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Fusing Thienoisoindigo to the conjugated Ribbons with Strong Absorption in the Second Near-Infrared Window

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CCS Chemistry 2022年第11期4卷 3497-3504页

作者： Yu Jiang Yaogang Zhang Yunfeng Deng Shaoqiang Dong Bo Li Yuanping Yi Zebing Zeng Hanjiao Chen Hao Luo Yanhou Geng Joint School of National University of Singapore Tianjin UniversityInternational Campus of Tianjin UniversityBinhai New CityFuzhou 350207 School of Materials Science and Engineering Tianjin Key Laboratory of Molecular Optoelectronic ScienceTianjin UniversityTianjin 300072 Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190 Institute ofMolecular Aggregation Science Tianjin UniversityTianjin 300072 State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082 Analytical&Testing Center Sichuan UniversityChengdu 610064 School of Optoelectronic Science and Engineering University of Electronic Science and Technology of China(UESTC)Chengdu 610054

Organic dyes with strong absorption in the second near-infrared(NIR-II)window(1000-1700 nm)have multiple ***,the design and synthesis of stable NIR-II absorbing organic dyes are very challenging and constantly defy our synthetic *** this work,we have successfully synthesized a series of soluble and stable fused thienoisoindigo(nThIID)*** absorption maximum(λ_(max))of the ribbons increases from 644 nm of 1ThIID to 1252 nm of ***,nThIIDs with n≥4 all display strong absorption in the NIR-II window with molar extinction coefficients(ε_(max))greater than 105 L mol^(−1)cm^(−1)atλ*** molecules are promising photothermal conversion dyes with photothermal conversion efficiencies of ca.60%under 1064 nm laser irradiation.

关键词： organic dyes second near-infrared window low bandgap thienoisoindigo conjugated molecules

Recent advances in perovskite/organic integrated solar cells

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Rare Metals 2021年第10期40卷 2763-2777页

作者： Qiang Guo Chen-Yun Wang Tasawar Hayat Ahmed Alsaedi Jian-Xi Yao Zhan-Ao Tan Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou 450002China State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China NAAM Research Group Faculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical TechnologyBeijing 100090China

The integrated perovskite/organic solar cell(IPOSC) is widely concerned as an effective approach to broaden the spectrum of perovskite solar cell(PerSC) by utilizing near-infrared light of lower bandgap organic semiconductor. Compared to tandem solar cells, the IPOSCs eliminate the preparation of the intermediate layer and simplify the manufacturing process, but retain the advantages of wide light harvesting. Meanwhile, the IPOSCs can maintain the open-circuit voltage as high as PerSCs. This review summarizes the recent developments of perovskite materials and low-bandgap organic conjugated materials applied in solar cells. Then, the working mechanism of IPOSCs and the recent developments of IPOSCs based on low-bandgap donor and acceptor materials are highlighted. Besides, the study of charge dynamic in IPOSC is summarized. Finally, the potential of IPOSCs and approach to improve device performance are also envisaged.

关键词： Organic solar cell Perovskite solar cell Perovskite/organic integrated solar cell conjugated molecules

Modulating the Helicity of Sugar-Substituted Perylene Diimide Self-assemblies by Solvent Polarilities

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中国化学:英文版 2015年第1期33卷 95-100页

作者： Qiang Guo Junchao Wang Lingyun Zhu Zhixiang Wei National Center for Nanoscience and Technology Beijing 10190China University of Chinese Academy of Sciences Beijing 100049China

Modulating the helicity of self-assemblies of conjugated molecules is important for their application in chiral *** this communication,solvent effect has been investigated on how to modulate the helicity of supramolecular assemblies of sugar-substituted perylenediimide(PTCDI-BAG)by using UV-Vis,circular dichroism spectroscopy and transmission electron ***-handed helical nanowires are obtained in the mixed solvent system of both N,N-dimethylformamide/ethanol(DMF/ethanol)and N,N-dimethylacetamide/ethanol(DMAC/ethanol).As changing the solvents into dimethyl sulfoxide/ethanol(DMSO/ethanol),ethylene glycol/ethanol(EG/ethanol),or N-methyl-2-pyrrolidone/ethanol(NMP/ethanol),only right-handed heical nanowires are *** chirality of supramolecular structures can be tuned by the controlling of the polarity of the solvents.A theoretical calculation is carried out to explain the chiral optical inversion phenomena of PTCDI-BAG aggregates in different solvents,which reveals that reversed CD spectra is due to the difference of clockwise and anticlockwise rotation of the dimer.

关键词： self-assembly solvent effect helicity conjugated molecules nanowire

Simulation of Inelastic Electron Tunnelling Spectroscopy on Different Contact Structures in 4,4＇-Biphenyldithiol Molecular Junctions

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Chinese Physics Letters 2008年第1期25卷 254-257页

作者：邹斌李宗良宋秀能王传奎 College of Physics and Electronics Shandong Normal University Jinan 250014

A first-principles computational method is developed to study the inelastic electron tunnelling spectroscopy （IETS） of 4,4＇-biphenyldithiol molecular junction with three different contact structures between the molecule and electrodes in the nonresonant regime. The obtained distinct IETS can be used to resolve the geometrical structure of the molecular junction. The computational results demonstrate that the IETS has certain selection rule for vibrational modes, where the longitudinal modes with the same direction as the tunnelling current have greatest contribution to the IETS. The thermal effect on the IETS is also displayed.

关键词： SELF-ASSEMBLED-MONOLAYER conjugated molecules CHARGE-TRANSPORT DEVICES

Design and Synthesis of Acceptor-Donor-Acceptor Type Non-Fullerene Acceptors Using Oxindole-Based Bridge for Polymer Solar Cells Applications

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Journal of Donghua University(English Edition) 2022年第3期39卷 272-280页

作者： GUO Yuqing HUANG Jun LI Zheng WU Hongbo WANG Jing TANG Zheng MA Zaifei WANG Ming ZHU Zhijia Key Laboratory of Science and Technology of Eco-Textiles Ministry of Education College of Chemistry Chemical Engineering & Biotechnology Donghua University Shanghai 201620 China Center for Advanced Low-dimension Materials State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 China

Two acceptor-donor-acceptor(A-D-A)type non-fullerene acceptors(namely WH1 and WH7)containing the oxindole-based bridge are designed and synthesized for polymer solar cells(PSCs)*** bridge unit is introduced through a precursor(6-bromo-1-octylindoline-2,3-dione)that contains both bromine and carbonyl and provides the feasibility of the Pd-catalyzed cross-coupling reaction and the Knoevenagel condensation,*** facile synthetic approach exhibits the potential to gain high performance non-fullerene acceptors through extendingπ-conjugated backbone with strong light-absorbing building *** synthesis and properties of WH1 and WH7 are demonstrated with different endcap units,then PSCs are fabricated using PBDB-T:WH1 and PBDB-T:WH7 as the active layers,and attain an average power conversion efficiency(PCE)of 2.58%and 6.24%,*** device physics studies afford the deep insight of structure variation influence on the device *** work provides a facile non-fullerene acceptor design strategy and shows how structure variations impact the PSC performance.

关键词： non-fullerene acceptor polymer solar cell(PSC) conjugated molecules donor-acceptor(D-A) narrow bandgap

Accurate Force Field Development for Modelling Macromolecular Assemblies Containing Diketopyrrolopyrrole and Thiophene

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Accurate Force Field Development for Modelling Macromolecula...