientific Research(iASR) Key Laboratory of Functional Organic Small Molecules for Ministry of EducationJiangxi Normal UniversityNanchang 330022China Tianjin Key Laboratory of Molecular Optoelectronic Science Tianjin UniversityCollaborative Innovation Center of Chemical Science and Engineering(Tianjin)Tianjin 300072China

All-polymer solar cells(all-PSCs)trigger enormous commercial applications,and great progress has been made in recent ***,from small-area devices to large-area modules,the poor adaption of the materials for printing methods and the large efficiency loss are still great ***,three novel non-conjugated polymer acceptors(PTH-Y,PTClm-Yand PTClo-Y)are developed for *** can be found that non-conjugated polymer acceptors can effectively minimize the technique and efficiency gaps between small-area spin-coating and large-area blade-printing method,which can facilitate the preparation of large-area flexible *** directly inheriting the spin-coating condition,the blade-coating processed device based on PTCloY achieves an impressive power conversion efficiency(PCE)of 12.42%,comparable to the spin-coating processed one(12.74%).Such a non-conjugated polymer system also can well tolerate large-scale preparation and flexible *** PCE of 11.94%for large-area rigid device and 11.56%for large-area flexible device are obtained,which is the highest value for large-area flexible all-PSCs fabricated by *** addition,the non-conjugated PTClo-Y-based devices show excellent thermal stability and mechanical *** results demonstrate that the non-conjugated polymer acceptors are potential candidates for the fabrication of highly-efficient,large-area and robust flexible all-PSCs by printing methods.

关键词： all-polymer solar cells non-conjugated polymer acceptor lager-area device printing mechanical robustness

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Non-conjugated terpolymer acceptors for highly efficient and stable lager-area all-polymer solar cells

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Journal of Energy Chemistry 2022年第8期31卷 631-638,I0017页

作者： Jiabin Liu Jinliang Liu Jiawei Deng Bin Huang Jiyeon Oh Lin Zhao Liang Liu Changduk Yang Dong Chen feiyan wu Lie Chen College of Chemistry and Chemical Engineering/Institute of Polymers and Energy Chemistry(IPEC) Nanchang UniversityNanchang 330031JiangxiChina Institute of Advanced Scientific Research(iASR)/Key Laboratory of Functional Organic Small Molecules for Ministry of Education Jiangxi Normal UniversityNanchang 330022JiangxiChina Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and Technology 156 Ke Jia AvenueGanzhou 341000JiangxiChina Department of Energy Engineering School of Energy and Chemical EngineeringPerovtronics Research CenterLow Dimensional Carbon Materials CenterUlsan National Institute of Science and Technology(UNIST)50 UNIST-gilUlju-gunUlsan 44919South Korea

All-polymer solar cells(all-PSCs)have made significant progress recently,but few studies have been conducted to investigate the lab-to-manufacturing translation from the spin-coating method to the printing ***,the random copolymerization method and non-conjugated backbone approach are integrated to manipulate the morphology and photoelectric properties of the active layer for large-area printed all-PSCs.A series of non-conjugated terpolymer acceptors PYSe-TC_(6)T(x)(x=5,10,and 20,refers to the molar ratio of TC_(6)T unit)are developed by covalently introducing non-conjugated unit TC_(6)T into the PYSe host bipolymer by random *** spin-coated PYSe-TC_(6)T(10)-based all-PSC demonstrates the best power conversion efficiency(PCE)of 13.54%,superior to the PYSe-based one(12.45%).More intriguingly,morphological studies reveal that a combination of the random polymerization and non-conjugated backbone strategy can effectively prevent the active layer from overaggregation and improve the film quality during the printing process,thereby minimizing the efficiency and technology gap between spin-coated small-area devices and blade-coated large-area *** directly using the same preparation condition of spin-coating,the blade-coated small-area(0.04 cm^(2))delivers a PCE of 12.83%and the large-area(1.21 cm^(2))device achieves a PCE of 11.96%with a small PCE *** PCE value and PCE loss are one of the most outstanding performances of the bladecoated *** findings reveal that a combination of the non-conjugated flexible backbone with random copolymerization to develop non-conjugated terpolymers is an attractive design concept to smoothly realize the lab-to-manufacturing translation.

关键词： All-polymer Non-conjugated Large area Blade-coating Lab-to-manufacturing translation

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Recent progress of hybrid cathode interface layer for organic solar cells

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Journal of Energy Chemistry 2024年第4期91卷 383-406页

作者： Jianru Wang Dan Zhou Zhentian Xu Yujie Pu Senmei Lan Fang Wang feiyan wu Bin Hu Yongfen Tong Ruizhi Lv Honglin Chu Lie Chen Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources RecycleNanchang Hangkong UniversityNanchang 330063JiangxiChina College of Chemistry and Chemical Engineering/Institute of Polymers and Energy Chemistry(IPEC) Nanchang UniversityNanchang 330031JiangxiChina

Organic solar cells(OSCs)have gained conspicuous progress during the past few decades due to the development of materials and upgrading of the device *** power conversion efficiency(PCE)of the single-junction device had surpassed 19%.The cathode interface layer(CIL),by optimizing the connection between the active layer and the cathode electrode,has become a momentous part to strengthen the performances of the ***,CIL is also indispensable to illustrating the working mechanism of OSCs and enhancing the stability of the *** this essay,hybrid CILs in OSCs have been ***,the advancement and operating mechanism of OSCs,and the effects and relevant design rules of CIL are briefly concluded;secondly,the significant influence of CIL on enhancing the stability and PCE of OSCs is presented;thirdly,the characteristics of organic hybrid CIL and organic-inorganic hybrid CIL are ***,the conclusion and outlook of CIL are summarized.

关键词： Organic solar cells Theoperation mechanism Organic hybrid cathode interface layer Organic-inorganic hybrid CIL

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Effects of dietary oligopeptide(iron chelate) on pregnant rats with iron deficiency anemia and offspring development

Effects of dietary oligopeptide(iron chelate) on pregnant ra...

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中国营养学会第十五届全国营养科学大会

作者： Wenfei Pan He Gao Xiaoling Ying Jili Chen feiyan wu Sasa Xie Min Yang Department of Nutrition and food hygiene School of Public Health and Center of Clinical Big Data and Analytics of The Second Affiliated Hospital Zhejiang University School of Medicine Linping Campus The Second Affiliated Hospital of Zhejiang University School of Medicine

Iron deficiency anemia(IDA) is a serious publichealth problem worldwide, and traditional iron supplements such as ferroussulfate have many adverse effects. This study was to systematically evaluatethe effects of dietary oligopeptide(iron chelate) supplementation on IDApregnant rats and offspring, and to provide a basis for the development of new dietaryoligopeptide(iron chelate) supplements. Methods The IDA model was established using SPF Sprague Dawley(SD) female rats fed with low iron diet and divided into seven groups(6-9 rats per group) according to hemoglobin(Hb) and body weight: IDA model group atiron dose of 4 ppm(ID), high dose of ferrous sulfate group at iron dose of 400 ppm(H-FeSO4),low dose of ferrous sulfate group at iron dose of 40 ppm(L-FeSO4),marine fish oligopeptide chelated iron group at iron dose of 400 ppm(MCOP-Fe),marine fish oligopeptide group at iron dose of 40 ppm(MOP), whey proteinoligopeptide chelated iron group at iron dose of 400 ppm(WPPFe) and wheyprotein oligopeptide group at iron dose of 40 ppm(WPOP). Rats in each groupwere fed with the corresponding special diet during pregnancy until the day ofdelivery. Hemoglobin(Hb), ironmetabolism, liver oxidative stress, tumor necrosis factor α(TNF-α) and development of offspring were investigated. Results 1) After iron supplementation, the Hb of IDA pregnant rats in all interventiongroups was higher than that of the ID group(all P<0.05), and the MCOP-Fe and WPP-Fe groups had more advantageousability to restoring Hb. 2) Among the ironmetabolism-related indexes, serum iron(Fe), serum ferritin(Fer), total ironbinding capacity(TiBC) and liver tissue iron content were significantly higherin the WPP-Fe group than the ID group(P<0.05). 3) The liver malondialdehyde(MDA) content inthe MCOP-Fe and WPP-Fe group was significantly higher than the ID group(P<0.05), while the superoxidedismutase(SOD) content in the WPP-Fe and WPOP group showed a tendency to besuperior to other groups. 4) TNF-αconcentration was

关键词： Iron deficiency anemia Pregnant rats Dietary oligopeptide(iron chelate)

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基于共价自适应网络的液晶弹性体:从分子设计到应用

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Science China Materials 2023年第8期66卷 3004-3021页

作者：祝阳阳徐镇田吴飞燕王猛谌烈 College of Chemistry and Engineering/Institute of Polymers and Energy Chemistry(IPEC) Nanchang UniversityNanchang 330031China Institute of Advanced Materials School of Chemistry and Chemical EngineeringSoutheast UniversityNanjing 211189China

液晶弹性体(LCEs)是一种刺激响应性材料,具有较大且可逆变形的能力,在软致动器、人造肌肉、光子器件和生物医学工程等领域引起了广泛的关注.与具有永久交联网络的传统液晶弹性体不同,具有共价自适应网络的液晶弹性体(CAN-LCEs)可以通过... 详细信息

液晶弹性体(LCEs)是一种刺激响应性材料,具有较大且可逆变形的能力,在软致动器、人造肌肉、光子器件和生物医学工程等领域引起了广泛的关注.与具有永久交联网络的传统液晶弹性体不同,具有共价自适应网络的液晶弹性体(CAN-LCEs)可以通过键交换反应引起的网络重排将多畴液晶弹性体编程为单畴液晶弹性体.此外,CAN-LCEs还具有焊接、自修复、回收、再加工或重新编程的能力.本文综述了CAN-LCEs的最新研究成果,详细讨论了基于各种类型的键交换反应的CAN-LCEs及其设计策略.同时,本文还介绍了共价自适应网络给LCEs带来的新功能,包括焊接、自愈、重塑、回收、重新编程等,并探讨了CAN-LCEs在各种领域的应用前景.最后,本文总结了这一新兴研究领域面临的挑战和潜在的未来发展方向.

关键词：刺激响应性液晶弹性体自适应网络生物医学工程交换反应交联网络光子器件 CAN

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数据驱动的协作学习脚手架模型构建与应用

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教育研究与实验 2023年第4期 128-136页

作者：吴军其吴飞燕张萌萌华中师范大学人工智能教育学部教师教育学院武汉430079 华中师范大学人工智能教育学部武汉430079

数据驱动教学决策成为大数据时代教学改革的新范式。数据驱动的协作学习脚手架模型,以“最近发展区”为理论基础,以智慧教育环境为技术支撑,以协作学习过程产生的多模态数据为循证依据,在课堂协作环节开展精准评价和科学决策。单因素组... 详细信息

数据驱动教学决策成为大数据时代教学改革的新范式。数据驱动的协作学习脚手架模型,以“最近发展区”为理论基础,以智慧教育环境为技术支撑,以协作学习过程产生的多模态数据为循证依据,在课堂协作环节开展精准评价和科学决策。单因素组间对比实验结果表明:数据驱动的协作学习脚手架教学有助于提升学生协作学习投入度,提高协作学习效率,优化课堂教学质量。数据驱动的脚手架教学是动态生成性的教学,需要多方力量广泛参与。

关键词：数据驱动协作学习脚手架智慧课堂

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一种激光传感图像中心子像素定位方法

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激光杂志 2019年第9期40卷 90-93页

作者：吴飞燕廖显文梧州学院广西高校行业软件技术重点实验室广西梧州543002 桂林电子科技大学计算机与信息安全学院广西桂林541004

为了提高激光传感图像的高分辨识别能力,需要进行中心子像素的定位处理,提出基于梯度均值融合的激光传感图像中心子像素定位。对采集的激光传感图像采用超像素纹理分割方法进行信息融合,提取激光传感图像的边缘轮廓特征量,采用空间区域... 详细信息

为了提高激光传感图像的高分辨识别能力,需要进行中心子像素的定位处理,提出基于梯度均值融合的激光传感图像中心子像素定位。对采集的激光传感图像采用超像素纹理分割方法进行信息融合,提取激光传感图像的边缘轮廓特征量,采用空间区域的分块降噪方法进行图像增强处理,确定激光传感图像的中心像素点,对图像进行分块融合匹配,提取激光传感图像的子块直方图信息,采用梯度均值融合方法进行激光传感图像的信息融合,实现对激光传感图像的中心子像素的定位处理。仿真结果表明,采用该方法进行激光传感图像中心子像素定位的精度较高,可以得到较高的峰值信噪比。

关键词：激光传感图像中心子像素定位图像增强

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数据驱动课堂精准施教关键指标体系构建及应用

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现代远距离教育 2023年第2期 39-52页

作者：吴军其任飞翔吴飞燕华中师范大学湖北武汉430079

随着人工智能、物联网和可穿戴技术的发展,多模态数据驱动的课堂精准施教成为新时代教育研究的发展趋势。精准施教的前提是对数据进行规范化处理,对指标进行标准化探索。利用元人种志分析法,整合原始文献归纳出包括41个一级指标、214个... 详细信息

随着人工智能、物联网和可穿戴技术的发展,多模态数据驱动的课堂精准施教成为新时代教育研究的发展趋势。精准施教的前提是对数据进行规范化处理,对指标进行标准化探索。利用元人种志分析法,整合原始文献归纳出包括41个一级指标、214个二级指标的数据驱动课堂教学初步指标体系;通过两轮专家咨询对指标进行修正,形成由行为数据、生理数据、心理数据、平台数据、环境数据、评价数据、基础数据共七种数据类别,55个一级指标、254个二级指标构成的数据驱动课堂精准施教关键指标框架;在真实课堂环境中应用指标,结果显示:实验班在教师课堂讲授效率与操作实验效果、学生测验成绩、注意力保持时长、课堂发言和笔记质量等方面表现显著优于对照班。基于此提出数据驱动课堂精准施教应结合实际合理选择数据,精细掌控教学过程;将数据分析可视化,精确定位教学问题;利用多模态数据支撑,精准开展教学评价的实施建议。

关键词：多模态数据课堂教学数据精准教学元人种志

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