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Improving current and mitigating energy loss in ternary organic photovoltaics enabled by two well-compatible small molecule acceptors

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Science China Chemistry 2021年第4期64卷 608-615页

作者： Yanna Sun huan-huan gao Simin Wu Lingxian Meng Xiangjian Wan Mengyang Li Zaifei Ma Ziqi Guo Shitong Li Hongtao Zhang Chenxi Li Yongsheng Chen State Key Laboratory and Institute of Elemento-Organic Chemistry The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer MaterialsInstitute of Polymer ChemistryRenewable Energy Conversion and Storage CenterCollege of ChemistryNankai UniversityTianjin 300071China Center for Advanced Low-dimension Materials Stage Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620China

Ternary organic photovoltaic(OPV)strategy is an effective but facile approach to enhance the photovoltaic performance for single-junction ***,a series of ternary OPVs were fabricated by employing a wide bandgap donor(PBDB-TF)and two acceptor-donor-acceptor(A-D-A)-type nonfullerene small molecule acceptors(NF-SMAs,called F-2 Cl and 3 TT-OCIC).As the third component,the near-infrared SMA,3 TT-OCIC,has complementary absorption spectrum,narrow bandgap and wellcompatible crystallization property to the host acceptor(F-2 Cl)for efficient ternary *** these,the optimal ternary devices yield significantly enhanced power conversion efficiency of 15.23%,one of the very few examples with PCE higher than15%other than Y6 *** is mainly attributed to the increased short-circuit current density of 24.92 m A cm^(-2) and dramatically decreased energy loss of 0.53 e *** work presents a successful example for simultaneously improving current,minimizing energy loss and together with modifying the morphology of active layers in OPVs,which will contribute to the further construction of high performance ternary OPVs.

关键词： organic photovoltaics ternary devices small molecule acceptors film morphology energy loss

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Immunohistochemical features of carcinoma ex pleomorphic adenoma and pleomorphic adenoma in the lacrimal gland

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International Journal of Ophthalmology(English edition) 2019年第8期12卷 1238-1242页

作者： Ping Zhang Li-Juan Tang huan-huan gao Wen-Xin Zhang Jian-Xian Lin Hua-Sheng Yang Department of Ocular Pathology State Key Laboratory ofOphthalmologyZhongshan Ophthalmic CenterSun Yat-senUniversityGuangzhou510060Guangdong ProvinceChina Department of Orbital Disease and Oncology State KeyLaboratory of OphthalmologyZhongshan Ophthalmic CenterSun Yat-sen UniversityGuangzhou510060GuangdongProvinceChina

AIM: To investigate C-myc, Ki-67, pan-cytokeratin, and vimentin immunohistochemical features of carcinoma ex pleomorphic adenoma(Ca-ex-PA) and pleomorphic adenoma(PA) in the lacrimal gland in order to find some clues in the differential diagnosis between ***: We reviewed microscopic slides and clinical records of 64 cases of PA and 15 cases of Ca-ex-PA in the lacrimal gland. Immunohistochemical antibodies for C-myc, Ki-67, pan-cytokeratin, and vimentin were ***: Median age of PA was 43.2 y(from 21 to 75). The 35 patients(54.7%) were male and 29 patients(45.3%) were female. For the PAs, the average positivity of C-myc was 4.6%;the average proliferation index of Ki-67 was 3.2%;pan-cytokeratin was positive in ductal cells, and vimentin was positive in myoepithelial cells. Median age of Ca-ex-PA was 54.3 y(from 26 to 76). There were 7 male patients(46.7%) and 8 female patients(53.3%). Among 15 Ca-ex-PAs, there were 6 myoepithelial carcinomas, 4 adenocarcinomas, 3 epithelial-myoepithelial carcinomas, and 2 squamous cell carcinomas. For the Ca-ex-PAs, the average positivity of C-myc was 36.4%;the average proliferation index of Ki-67 was 29.2%;pan-cytokeratin was positive in all cases, and vimentin was positive in myoepithelial ***: PA has a lower positivity of C-myc and Ki-67, while Ca-ex-PA had a higher positivity of these two biomarkers. These four biomarkers as a set could provide valuable clues in the differential diagnosis between Ca-exPA and PA. Our results indicate that the activation of C-myc could play an important role in the pathogenesis of Ca-exPA and PA.

关键词： carcinoma ex pleomorphic adenoma pleomorphic adenoma C-myc immunohistochemistry

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Gut bacterium promotes host fitness in special ecological niche by affecting sugar metabolism in Drosophila suzukii

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Insect Science 2023年第6期30卷 1713-1733页

作者： huan-huan gao Shan Zhao Rui-Juan Wang Dong-Yun Qin Peng Chen An-Sheng Zhang Qian-Ying Zhuang Yi-Fan Zhai Xian-Hong Zhou Institute of Plant Protection Shandong Academy of Agricultural SciencesJinanChina Shandong Academy of Grape JinanChina

As an important fruit pest of global significance,Drosophila suzukii occupies a special ecological niche,with the characteristics of high sugar and low protein *** niche differs from those occupied by other fruit-damaging Drosophila *** bacteria substantially impact the physiology and ecology of ***,the contribution of gut microbes to the fitness of *** in their special ecological niche remains *** this study,the effect of Klebsiella oxytoca on the development of *** was examined at physiological and molecular *** results showed that,after the removal of gut microbiota,the survival rate and longevity of axenic *** decreased *** of *** to the midgut of *** advanced the development level of *** differentially expressed genes and metabolites between axenic and ***-reintroduced *** were enriched in the pathways of carbohydrate *** advancement was achieved through an increased glycolysis rate and the regulation of the transcript level of key genes in the glycolysis/gluconeogenesis *** oxytoca is likely to play an important role in increasing host fitness in their high-sugar ecological niche by stimulating the glycolysis/gluconeogenesis *** a protein source,bacteria can also provide direct nutrition for ***,which depends on the quantity or biomass of *** result may provide a new target for controlling *** by inhibiting sugar metabolism through eliminating the effect of *** and thus disrupting the balance of gut microbial communities.

关键词： carbohydrate metabolism Drosophila suzuki glycolysis/gluconeogenesis Klebsiella oxytoca symbiotic bacteria

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Renewable biosynthesis of isoprene from wastewater through a synthetic biology approach:the role of individual organic compounds

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Frontiers of Environmental Science & Engineering 2024年第3期18卷 13-24页

作者： Min Yang Xianghui Li Weixiang Chao Xiang gao huan Wang Lu Lu State Key Laboratory of Urban Water Resource and Environment School of Civil and Environmental EngineeringHarbin Institute of TechnologyShenzhen 518055China Center for Materials Synthetic Biology CAS Key Laboratory of Quantitative Engineering Biology of CASShenzhen Institute of Synthetic BiologyShenzhen Institutes of Advanced TechnologyChinese Academic of ScienceShenzhen 518000China Institute of Urban Ecology and Environmental Technology School of Materials and Environmental EngineeringShenzhen Polytechnic UniversityShenzhen 518055China

The biosynthesis of isoprene offers a more sustainable alternative to fossil fuel-based approaches,yet its success has been largely limited to pure organic compounds and the cost remains a *** study proposes a waste-to-wealth strategy for isoprene biosynthesis utilizing genetically engineered *** bacteria to convert organic waste from real food *** impact of organic compounds present in wastewater on *** growth and isoprene production was systematically *** results demonstrated that with filtration pretreatment of wastewater,isoprene yield,and production achieved 115 mg/g COD and 7.1 mg/(L·h),***,even without pretreatment,isoprene yield only decreased by~24%,indicating promising ***,maltose,glycerol,and lactate are effective substrates for isoprene biosynthesis,whereas starch,protein,and acetate do not support *** *** optimum C/N ratio for isoprene production was found to be 8:***,augmenting essential nutrients in wastewater elevated the isoprene yield increased to 159 mg/g *** wastewater biosynthesis significantly reduced the cost(44%–53%decrease,p-value<0.01)and CO_(2)emission(46%–55%decrease,p-value<0.01)compared with both sugar fermentation and fossil fuel–based *** study introduced a more sustainable and economically viable approach to isoprene synthesis,offering an avenue for resource recovery from wastewater.

关键词： Wastewater Resource recovery Genetic engineering Biosynthesis Isoprene

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Small molecules facilitate single factor-mediated sweat gland cell reprogramming

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Military Medical Research 2022年第6期9卷 655-667页

作者： Shuai-Fei Ji Lai-Xian Zhou Zhi-Feng Sun Jiang-Bing Xiang Shao-Yuan Cui Yan Li Hua-Ting Chen Yi-Qiong Liu huan-huan gao Xiao-Bing Fu Xiao-Yan Sun Research Center for Tissue Repair and Regeneration Affiliated To Medical Innovation Research Department and 4th Medical Center PLA General Hospital and PLA Medical CollegePLAKey Laboratory of Tissue Repairand Regenerative Medicine and BeijingKey Research Laboratoryof Skin InjuryRepair and Regeneration28 FuXing RoadBeijing 100853China Research Unit of Trauma Care Tissue Repair and RegenerationChinese Academy of Medical Sciences2019RU051Beijing 100048China Departmentof Respiratory the Second Medical CenterChinese PLA General HospitalBeijing 100036China Bioengineering College of Chongqing University Chongqing 400044China Department of Nephrology the First Medical CenterChinese PLA General HospitalState Key Laboratory of Kidney DiseasesBeijing 100048China

Background: Large skin defects severely disrupt the overall skin structure and can irreversibly damage sweat glands(SGs), thus impairing the skin’s physiological function. This study aims to develop a stepwise reprogramming strategy to convert fibroblasts into SG lineages, which may provide a promising method to obtain desirable cell types for the functional repair and regeneration of damaged ***: The expression of the SG markers cytokeratin 5(CK5), cytokeratin 10(CK10), cytokeratin 18(CK18), carcinoembryonic antigen(CEA), aquaporin 5(AQP5) and α-smooth muscle actin(α-SMA) was assessed with quantitative PCR(qPCR), immunofluorescence and flow cytometry. Calcium activity analysis was conducted to test the function of induced SG-like cells(iSGCs). Mouse xenograft models were also used to evaluate the in vivo regeneration of ***/c nude mice were randomly divided into normal group, SGM treatment group and iSGC transplantation *** analyses and starch-iodine sweat tests were used to confirm the in vivo regeneration of ***: Ectodermal dysplasia antigen(EDA) overexpression drove human dermal fibroblast(HDF) conversion into i SGCs in SG culture medium(SGM). qPCR indicated significantly increased mRNA levels of the SG markers CK5, CK18and CEA in iSGCs, and flow cytometry data demonstrated(4.18±0.04)% of iSGCs were CK5 positive and(4.36±0.25)%of iSGCs were CK18 positive. The addition of chemical cocktails greatly accelerated the SG fate program. qPCR results revealed significantly increased mRNA expression of CK5, CK18 and CEA in iSGCs, as well as activation of the duct marker CK10 and luminal functional marker AQP5. Flow cytometry indicated, after the treatment of chemical cocktails,(23.05±2.49)% of iSGCs expressed CK5^(+) and(55.79±3.18)% of iSGCs expressed CK18^(+), respectively. Calcium activity analysis indicated that the reactivity of iSGCs to acetylcholine was close to that of primary SG cells [(60.79±7.71)% vs.(70.59±0.34)%

关键词： Direct reprogramming Human dermal fibroblasts Sweat gland Regeneration

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Structural optimization of acceptor molecules guided by a semi-empirical model for organic solar cells with efficiency over 15%

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Science China Materials 2021年第10期64卷 2388-2396页

作者： Lingxian Meng huan-huan gao Simin Wu Yanna Sun Xiangjian Wan Yang Yang Jian Wang Ziqi Guo Hongbin Chen Chenxi Li Yongsheng Chen The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials Institute of Polymer ChemistryState Key Laboratory of Elemento-Organic ChemistryCollege of ChemistryRenewable Energy Conversion and Storage Center(RECAST)Nankai UniversityTianjin 300071China The Institute of Seawater Desalination and Multipurpose Utilization Ministry of Natural Resources(Tianjin)Tianjin 300192China

Despite much progress in organic solar cells(OSCs),higher efficiency is still the most desirable goal and can indeed be obtained through rational design of active layer materials and device optimization according to the theoretical ***,under the guidance of a semi-empirical model,two new non-fullerene small molecule acceptors(NFSMAs)with an acceptor-donor-acceptor(A-D-A)architecture,namely,6 T-OFIC and 5 T-OFIC,have been designed and synthesized.6 T-OFIC exhibits wider absorption spectrum and a red-shifted absorption onset(λ_(onset))of 946 nm due to its extended conjugation central *** contrast,5 T-OFIC with five-thiophene-fused backbone has an absorption with theλ_(onset)of 927 nm,which is closer to the predicted absorption range for the best single junction cells based on the semiempirical ***,the device based on 5 T-OFIC yields a higher power conversion efficiency(PCE)of 13.43%compared with 12.35%of the 6 T-OFIC-based ***,an impressive PCE of 15.45%was achieved for the5 T-OFIC-based device when using F-2 Cl as the third component.5 T-OFIC offers one of a few acceptor cases with efficiencies over 15%other than Y6 derivatives.

关键词： organic solar cells acceptor-donor-acceptor(A-D-A) semi-empirical model non-fullerene acceptor high efficiency

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Fluorination-modulated end units for high-performance non-fullerene acceptors based organic solar cells

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Science China Materials 2019年第8期62卷 1210-1217页

作者： Yanna Sun huan-huan gao Yuan-Qiu-Qiang Yi Xiangjian Wan huanran Feng Xin Ke Yamin Zhang Jing Yan Chenxi Li Yongsheng Chen The Key Laboratory of Functional Polymer Materials State Key Laboratory and Institute of Elemento-Organic Chemistry Centre of Nanoscale Science and Technology College of Chemistry Nankai University

Organic solar cells (OSCs) have drawn great attention for their low cost, light weight, solution processability and flexibility [1-3]. Over the last decade, fullerene and their derivatives have been the dominant electron acceptors for OSCs due to their excellent electron-transport properties, but limited by their disadvantages of poor light absorption, high synthesis cost, and difficulties in property tunability.

关键词：有机太阳能电池富勒烯氟原子端基修饰体高分子轨道光谱红移

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Effects of Maillard reaction and its product AGEs on aging and age-related diseases

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Food Science and Human Wellness 2024年第3期13卷 1118-1134页

作者： huan Peng Yuqi gao Chenye Zeng Rui Hua Yannan Guo Yida Wang Zhao Wang Protein Science Key Laboratory of the Ministry of Education School of Pharmaceutical SciencesTsinghua UniversityBeijing 100084China

Maillard reaction(MR)is a non-enzymatic browning reaction commonly seen in food processing,which occurs between reducing sugars and compounds with amino *** certain advantages based on Maillard reaction products(MRPs)found in some food for health and storage application have appeared,however,the MR occurring in human physiological environment can produce advanced glycation end products(AGEs)by non-enzymatic modification of macromolecules such as proteins,lipids and nucleic acid,which could change the structure and functional activity of the molecules *** this review,we take AGEs as our main object,on the one hand,discuss physiologic aging,that is,age-dependent covalent cross-linking and modification of proteins such as collagen that occur in eyes and skin containing connective *** the other hand,pathological aging associated with autoimmune and inflammatory diseases,neurodegenerative diseases,diabetes and diabetic nephropathy,cardiovascular diseases and bone degenerative diseases have been mainly *** on the series of adverse effects of accelerated aging and disease pathologies caused by MRPs,the possible harm caused by some MR can be slowed down or inhibited by artificial drug intervention,dietary pattern and lifestyle *** also stimulates people's curiosity to continue to explore the potential link between the MR and human aging and health,which should be paid more attention to for the development of life sciences.

关键词： Maillard reaction Advanced glycation end products Physiologic aging Pathological aging Drug intervention

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Correlation of gut microorganisms and non-volatile flavor substances provides new insights for breeding Scylla paramamosain

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Journal of Oceanology and Limnology 2024年第4期42卷 1336-1347页

作者： gao gao Xing LI Kangxiang QIN Yun HU Xiaosong JIANG Chenxi CHE Yuntao LI Changkao MU Chunlin WANG huan WANG School of Marine Science Ningbo UniversityNingbo 315211China Key Laboratory of Applied Marine Biotechnology Ministry of EducationNingbo UniversityNingbo 315211China

The farming of Scylla paramamosain with specific flavors has a higher commercial value,and the flavors are related to the integrated farming environment and non-volatile flavor substances,while the survival environment is one of the important ways to source gut microorganisms in the *** this study,the levels of dominant taxa in the gut flora of *** from Mong Cai,Vietnam(VN),Taishan City,Guangdong Province(TS)of China,and Ninghai County,Ningbo City(NB)Zhejiang Province of China converged with those of *** from Sanmen County,Ningbo City(CK 1,CK 2,and CK 3)at 28 d of *** top 15 genera with the highest abundance of VN,TS,and NB gut flora were the same as CK 1,CK 2,and CK 3,but with different percentages,and gradually converged to CK 1,CK 2,and CK 3,respectively,at 28 d of *** between intestinal flora and non-volatile flavor substances in the hepatopancreas at the percentage level of relative abundance of bacterial genera found that above 28 d of domestication,Muribaculaceae,Psychrilyobacter,Clostridia_vadinBB 60_group,Halarcobacter Carboxylicivirga,Sediminispirochaeta may be the most important genera affecting flavor amino acids of ***,Carboxylicivirga,Halarcobacter,Photobacterium,ZOR 0006,Psychrilyobacter,and Pseudomonas may be the most important genera affecting flavor amino acids of ***,Carboxylicivirga,Halarcobacter,Photobacterium,ZOR 0006,Vibrio,and Sphingomonas may be the most important genera affecting flavor amino acids of *** results show that the intestinal flora structure of crabs from different areas were domesticated in the same area for at least 28 d before they converged to that of the domesticated crab,and the most important genera affecting the flavor amino acids of TS,VN,and NB were also *** results of this study provide a reference and basis for the technique of directional cultivation of the flavor quality of the crab.

关键词： survival environment Scylla paramamosain intestinal flora structure non-volatile flavor substance directional breeding

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Synthesis,structure,and thermal expansion in CaZrF_(6) with two polymorphs

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Nano Research 2024年第9期17卷 8618-8626页

作者： Peixian Zhang Yongqiang Qiao Kaiyue Zhao Qingjie Wang huan Zhao Juan Guo Erjun Liang Tao Sun Jiangwei Zhang Qilong gao Key Laboratory of Materials Physics of Ministry of Education School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450052China College of Energy Materials and Chemistry Inner Mongolia UniversityHohhot 010021China First Affiliated Hospital of Dalian Medical University 222 Zhongshan RoadDalian 116011China Ordos Laboratory Ordos 017000China

Due to the high structural flexibility and controllable thermal expansion,cubic double ReO_(3)-type negative thermal expansion(NTE)fluorides provide a solution for solving the prominent phenomenon of thermal expansion mismatch between ***,the expensive raw materials and complex synthesis steps limit its practical *** this work,we have designed a more advantageous method for the synthesis of NTE material CaZrF_(6),and it is expected to be generalized to the synthesis of other double ReO_(3)-***,a new orthorhombic phase CaZrF_(6) has been synthesized via this method in a lower *** the strong isotropic NTE of the cubic phase CaZrF_(6),the orthorhombic phase shows the strong anisotropic positive thermal expansion(PTE).The combined analysis of temperature-dependent X-ray diffraction(XRD),Raman spectra,and first-principles calculations shows that the low frequency phonon vibration mode with negative Grüneisen parameter in cubic CaZrF_(6) are strongly correlated with the transverse thermal vibration of F atoms and dominates the NTE of the material.

关键词： negative thermal expansion fluorides polymorph lattice dynamics first principles calculations

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