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Introducing alkoxy groups as outer side chains and substituents ofπ-bridges obtains high-performance medium-bandgap polymerized small molecule acceptors

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中国科学:化学英文版 2023年第10期66卷 2912-2920页

作者： Yufei Gong Tianwei Zou Xiaojun Li Hongmei Zhuo shucheng qin Guangpei Sun Lei Meng Yongfang Li Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China School of Chemical Science University of Chinese Academy of SciencesBeijing 100049China Laboratory of Advanced Optoelectronic Materials College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China

The medium-bandgap polymerized small molecule acceptors(PSMAs)have broad application ***,the effort in the molecular design of the high-performance medium-bandgap PSMAs is *** this article,we introduce alkoxy groups as outer side chains and as substituents of the thiopheneπ-bridges of the high-performance PSMA PY-IT to synthesize a mediumbandgap PSMA *** to the fact that the non-covalent interaction between the alkoxy groups and the terminal groups of the small molecule acceptor(SMA)unit can weaken the intramolecular charge transfer(ICT)effect,the bandgap of PO-TO is enlarged and its absorption is blue-shifted compared with PY-IT,while the absorbance of PO-TO solution and film is enhanced significantly compared with that of *** blended PO-TO with the polymer donor PBQx-TF,the corresponding all-polymer solar cells(all-PSCs)exhibit an open-circuit voltage(V_(oc))exceeding 1.04 V with a power conversion efficiency(PCE)of 13.75%.Furthermore,PO-TO was used as the third component to fabricate ternary all-PSCs with PBQx-TF as the polymer donor and PY-IT as the main polymer acceptor,and the ternary all-PSCs based on PBQx-TF:PY-IT:PO-TO(1:1:0.2,w/w/w)demonstrated a high PCE of 17.71%with simultaneously improved V_(oc)of 0.940 V,short-circuit current density(J_(sc))of 24.60 m A cm^(-2)and fill factor(FF)of76.81%.In comparison,the binary all-PSCs based on PBQx-TF:PY-IT showed a PCE of 16.77%.This result indicates that introducing alkoxy groups is a promising strategy for synthesizing high-performance medium-bandgap PSMAs.

关键词： polymerized small molecule acceptors medium bandgap PSMAs all-polymer solar cells ternary all-PSCs alkoxy substituents

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18.55% Efficiency Polymer Solar Cells Based on a Small Molecule Acceptor with Alkylthienyl Outer Side Chains and a Low-Cost Polymer Donor PTQ10

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CCS Chemistry 2023年第4期5卷 841-850页

作者： Xiaolei Kong Jinyuan Zhang Lei Meng Chenkai Sun shucheng qin Can Zhu Jianqi Zhang Jing Li Zhixiang Wei Yongfang Li Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190 School of Chemical Science University of Chinese Academy of SciencesBeijing 100049 College of Chemistry Green Catalysis CenterZhengzhou UniversityZhengzhou 450001 CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanPSCienceNational Center for NanPSCience and Technology100190 Beijing Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190 Laboratory of Advanced Optoelectronic Materials Suzhou Key Laboratory of Novel Semiconductor Materials and DevicesCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu 215123

The development of A-DA′D-A type small molecule acceptors(SMAs)has promoted the rapid progress of polymer solar cells(PSCs)in recent *** outer side chains on the terminal thiophene ring and inner side chains on nitrogen atoms of the pyrrole ring of the DA′D fused ring play important roles in the photovoltaic performance of the ***,we synthesized two new SMAs,2,2′-((2Z,2′Z)-((12,13-bis(2-ethylhexyl)-3,9-bis(4-(2-ethylhexyl)thiophen-2-yl)-12,13-dihydro-[1,2,5]thiadiazolo[3,4-e]thieno[2″,3″:4′,5′]thieno[2′,3′:4,5]pyrrolo[3,2-g]thieno[2′,3′:4,5]thieno[3,2-b]indole-2,10-diyl)bis(methaneylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile(T2EH)and 2,2′-((2Z,2′Z)-((12,13-bis(2-ethylhexyl)-3,9-bis(3-(2-ethylhexyl)phenyl)-12,13-dihydro-[1,2,5]thiadiazolo[3,4-e]thieno[2″,3″:4′,5′]thieno[2′,3′:4,5]pyrrolo[3,2-g]thieno[2′,3′:4,5]thieno[3,2-b]indole-2,10-diyl)bis(methaneylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene)(P2EH),with 2-ethylhexylβ-substituted thienyl or phenyl as the outer side chains,respectively,to improve the photovoltaic properties of the *** with P2EH,T2EH exhibits closerπ−πstacking,slightly red-shifted absorption,and higher electron ***,the active layer of T2EH blended with the low-cost polymer donor poly[(thiophene)-alt-(6,7-difluoro-2-(2-hexyldecyloxy)quinoxaline)](PTQ10)possesses higher mobilities,a longer lifetime,and less recombination of the charge carriers in comparison with that of the PTQ10:P2EH active ***,the PTQ10:T2EH-based PSCs showed an outstanding power conversion efficiency(PCE)of 18.55%,while the PSC based on PTQ10:P2EH displayed a PCE of 17.50%.Importantly,18.55%is the highest PCE in the PTQ10-based binary PSCs so *** results indicate that T2EH is one of the best SMAs for the PTQ10-based PSCs and is a promising SMA for the application of PSCs.

关键词： polymer solar cells A-DA′D-A type small molecule acceptors side chain engineering thiophene conjugated side chains

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High-Performance D-A Copolymer Donor Based on Difluoroquinoxaline A-Unit with Alkyl-Chlorothiophene Substituents for Polymer Solar Cells

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CCS Chemistry 2023年第10期5卷 2378-2388页

作者： Can Zhu Ke Hu Lei Meng Xiaolei Kong Wenbin Lai shucheng qin Beibei Qiu Jinyuan Zhang Zhanjun Zhang Yilei Wu Xiaojun Li Yongfang Li Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190 School of Chemical Science University of Chinese Academy of SciencesBeijing 100049 Key Laboratory of Solid State Optoelectronic Devices of Zhejiang Province College of Physics and Electronic Information EngineeringZhejiang Normal UniversityJinhuaZhejiang 321004 Department of Chemical Engineering Stanford UniversityStanfordCalifornia 94305-4125 Laboratory of Advanced Optoelectronic Materials College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu 215123

Side chain engineering with fluorine substitution is widely used to enhance photovoltaic performance of polymer donors in the research field of polymer solar cells(PSCs).However,fluorine substitution has disadvantages of complicated synthesis and high ***,we synthesized a novel D-A copolymer donor PBQ9 based on difluoroquinoxaline A-unit with chlorine substitution on its alkyl-thiophene side chains instead of fluorine substitution in the polymer donor PBQ6,which greatly shortens the synthetic route and reduces the ***,the optimized binary PSC with PBQ9 as polymer donor and m-TEH as acceptor demonstrated a high power conversion efficiency(PCE)of 18.81%(certified PCE of 18.33%by National Institute of Metrology,China)with a high fill factor of 80.59%,and the photovoltaic performance of the PSCs is insensitive to the different batches of the polymer *** results indicate that PBQ9 is a high-performance polymer donor and that chlorine substitution is an effective strategy to improve photovoltaic performance and reduce the cost of polymer donors.

关键词： D-A copolymer donors polymer solar cells difluoroquinoxaline A-unit chlorothiophene substituents

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Stable perovskite solar cells with efficiency of 22.6%via quinoxaline-based polymeric hole transport material

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Science China Chemistry 2021年第11期64卷 2035-2044页

作者： Chenxing Lu Can Zhu Lei Meng Chenkai Sun Wenbin Lai shucheng qin Jinyuan Zhang Wenchao Huang Jiaqi Du Yiyang Wang Yongfang Li Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China School of Chemical Science University of Chinese Academy of SciencesBeijing100049China College of Chemistry Green Catalysis CenterZhengzhou UniversityZhengzhou450001China Department of Materials Science and Engineering Monash UniversityClaytonVIC3168Australia State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan528216China Laboratory of Advanced Optoelectronic Materials College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou215123China

Poor stability of spiro-OMe TAD hole transport materials(HTMs)with dopant is a major obstacle for the commercialization of perovskite solar cells(pero-SCs).Herein,we demonstrate a series of quinoxaline-based D-A copolymers PBQ5,PBQ6 and PBQ10 as the dopant-free polymer HTMs for high performance *** D-A copolymers are composed of fluorothienyl benzodithiophene(BDTT)as D-unit,difluoroquinoxaline(DFQ)with different side chains as A-unit,and thiophene asπ-bridge,where the side chains on the DFQ unit are bi-alkyl for PBQ5,bi-alkyl-fluorothienyl for PBQ6,and alkoxyl for *** the three copolymers are adopted as the dopant-free HTM in the *** planar n-i-p structured pero-SCs based on(FAPb I_(3))_(0.98)(MAPb Br_(3))_(0.02)with PBQ6 HTM demonstrated the high power conversion efficiency(PCE)of 22.6%with Vocof1.13 V and FF of 80.8%,which is benefitted from the suitable energy level and high hole mobility of *** PCE of 22.6%is the highest efficiency reported in the n-i-p structured pero-SCs based on dopant-free D-A copolymer *** addition,the peroSCs show significantly enhanced ambient,thermal and light-soaking stability compared with the devices with traditional spiroOMe TAD HTM.

关键词： perovskite solar cells hole transport materials D-A copolymer difluoroquinoxaline stability

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辛基取代喹喔啉聚合物给体使全聚合物有机太阳能电池的效率超过17%

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Science Bulletin 2022年第20期67卷 2096-2102,M0004页

作者：胡克朱灿秦书诚赖文彬杜家琦孟磊张占军李永舫 School of Chemical Science University of Chinese Academy of SciencesBeijing 100049China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China Laboratory of Advanced Optoelectronic Materials Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and DevicesCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou215123China

本文设计并合成了一种新型喹喔啉类聚合物给体PBQ8,其在喹喔啉单元上具有正辛基侧链,与先前报道的PBQ5(异辛基侧链)具有相同的聚合物骨架结构.与PBQ5相比,PBQ8表现出更强的分子间相互作用和更好的分子堆积.当其与聚合物受体PY-IT共混时... 详细信息

本文设计并合成了一种新型喹喔啉类聚合物给体PBQ8,其在喹喔啉单元上具有正辛基侧链,与先前报道的PBQ5(异辛基侧链)具有相同的聚合物骨架结构.与PBQ5相比,PBQ8表现出更强的分子间相互作用和更好的分子堆积.当其与聚合物受体PY-IT共混时,基于PBQ8:PY-IT的全聚合物太阳能电池表现出远高于PBQ5:PY-IT器件效率,其能量转化效率为17.04%,这是目前全聚合物太阳能电池中的最高效率之一.结果表明,聚合物给体的侧链工程是进一步提高全聚合物太阳能电池光伏性能的有效途径.

关键词：有机太阳能电池聚合物给体全聚合物太阳能电池能量转化效率聚合物骨架分子间相互作用喹喔啉光伏性能

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急性髓系白血病病人免疫球蛋白κ链C区蛋白和趋化因子配体2表达及意义

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蚌埠医学院学报 2024年第5期49卷 641-645页

作者：黄丹秦超陈书成北京市大兴区人民医院输血科 102600 北京市大兴区人民医院检验科 102600

目的:探讨急性髓系白血病病人免疫球蛋白κ链C区蛋白(IGKC)、趋化因子配体2(CCL2)表达水平及临床意义。方法:选取急性髓系白血病病人80例作为观察组,另选取同期体检健康者40名作为对照组。采用酶联免疫吸附法检测2组病人血清IGKC、CCL2... 详细信息

目的:探讨急性髓系白血病病人免疫球蛋白κ链C区蛋白(IGKC)、趋化因子配体2(CCL2)表达水平及临床意义。方法:选取急性髓系白血病病人80例作为观察组,另选取同期体检健康者40名作为对照组。采用酶联免疫吸附法检测2组病人血清IGKC、CCL2水平,并比较观察组不同分型病人血清IGKC、CCL2水平;Pearson法分析观察组病人IGKC、CCL2水平与降钙素原(PCT)、C反应蛋白(CRP)的相关性;ROC曲线分析血清IGKC、CCL2、PCT及CRP水平对观察组不同分型病人的诊断价值。结果:观察组病人血清IGKC、CCL2、PCT、CRP水平均明显高于对照组(P<0.01);不同WHO分型、ELN分型病人血清IGKC、CCL2、PCT、CRP水平间差异均有统计学意义(P<0.01),其中,M3~M4型、M5~M6型病人血清IGKC、CCL2、PCT、CRP水平均高于M1~M2型(P<0.05);与良好型病人相比,中等型和不良型病人血清IGKC、CCL2、PCT、CRP水平均高于良好型病人(P<0.05)。Pearson相关分析显示,观察组病人血清IGKC与CCL2、PCT、CRP均呈正相关关系(r=0.393、0.302、0.487,P<0.05),CCL2与PCT、CRP均呈正相关关系(r=0.510、0.516,P<0.05)。ROC曲线分析结果显示,血清IGKC、CCL2诊断M1~M2型及M5~M6型急性髓系白血病水平较高,AUC均达到0.75以上。结论:急性髓系白血病病人血清IGKC、CCL2均呈高表达,二者对急性髓系白血病有一定的辅助诊断价值。

关键词：急性髓系白血病免疫球蛋白κ链C区蛋白趋化因子配体2

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Prime Mover Capacity Optimization and Thermodynamic Performance Analysis of Internal Combustion Engine Based CCHP System

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Journal of Thermal Science 2023年第4期32卷 1583-1594页

作者： WANG shucheng MUHAMMAD Imran LI Hongwei CHEN Xiaoxu qin Mei School of Energy and Power Engineering Northeast Electric Power UniversityJilin132012China College of Engineering and Physical Sciences MechanicalBiomedical and Design EngineeringAston UniversityBirminghamB47ETUK Northeast Electric Power Design Institute Co. Ltd.of China Power Engineering Consulting GroupChangchun130021China

In this research,a solar hybrid combined cooling heating and power(CCHP)system is proposed considering the different scenarios of Prime Movers(PMs)and the part-load performance of PMs is validated by the designed values from the manufacturer of ***,a multi-optimization model based on a genetic algorithm is developed in order to select both the most promising performance PM and the most cost-effectiveness,environmentally friendly number of collectors for the proposed CCHP system,*** the hourly performance of this solar hybrid CCHP is determined through a case study of a hotel in *** show that the highest efficiency of the PM with larger capacity has the most promising performance and the collector number of 90 turns out to be a superior value for the hotel building based on the primary energy saving ratio of 61.61%.Moreover,on a typical summer day,the recovered waste heat and the solar energy can provide all the thermal energy demands,while,an auxiliary boiler should be started to fulfill the energy gap in both typical transition and winter *** the simulation result,the CO_(2) emissions can be reduced by 856.2 t/a due to the solar energy introduced into the ***,the dynamic investment payback period will change from 3.01 years to 3.56 years when the fuel price(P_(fuel))ranges from 0.8P_(fuel) to1.2P_(fuel).

关键词： combined cooling heating and power(CCHP)system distributed energy system optimization waste heat recovery ICE

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硅烷偶联剂KH-550对纳米晶纤维素/炭黑/天然橡胶复合材料性能的影响

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橡胶工业 2017年第5期64卷 279-284页

作者：古菊林路覃树成罗远芳贾德民华南理工大学材料科学与工程学院广东广州510641

试验研究硅烷偶联剂KH-550对纳米晶纤维素/炭黑/天然橡胶复合材料性能的影响。结果表明:加入硅烷偶联剂KH-550后,混炼胶的粘性模量和损耗因子减小,硫化胶的硬度和300%定伸应力增大,拉断永久变形减小,耐磨性能提高;当硅烷偶联剂KH-550用... 详细信息

试验研究硅烷偶联剂KH-550对纳米晶纤维素/炭黑/天然橡胶复合材料性能的影响。结果表明:加入硅烷偶联剂KH-550后,混炼胶的粘性模量和损耗因子减小,硫化胶的硬度和300%定伸应力增大,拉断永久变形减小,耐磨性能提高;当硅烷偶联剂KH-550用量为1~2份时,混炼胶的硫化特性和加工性能,硫化胶的交联密度、耐屈挠性能、压缩疲劳性能和耐磨性能明显改善。

关键词：天然橡胶硅烷偶联剂纳米晶纤维素炭黑补强

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Soil pH impact on microbial tetraether lipids and terrestrial input index (BIT) in China

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Science China Earth Sciences 2012年第2期55卷 236-245页

作者： YANG Huan DING WeiHua WANG JinXiang JIN ChengSheng HE GangQiang qin YangMin XIE shucheng State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences Wuhan 430074 China State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Wuhan 430074 China

The distributions of microbial tetraether lipids i.e. glycerol dialkyl glycerol tetraethers (GDGTs) were investigated in a variety of Chinese soils featured by a wide range of pH values in different climate zones. The bacterial branched GDGTs and archaeal isoprenoid GDGTs were found to be widely distributed in Chinese soils and their relative abundance was controlled primarily by soil pH. The bacterial bGDGTs usually dominate over archaeal iGDGTs in abundance when the soil pH is below 8.0. However archaeal iGDGTs become dominant and the abundance of halophilic archaea characterized by GDGT V without cyclopentyl ring increases dramatically in the alkaline soil with pH greater than 8.0. The relative abundance of archaeal iGDGTs to bacterial bGDGTs was defined here as RAI index. The RAI index decreases with elevated soil pH and a linear correlation is found between them indicating that the relative abundance of archaeal iGDGTs to bacterial bGDGTs increases with increased pH. The RAI index thus could be a novel proxy of the pH values of paleosol. The terrestrial input index BIT (Branched and Isoprenoid Tetraethers Index) decreases with increased soil pH suggesting that soil pH should be taken into consideration when the terrestrial contribution to marine sediments is estimated by BIT index. Moreover the TEX86 index cannot be used to reconstruct sea surface temperature in the sediments featured by a large terrestrial input.

关键词： pH值控制土壤微生物中国土壤输入功能陆地 BIT 土壤pH值海洋沉积物

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森林康养旅游者的认知与需求分析

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四川林业科技 2021年第3期42卷 120-125页

作者：黄妹李昌玉陶婷符英凡卢昌泰闻秋罗茂覃署城四川农业大学旅游学院四川都江堰611830 汶川县林业和草原局四川汶川623000

森林康养旅游作为一种新的生态经济发展模式,其发展受大众认知、经营者市场定位和产品供给等因素共同制约。选取四川省内典型森林康养基地,通过实地调查、问卷调查等方法,分析旅游者森林康养需求和主观态度,探索经营者市场定位及产品开... 详细信息

森林康养旅游作为一种新的生态经济发展模式,其发展受大众认知、经营者市场定位和产品供给等因素共同制约。选取四川省内典型森林康养基地,通过实地调查、问卷调查等方法,分析旅游者森林康养需求和主观态度,探索经营者市场定位及产品开发方式,为推进产业发展提供参考。结果表明:游客普遍关心自身身体健康状况,注重生活品质;超过半数的人对森林康养旅游认知模糊,但出游意愿较强,且动机需求多样,比较看重目的地的基础设施设备和交通便捷程度。

关键词：森林康养主观态度市场需求

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