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Alkyl chain modulation of asymmetric hexacyclic fused acceptor synergistically with wide bandgap third component for high efficiency ternary organic solar cells

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International Journal of Minerals,Metallurgy and Materials 2024年第7期31卷 1713-1719页

作者： Shufang Li Huilan Guan Can Zhu Chaoyuan Sun Qingya Wei Jun Yuan yingping zou College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China Institute of Carbon Neutrality and New Energy School of Electronics and InformationHangzhou Dianzi UniversityHangzhou 310018China

Herein,two asymmetric hexacyclic fused small molecule acceptors(SMAs),namely BP4F-HU and BP4F-UU,were *** elongated outside chains in the BP4F-UU molecule played a crucial role in optimizing the morphology of blend film,thereby improving charge mobility and reducing energy loss within the corresponding ***,the PM6:BP4F-UU device exhibited a higher open-circuit voltage(V_(oc))of 0.878 V compared to the PM6:BP4F-HU device with a V_(oc)of 0.863 ***,a new wide bandgap SMA named BTP-TA was designed and synthesized as the third component to the PM6:BP4F-UU host binary devices,which showed an ideal complementary absorption spectrum in PM6:BP4F-UU *** addition,BTP-TA can achieve efficient intermolecular energy transfer to BP4F-UU by fluorescence resonance energy transfer(FRET)pathway,due to the good overlap between the photoluminescence(PL)spectrum of BTP-TA and the absorption region of ***,ternary devices with 15wt%BTP-TA exhibits broader photon utilization,optimal blend morphology,and reduced charge recombination compared to the corresponding binary ***,PM6:BP4F-UU:BTP-TA ternary device achieved an optimal power conversion efficiency(PCE)of 17.83%with simultaneously increased V_(oc)of 0.905 V,short-circuit current density(J_(sc))of 26.14 mA/cm^(2),and fill factor(FF)of 75.38%.

关键词： asymmetric hexacyclic acceptor outside chain wide bandgap acceptor ternary organic solar cells

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晶硅太阳能电池制备过程中硅渣和金刚石线切割硅废料的回收利用研究进展

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中南大学学报（自然科学版） 2024年第7期55卷 2456-2467页

作者：何乾范斌宋剑飞邹应萍伍继君马文会中南大学化学化工学院湖南长沙410083 中南大学资源循环研究院湖南长沙410083 昆明理工大学冶金与能源工程学院云南昆明650093

随着晶硅太阳能电池的快速发展,晶体硅片的需求大幅增加。晶体硅片在生产制备过程中,大量的硅以硅渣和金刚石线切割硅废料的形式流失。硅渣和金刚石线切割硅废料中硅的回收再循环利用对降低晶硅太阳能电池的成产成本、有效解决晶体硅片... 详细信息

随着晶硅太阳能电池的快速发展,晶体硅片的需求大幅增加。晶体硅片在生产制备过程中,大量的硅以硅渣和金刚石线切割硅废料的形式流失。硅渣和金刚石线切割硅废料中硅的回收再循环利用对降低晶硅太阳能电池的成产成本、有效解决晶体硅片短缺以及环境污染等问题具有重要意义。本文通过对从硅渣和金刚石线切割硅废料中回收制备高纯硅的现有工艺和研究进展进行综述,对不同回收工艺的优势、缺陷以及改进措施进行分析,有助于研究人员选择合理的高纯硅回收策略,为晶硅太阳能电池产业的低成本、绿色可持续发展提供参考。

关键词：晶硅太阳能电池硅渣金刚石线切割硅废料高纯硅回收

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Ion transporters: emerging agents for anticancer therapy

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Science China Chemistry 2022年第7期65卷 1265-1278页

作者： Tengfei Yan Xin Zheng Shengda Liu yingping zou Junqiu Liu State Key Laboratory of Powder Metallurgy College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China College of Material Chemistry and Chemical EngineeringKey Laboratory of Organosilicon Chemistry and Material TechnologyMinistry of EducationKey Laboratory of Organosilicon Material Technology of Zhejiang ProvinceHangzhou Normal UniversityHangzhou 311121China

Natural ion channels are pore-forming proteins that allow ions to pass through biomembranes, playing pivotal roles in almost all facets of cellular physiological functions. Biomimetic ion transporters were initially investigated for the purpose of treating lifethreatening channelopathies. Recent studies have indicated that membrane-active synthetic ionophores possess desirable anticancer bioactivity against diverse cancer cell lines by disturbing intracellular ion homeostasis, triggering oxidative stress, and inducing apoptosis in tumors. Recent progress on ionophore-related antitumor therapeutics is comprehensively summarized in this review, including the molecular design principles, functional mechanisms, and characterization methods. Finally, we conclude this review by discussing the future opportunities and challenges in this field. It is anticipated that this review will provide an existing panoramic sketch and future directions toward the construction of novel ion transporters with simplified preparation procedures, enhanced biocompatibility, and desirable anti-proliferative activities, which may further accelerate their therapeutic applications in clinical treatments.

关键词： ion transporter ion homeostasis apoptosis anticancer treatment

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Predicting power conversion efficiency of binary organic solar cells based on Y6 acceptor by machine learning

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Journal of Energy Chemistry 2023年第7期82卷 139-147,I0004页

作者： Qiming Zhao Yuqing Shan Chongchen Xiang Jinglun Wang yingping zou Guangjun Zhang Wanqiang Liu School of Chemistry and Chemical Engineering Key Laboratory of Theoretical Organic Chemistry and Function Molecule of Ministry of EducationHunan University of Science and TechnologyXiangtan 411100HunanChina College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083HunanChina

Organic solar cells(OSCs)are a promising photovoltaic technology for practical ***,the design and synthesis of donor materials molecules based on traditional experimental trial-anderror methods are often complex and expensive in terms of money and *** learning(ML)can effectively learn from data sets and build reliable models to predict the performance of materials with reasonable accuracy.Y6 has become the landmark high-performance OSC acceptor *** collected the power conversion efficiency(PCE)of small molecular donors and polymer donors based on the Y6 acceptor and calculated their molecule structure *** we used six types of algorithms to develop models and compare the predictive performance with the coefficient of determination(R^(2))and Pearson correlation coefficient(r)as the *** them,decision tree-based algorithms showed excellent predictive capability,especially the Gradient Boosting Regression Tree(GBRT)models based on small molecular donors and polymer donors exhibited that the values of R2are 0.84 and 0.69 for the testing set,*** work provides a strategy to predict PCEs rapidly,and discovers the influence of the descriptors,thereby being expected to screen high-performance donor material molecules.

关键词： Machine learning Binary organic solar cells Y6 PCE

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Novel photoelectrochemical immunosensor for MCF-7 cell detection based on n-p organic semiconductor heterojunction

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Chinese Chemical Letters 2022年第6期33卷 2954-2958页

作者： Qin Zeng Qingya Wei Jiarong Luo Yong Qian Minghui Yang yingping zou Limin Lu Hunan Provincial Key Laboratory of Micro&Nano Materials Interface Science College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China Institute of Functional Materials and Agricultural Applied Chemistry College of ScienceJiangxi Agricultural UniversityNanchang 330045China Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation East China University of TechnologyNanchang 330013China

In this work,we developed a novel photoelectrochemical(PEC)sensor based on n-p organic semiconductor heterojunction for sensitive detecting MCF-7 cancer ***-C4 Ph and PM6 were designed as photoactive materials to form n-p heterojunction,which greatly enhanced the photoelectric conversion ***-modified magnetic nanoparticles were utilized to capture and separate MCF-7 cells from *** of MCF-7 is ascribed to the loading of MCF-7 onto BTA-C4 Ph-PM6 modified electrode that resulted in the decrease of photocurrent *** PEC immunosensor displayed a linear concentration ranging from 50 cell/m L to 1×10^(4) cell/m L with a limit of detection(LOD)of 41 cell/m L(S/N=3)for ***,the senor also exhibited good stability,excellent selectivity and prominent ***,the sensor was successfully applied to detect MCF-7 in whole *** work illustrates that n-p heterojunction of organic semiconductor may find wide applications for the preparation of different photoelectrochemical sensors.

关键词： Photoelectrochemical immunosensor Organic semiconductors n-p Heterojunction MCF-7

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Manipulating molecular aggregation and crystalline behavior of A-DA’D-A type acceptors by side chain engineering in organic solar cells

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Aggregate 2022年第3期3卷 13-18页

作者： Wei Liu Rui Zhang Qingya Wei Can Zhu Jun Yuan Feng Gao yingping zou State Key Laboratory of Powder Metallurgy College of Chemistry and Chemical EngineeringCentral South UniversityChangshaP.R.China Department of Physics Chemistry and Biology(IFM)Linköping UniversityLinköpingSweden Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijingP.R.China

Alkyl chains engineering plays an important role in photovoltaic materials for organic solar ***,three A-DA’D-A(acceptor–donor–acceptor’–donor–acceptor)type acceptors named Y6,Y6-C4,and Y6-C5 with different branching position on the pyrrole motif are discussed and the relationship between molecular aggregation,crystalline,and device performance are systematically *** distance between the branching position and the main backbone affects their optical absorption and energy levels.Y6-C4 and Y6-C5 with the branching position at the fourth and fifth carbon of the alkyl chain show blue-shifted absorption and increased electrochemical bandgaps,compared with Y6 with the branching position at the second carbon of the alkyl side *** addition,this distance influences the molecular aggregation and crystalline behavior of the donor/acceptor *** with Y6-C4,Y6-C5 possesses a stronger crystalline and aggregate ability in the blends with a lower non-radiative energy loss,which results in a higher open circuit voltage(Voc)of 0.88 ***,Y6-C5-based binary device achieved a high power conversion efficiency up to 16.73%with afill factor(FF)of *** results demonstrate that the side chain engineering is an effective strategy for tuning the molecular aggregation and crystalline to improve photovoltaic performance of the A-DA’D-A type acceptors.

关键词： A-DA’D-A type acceptor aggregation side chain engineering

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Synergetic Alkoxy Side-Chain and Chlorine-Contained End Group Strategy toward High Performance Ultra-Narrow Bandgap Small Molecule Acceptors

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Chinese Journal of Chemistry 2023年第20期41卷 2664-2670页

作者： Qingya Wei Songting Liang Beibei Qiu Wei Liu Xiang Xu Xinhui Lu Yuang Fu Jun Yuan yingping zou State Key Laboratory of Powder Metallurgy College of Chemistry and Chemical EngineeringCentral South UniversityChangsha Hunan 410083China Key Laboratory of Solid State Optoelectronic Devicesof Zhejiang Province College of Physics and Electronic Information EngineeringZhejiang Normal UniversityJinhuaZhejiang 321004China Departmentof Physics The Chinese University of Hong KongNew TerritoriesHong Kong 999077China School of Materials Science and Engineering Zhengzhou UniversityZhengzhouHenan 450001China

Ultra-narrow bandgap(ultra-NBG)small molecule acceptors(SMAs)show great potential in organic solar cells(OSCs)due to the extended near-infrared(NIR)*** this work,a synergetic alkoxy side-chain and chlorine-contained end group strategy is employed to achieve A-DA'D-A type ultra-NBG SMAs by introducing alkoxy chains with oxygen atom at the second position into the thiopheneβposition as well as replacing the F atoms with Cl atoms in the end *** a result,the heptacyclic BZO-4F shows a redshifted absorption onset(960 nm)compared with Y11(932 nm)without oxygen atoms in the side ***,the fluorinated end groups are substituted with the chlorinated ones to synthesize *** absorption onset of BZO-4Cl is further redshifted to 990 nm,corresponding to an optical ultra-NBG of 1.25 *** blending with the polymer donor PBDB-T,the binary devices based on PBDB-T:BZO-4F and PBDB-T:BZO-4Cl deliver power conversion efficiencies(PCEs)over 12%.Furthermore,ternary devices with the addition of BZ4F-O-1 into PBDB-T:BZO-4Cl system achieve the optimal PCE of 15.51%.This work proposes a synergetic alkoxy side-chain and chlorine-contained end group strategy to achieve A-DA'D-A type ultra-NBG SMAs,which is important for future molecular design.

关键词： Organic solar cells A-DA'D-A type small molecule acceptors Ultra-narrow bandgap Alkoxy side chains Ternary strategy π-πstacking

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A-DA’D-A Type Pentacyclic Small Molecule Acceptors to Exceed 16.5%Efficiency by Heteroatom Effect at the Outer Side Chain

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Chinese Journal of Chemistry 2023年第15期41卷 1815-1822页

作者： Shaofeng Zhu Changzhou Shi Qingya Wei Can Zhu Jie Ren Jianghua Li Lei Meng Yongfang Li Jun Yuan yingping zou State Key Laboratory of Powder Metallurgy College of Chemistry and Chemical EngineeringCentral South UniversityChangshaHunan 410083China Beiing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China. MOE Key Laboratory of Macromolecular Synthesis and Functionalization International Research Center for X PolymersDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhouZhejiang 310027China

Comprehensive Summary In this work,we adopt a“heteroatom side-chains”modification strategy to modify the thiophene units in A-DA'D-A(acceptor-donor-acceptor’-donor-acceptor)type pentacyclic SMAs(small molecule acceptors),that is,introducing branched alkyl chain at theβ-position of thiophene instead of straight alkyl chain,and then introducing oxygen atom at the third-position on the basis of branched *** new pentacyclic SMAs(BZ4F-EH and BZ4F-OEH)were synthesized,and the influence of the heteroatom side-chains on photoelectric properties of A-DA'D-A type pentacyclic SMAs was systematically *** with our previously reported BZ4F(Y26),BZ4F-EH shows slightly blue-shifted absorption,while BZ4F-OEH has obvious red-shifted *** a result,BZ4F-OEH-based binary device achieved a high power conversion efficiency(PCE)of 16.56%with a fill factor(FF)of 79.3%,which is the highest efficiency of pentacyclic SMAs to date.

关键词： Organic solar cells Small molecule acceptors A-DA'D-A type structure Heteroatom side chains Substituent effects

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Alkyl side chain engineering enables high performance as-cast organic solar cells of over 17%efficiency

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Fundamental Research 2023年第4期3卷 611-617页

作者： Xiang Xu Yazhou Qi Xiaoyan Luo Xinxin Xia Xinhui Lu Jun Yuan Yonghua Zhou yingping zou State Key Laboratory of Powder Metallurgy College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China Department of Physics The Chinese University of Hong KongNew TerritoriesHong Kong 999077China

Achieving high-performance as-cast OSCs is crucial for industrialization in the future,owing to the advantages of better stability,environmental-friendly,and decreasing production *** this regard,we synthesized an ADA′D-A type acceptor,Y6-eC6-BO,by shortening the straight alkyl side-chains on the thiophene position from C_(11) to C_(6) as well as lengthening the branched alkyl side-chains on the pyrrole position of Y6 to achieve a stronger crystallization and better miscibility than *** a result,the corresponding chloroform-processed as-cast PM6:Y6-eC6-BO OSC showed a high PCE of 17.33%,which was one of the highest efficiencies of as-cast *** the as-cast PM6:Y6-eC6-BO OSCs processed from o-xylene displayed a PCE of 16.38%,as far as we know,this is among the highest efficiencies of non-halogenated-solvent processed as-cast *** results demonstrated tailoring the alkyl side-chain of NFAs is a feasible and simple approach to achieve high performance as-cast OSCs and provides guideline in molecular design in the future.

关键词： Organic solar cells Alkyl side chains As-cast Green solvent Stability

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A-π-A structured non-fullerene acceptors for stable organic solar cells with efficiency over 17%

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Science China Chemistry 2022年第7期65卷 1374-1382页

作者： Wei Liu Jun Yuan Can Zhu Qingya Wei Songting Liang Huotian Zhang Guanhaojie Zheng Yunbin Hu Lei Meng Feng Gao Yongfang Li yingping zou State Key Laboratory of Powder Metallurgy College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China Biomolecular and Organic Electronics IFMLinköping University58183 LinköpingSweden Shanghai Synchrotron Radiation Facility(SSRF) Zhangjiang LabShanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China

With the development of photovoltaic materials, especially the small molecule acceptors(SMAs), organic solar cells(OSCs)have made breakthroughs in power conversion efficiencies(PCEs). However, the stability of high-performance OSCs remains a critical challenge for future technological applications. To tackle the inherent instability of SMA materials under the ambient conditions, much effort has been made to improve OSCs stability, including device modification and new materials design. Here we proposed a new electron acceptor design strategy and developed a “quasi-macromolecule”(QM) with an A-π-A structure,where the functionalized π-bridge is used as a linker between two SMAs(A), to improve the long-term stability without deteriorating device efficiencies. Such type of QMs enables excellent synthetic flexibility to modulate their optical/electrochemical properties, crystallization and aggregation behaviors by changing the A and π units. Moreover, QMs possess a unique long conjugated backbone combining high molecular weight over 3.5 k Da with high purity. Compared with the corresponding SMA BTP-4F-OD(Y6-OD), the devices based on newly synthesized A-π-A type acceptors QM1 and QM2 could exhibit better device stability and more promising PCEs of 17.05% and 16.36%, respectively. This kind of “molecular-framework”(A-π-A)structure provides a new design strategy for developing high-efficiency and-stability photovoltaic materials.

关键词： A-π-A type quasi-macromolecule new molecular design strategy high efficiency and long-term stability organic solar cells

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