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Enhancing Photovoltaic Performance of Nonfused-Ring Electron Acceptors via Asymmetric End-Group Engineering and Noncovalently Conformational Locks

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Chinese Journal of Chemistry 2024年第5期42卷 485-490页

作者： Bo Liu Congqi Li Xiaobin Gu Yinghui Han Zhixiang Wei Yunhao Cai Xin Zhang Hui Huang yanping huo School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhouGuangdong510006 China College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physics University of Chinese Academy of SciencesBeijing100049 China College Resources and Environment University of Chinese Academy of SciencesBeijing100049 China Center for Excellence in Nanoscience (CAS) & Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS) National Center for Nanoscience and TechnologyBeijing100190 China

By employing the asymmetric end-group engineering,an asymmetric nonfused-ring electron acceptor(NFREA)was designed and *** with the symmetric analogs(NoCA-17 and NoCA-18),NoCA-19 possesses broader light absorption range,more coplanarπ-conjugated backbone,and appropriate crystallinity according to the experimental and theoretical *** organic solar cells based on J52:NoCA-19 exhibited a power conversion efficiency as high as 12.26%,which is much higher than those of J52:NoCA-17(9.50%)and J52:NoCA-18(11.77%),mainly due to more efficient exciton dissociation,better and balanced charge mobility,suppressed recombination loss,shorter charge extraction time,longer charge carrier lifetimes,and more favorable blend film *** findings demonstrate the great potential of asymmetric end-group engineering in exploring low-cost and high-performance NFREAs.

关键词： Organic solar cells Nonfused-ring electron acceptors Asymmetric end-group engineering Noncovalently conformational locks Low-cost acceptors

Promising interlayer sensitization strategy for the construction of high-performance blue hyperfluorescence OLEDs

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Light(Science & Applications) 2024年第7期13卷 1372-1382页

作者： Jianghui Wang Peng Zou Letian Chen Zhentao Bai Hao Liu Wen-Cheng Chen yanping huo Ben Zhong Tang Zujin Zhao State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Luminescence from Molecular AggregatesSouth China University of TechnologyGuangzhou 510640China. School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China. School of Science and Engineering Shenzhen Institute of Aggregate Science and TechnologyThe Chinese University of Hong KongShenzhenGuangdong 518172China

Multi-resonance thermally activated delayed fluorescence(MR-TADF)materials are promising candidates for organic light-emitting diodes(OLEDs)with narrow electroluminescence(EL)*** researches focus on fabricating hyperfluorescence OLEDs to improve EL efficiencies of MR-TADF emitters by co-doping them with TADF sensitizers in a single host ***,in many cases,the polarity of the single host could be not suitable for both blue MRTADF emitters and blue TADF sensitizers,resulting in broadened EL spectra in high-polar hosts or decreased EL efficiencies in low-polar ***,we wish to report an efficient sensitization strategy for blue MR-TADF emitters by constructing an interlayer-sensitizing configuration,in which the blue TADF sensitizers and blue MR-TADF emitters are separated into two closely aligned host layers with high polarity and low polarity,*** on this strategy,efficient blue hyperfluorescence OLEDs are realized and verified by employing various TADF sensitizers and different MR-TADF emitters,furnishing outstanding external quantum efficiencies of up to 38.8%and narrow EL *** results validate the feasibility and universality of this interlayer sensitization strategy,which provides an effective alternative to high-performance blue hyperfluorescence OLEDs.

关键词： OLEDs interlayer sensitization

三重基序蛋白28对乳腺癌细胞增殖能力和肿瘤免疫微环境的影响

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新乡医学院学报 2024年第4期41卷 301-308页

作者：付琳琳马保东张书娟霍彦平郑州大学附属郑州中心医院乳腺外科河南郑州450001 郑州大学附属郑州中心医院干细胞再生医学转化中心河南郑州450001 郑州大学附属郑州中心医院检验科河南郑州450001

目的探讨三重基序蛋白28(TRIM28)对乳腺癌细胞增殖和集落形成能力的影响及其与肿瘤浸润免疫细胞之间的关系。方法选择2020年9月至2022年1月在郑州大学附属郑州中心医院进行诊治的39例乳腺癌患者的石蜡包埋肿瘤组织标本及配对的癌旁邻近... 详细信息

目的探讨三重基序蛋白28(TRIM28)对乳腺癌细胞增殖和集落形成能力的影响及其与肿瘤浸润免疫细胞之间的关系。方法选择2020年9月至2022年1月在郑州大学附属郑州中心医院进行诊治的39例乳腺癌患者的石蜡包埋肿瘤组织标本及配对的癌旁邻近组织,采用免疫组织化学染色法检测乳腺癌组织及癌旁组织中TRIM28蛋白的表达;将对数生长期MCF7细胞随机分为si-control组和si-TRIM28组,si-control组细胞转染空载质粒,si-TRIM28组细胞转染敲低TRIM28的质粒;采用Western blot法检测2组MCF7细胞中TRIM28蛋白表达水平,细胞计数盒-8实验检测2组细胞增殖能力,平板克隆形成实验检测2组细胞的集落形成能力;CIBERSORT算法分析美国癌症肿瘤基因图谱(TCGA)数据库中乳腺癌组织中肿瘤浸润免疫细胞的差异及其与TRIM28蛋白的相关性;基因组富集分析(GSEA)软件分析TRIM28基因表达水平差异之间的信号通路;TISIDB数据库获取TRIM28基因相关的免疫调节因子,对其进行京都基因和基因组百科全书(KEGG)通路富集分析。结果乳腺癌组织中TRIM28蛋白阳性染色定位于细胞质中,呈棕黄色细颗粒状。TRIM28蛋白在癌旁组织中呈阴性或弱阳性表达,而在乳腺癌组织中呈强阳性表达;肿瘤组织中TRIM28蛋白表达水平显著高于癌旁组织(t=2.258,P0.05)。培养第4天,si-TRIM28组MCF7细胞的存活率显著低于si-control组(t=13.920,P<0.05)。si-TRIM28组MCF7细胞克隆形成数量显著少于si-control组(t=11.528,P<0.05)。乳腺癌组织和癌旁组织中巨噬细胞亚群、B细胞亚群、T细胞亚群、活化的自然杀伤细胞、单核细胞和嗜酸性粒细胞计数比较差异均有统计学意义(P<0.05);乳腺癌组织中TRIM28蛋白表达水平与浸润的单核细胞和调节性T细胞呈正相关(r=0.150、0.100,P<0.05),与活化的树突状细胞、活化的记忆CD4 T细胞、静息的记忆CD4 T细胞、γδT细胞呈负相关(r=-0.100、-0.160、-0.099、-0.190,P<0.05);GSEA分析结果表明,TRIM28基因参与了多种免疫/癌症相关的信号通路,包括癌症通路、T细胞受体信号通路、Notch信号通路和Wnt信号通路。从TISIDB数据库中获取了TRIM28基因相关的58个免疫调节因子;对这58个免疫调节因子进行KEGG信号通路富集分析结果显示,免疫调节因子CSF1R、CXCL12、CD27、CD40和CD40LG共同参与了T细胞受体信号通路、自然杀伤细胞介导的细胞毒性、核因子-κB信号通路等信号通路。结论TRIM28蛋白在乳腺癌中高度表达,敲低TRIM28基因可抑制乳腺癌细胞的增殖能力和集落形成能力,TRIM28蛋白可能通过多种免疫/癌症相关信号通路参与调节乳腺癌免疫微环境。

关键词：乳腺癌三重基序蛋白28 免疫微环境生物信息学

刚玉型Al_(2)O_(3)与片状BN复合填充聚苯硫醚制备高导热复合材料

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合成树脂及塑料 2024年第3期41卷 15-20页

作者：王晓芳陆嘉晟籍少敏霍延平赵经纬广东工业大学轻工化工学院广东广州510000 广州天赐高新材料股份有限公司广东广州510006

以聚苯硫醚(PPS)为基体,刚玉型Al_(2)O_(3)与少量片状BN为复合导热填料,采用低温高压的模压工艺制备了Al_(2)O_(3)/PPS/BN高导热复合材料。研究了填料粒径及含量、PPS含量对复合材料导热性能和力学性能的影响,并确定了一种高导热Al_(2)O... 详细信息

以聚苯硫醚(PPS)为基体,刚玉型Al_(2)O_(3)与少量片状BN为复合导热填料,采用低温高压的模压工艺制备了Al_(2)O_(3)/PPS/BN高导热复合材料。研究了填料粒径及含量、PPS含量对复合材料导热性能和力学性能的影响,并确定了一种高导热Al_(2)O_(3)复合材料的制备工艺。采用扫描电子显微镜、导热测量仪、万能试验机等研究了试样的形貌、导热率及力学性能。结果表明:w(Al_(2)O_(3))为89%,w(BN)为3%,w(PPS)为8%时,复合材料的导热率达5.44 W/(m·K),最高导热率是环氧树脂的21.76倍,且具有优异的力学性能。

关键词：聚苯硫醚氮化硼氧化铝复合材料导热性能

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基于信息量-机器学习耦合模型的水电梯级开发流域滑坡易发性评价

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测绘通报 2024年第S1期 237-241页

作者：李正冷亮孙永鑫霍燕平何延博吉林大学地球探测科学与技术学院吉林长春130000

随着滑坡灾害形势的日益严峻,滑坡易发性评价的重要性愈发凸显。尽管统计方法与机器学习模型耦合已被广泛应用,但尚未开展水电梯级开发流域的评价工作。水电梯级开发流域内部的大坝和水库不仅改变了水流和水位,还深刻影响了地下水位,增... 详细信息

随着滑坡灾害形势的日益严峻,滑坡易发性评价的重要性愈发凸显。尽管统计方法与机器学习模型耦合已被广泛应用,但尚未开展水电梯级开发流域的评价工作。水电梯级开发流域内部的大坝和水库不仅改变了水流和水位,还深刻影响了地下水位,增加了库岸的滑坡风险。本文以清江水电梯级开发流域为研究区,针对水电梯级开发流域的独特环境,考虑了水流强度指数(SPI)、地形湿度指数(TWI)和地下富水性3个因子,结合前人经验共选取18个影响因子,通过历史数据进行贡献率分析,剔除了3个低贡献因子,优化了整体评估体系。结合信息量法和机器学习,本文构建了4种模型,其中IV-ANN模型表现最为出色,准确率高达82.41%。本文模型充分考虑了水电梯级开发流域孕灾条件,为水电梯级开发流域的科学研究和灾害防治工作提供了有益参考。

关键词：易发性评价机器学习信息量模型

Anhydride type film-forming electrolyte additives for high-temperature LiNi0.6Co0.2Mn0.2O2//graphite pouch cells

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Progress in Natural Science:Materials International 2023年第3期33卷 320-327页

作者： Anwei Zhang Chengyun Wang Weizhen Fan Jingwei Zhao yanping huo Xijun Xu GAC Automotive Research &Development Center Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and Engineering South China University of Technology Research and Development Center Guangzhou Tinci Materials Technology Co. Ltd. College of Chemical Engineering and Light Industry Guangdong University of Technology

LiNi0.6Co0.2Mn0.2O2//graphite full cell, due to its high energy density as the most promising candidate for power batteries received increased attention, but the severe capacity loss under high-temperature conditions prevents their large-scale application. Here, glutaric anhydride(GA) and succinic anhydride(SA) as electrolyte additives are investigated to overcome the high-temperature problem of LiNi0.6Co0.2Mn0.2O2//graphite cells. Due to the unique film-forming features and high-temperature stability, the cells containing 0.5% GA and 0.5% SA can retain capacity retention of 91.2% and 92.4% stored at 60°C for 15 days, corresponding to a negligible capacity loss of 4.6 and 0.8 m Ah g-1after 200 cycles, respectively. In addition, the lifespans of cells under 25°C are also significantly extended by introducing GA and SA into the electrolytes. Electrochemical and spectroscopic techniques results indicate the full cell capacity loss is predominantly caused by the unstable anode solid electrolyte interphase(SEI) layer and a stable SEI film derived from GA and SA is formed on the graphite electrode *** SEI film can effectively inhibit the consumption of electrolytes and enhance the high-temperature performance of cells. This work paves a way for moderating high energy density cells’ work under high-temperature operation by developing special anodic film-forming electrolyte additives.

关键词： Anhydride-based Electrolyte additives Film-forming LiNi_(0.6)Co_(0.2)Mn_(0.2)O_2//graphite High-temperature performance

A highly active and selective chalcogen bond-mediated perchlorate channel

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Chinese Chemical Letters 2022年第4期33卷 2026-2030页

作者： Lin Yuan Peng Jiang Jingliang Hu Huan Zeng yanping huo Zhongyan Li Huaqiang Zeng College of Chemistry and Bioengineering Hunan University of Science and EngineeringYongzhou 425199China Faculty of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China Frontier Research Center for Multidisciplinary Sciences School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China

Artificial membrane transporters that either use chalcogen bonds to facilitate transmembrane flux of anions or show high selectivity toward perchlorate anions are *** this work,we report on one such novel monopeptide-based transporter system,featuring both chalcogen bonds for highly efficient anion transport and high transport selectivity toward ClO_(4)^(-) ***,these monopeptide molecules associate with each other via H-bonds to produce H-bonded 1D stack that not only one dimensionally but also directionally aligns the terminal bicyclic thiophene motifs to the same ***,these well-aligned thiophenes create a sulfur-rich transmembrane pathway,combinatorially fine-tunable to enable anions to efficiently cross the membrane in the increasing activity of Cl^(-)

关键词： Synthetic anion channel Chalcogen bonds Monopeptide Thiophene Perchlorate

Heavy atom-free triplet photosensitizer based on thermally activated delayed fluorescence material for NIR-to-blue triplet-triplet annihilation upconversion

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中国化学快报：英文版 2023年第2期34卷 403-406页

作者： Hui Liang Xiaoyu Liu Liting Tang Zafar Mahmood Zeduan Chen Guowei Chen Shaomin Ji yanping huo School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China

Triplet-triplet annihilation(TTA) upconversion-based materials have potential application in the broad range of research areas, including photocatalysis and life sciences. However, near-infrared(NIR)-to-blue upconverted emission is preferred for most of the practical applications, but developing a NIR-to-blue TTA upconversion system is a challenging task in photochemistry. In this work, a thermally activated delayed fluorescence(TADF) material with intense visible-to-NIR absorption is demonstrated that shows a longer triplet state lifetime(32 μs) and high triplet state energy(E_(T)= 1.55 e V). For the first time, a heavy atomfree NIR(λ_(ex)> 650 nm) to blue(λ_(em)< 460 nm) TTA upconversion system was devised, employing the dimeric borondifluoride curcuminoid TADF material as triplet photosensitizer(PS) and a large anti-Stokes shift(0.88 e V) along with moderate upconversion yield was achieved. Our work provides the solution and guidance for the future development of purely organic heavy atom-free NIR activating TTA upconversion system for a wide array of applications.

关键词： Heavy atom-free Triplet state Photosensitizer TTA-upconversion

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基于蒽核深蓝光材料的合成及电致发光性能

发光学报 2024年第2期45卷 269-279页

作者：张越华邢龙江聂飞陈文铖穆英啸彭少洪何念孙宇曦曾庆明霍延平广州城市职业学院广东广州510405 广东工业大学轻工化工学院广东广州510006 广东硕成科技股份有限公司广东韶关512600 广东工业大学分析测试中心广东广州510006

以蒽作为三线态‐三线态湮灭(TTA)型蓝光材料的基元,通过在蒽的9和10位分别引入弱给电子基团二苯并噻吩和弱吸电子基团苯氰,设计合成了两个给体‐受体型深蓝光TTA材料4‐(10‐(二苯并[b,d]噻吩‐4‐基)蒽‐9‐基)苯腈(2)和4‐(10‐(二苯... 详细信息

以蒽作为三线态‐三线态湮灭(TTA)型蓝光材料的基元,通过在蒽的9和10位分别引入弱给电子基团二苯并噻吩和弱吸电子基团苯氰,设计合成了两个给体‐受体型深蓝光TTA材料4‐(10‐(二苯并[b,d]噻吩‐4‐基)蒽‐9‐基)苯腈(2)和4‐(10‐(二苯并[b,d]噻吩‐2‐基)蒽‐9‐基)苯腈(3),并对它们的热稳定性、电化学性质、光物理性质及电致发光性质进行了系统表征。在纯膜状态下,两个化合物的光致发光峰分别位于445 nm和451 nm处,光致发光量子产率分别为40.2%和57.9%。基于化合物2和3的非掺杂器件的电致发光峰分别位于448 nm和458 nm处,实现了深蓝光发射。两个器件获得了较好的发光效率,其最大电流效率分别为4.2 cd·A^(-1)和6.9 cd·A^(-1),最大功率效率分别为2.3 lm·W^(-1)和3.6 lm·W^(-1),最大外量子效率分别为3.8%和5.6%。即使在1 000 cd·m^(-2)亮度下,两个器件的外量子效率依然保持在3.7%和5.4%,表现出极低的效率滚降。

关键词：蒽二苯并噻吩苯氰深蓝光TTA材料