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| 1 | Effects of hypoxia on survival,behavior,and metabolism of Zhikong scallop Chlamys farreri Jones et Preston 1904显示文摘Hypoxia,a frequent occurring threat in coastal regions,often results in mass mortalities of marine organisms and brings a serious ecological problem.The commercially important Zhikong scallop Chlamys farreri is being under such a threat as the risks of eutrophication and hypoxia have risen in their culture areas.However,little information has been known concerning their tolerance to hypoxia and their strategy for survival.In the present study,a 20-day experiment was conducted to determine the ef fects of hypoxia on the survival,behavior,and metabolism of Zhikong scallop.With the LC_(50)for dissolved oxygen(DO)being estimated as 1.8 mg/L,the survival of Zhikong scallop can be greatly challenged even under the moderate hypoxic condition of around 2.0 mg/L DO.The survival rate ranged from 69%to 59%when DO dropped from 3.0 to 2.0 mg/L,and it was further reduced to 47%at 1.5 mg/L DO.In hypoxic conditions,the scallops became significantly active,which may be explained as escape attempts to avoid hypoxic water.To save energy,Zhikong scallop would depress their respiration.However,when DO dropped from 3.0 to 2.0 mg/L,the oxygen consumption rate hardly changed.The upregulation of lactate dehydrogenase activity and the unrepressed phosphofructokinase activity,which often result in the unbalanced cellular homeostasis and energy budget,may account for the observed increase in the mortality rate of Zhikong scallops.In general,Zhikong scallop is sensitive to hypoxia events,though possible escape attempts,depressed respiration,and oxaloacetate-pathway may increase their survival chance. | LI Qiao ZHANG Fang WANG Minxiao LI Mengna SUN Song | 2020 | Journal of Oceanology and Limnology2020，38，2： | 5 |
| 2 | Hierarchically porous carbon derived from natural Porphyra for excellent electromagnetic wave absorption显示文摘A highly efficient absorber with features including lightweight, broad bandwidth, and tunable electromagnetic property still remains challenging for practical applications. Herein, the Porphyra-derived porous carbon(PPC) was fabricated via facile procedures of low-temperature pre-carbonization combined with KOH chemical activation. The composition, microstructure, and electromagnetic wave absorption properties of the samples were elucidated based on X-ray diffraction(XRD), Raman, X-ray photoelectron spectroscopy(XPS), scanning electron microscopy(SEM), transmission electron microscopy(TEM),Brunauer-Emmer-Teller(BET), and vector network analyzer(VNA). The porosity of PPC can be readily regulated by adjusting activation temperature. The PPC obtained at 750 ℃ was composed of a threedimensional hierarchically porous carbon network. The C and N elements of natural Porphyra were introduced into the carbon skeleton during the carbonization process. The large specific surface, dopants, and three-dimensional hierarchically porous carbon network can effectively improve the impedance matching and dielectric dissipation, leading to an excellent electromagnetic wave absorption performance. Especially, the optimal reflection loss(RL) value reached –57.75 d B at 9.68 GHz with a broad bandwidth(RL< –10 d B) value of 7.60 GHz at 3.5 mm. Overall, the results indicate that the PPC can provide a new way to achieve lightweight, effective, and sustainable absorbers. | Juhua Luo Ziyang Dai Mengna Feng Xiaowen Chen Caihong Sun Ying Xu | 2022 | Journal of Materials Science & Technology2022，，34： | 4 |
| 3 | Revisiting the Concentration Observations and Source Apportionment of Atmospheric Ammonia显示文摘While China’s Air Pollution Prevention and Control Action Plan on particulate matter since 2013 has reduced sulfate significantly,aerosol ammonium nitrate remains high in East China.As the high nitrate abundances are strongly linked with ammonia,reducing ammonia emissions is becoming increasingly important to improve the air quality of China.Although satellite data provide evidence of substantial increases in atmospheric ammonia concentrations over major agricultural regions,long-term surface observation of ammonia concentrations are sparse.In addition,there is still no consensus on whether agricultural or non-agricultural emissions dominate the urban ammonia budget.Identifying the ammonia source by nitrogen isotope helps in designing a mitigation strategy for policymakers,but existing methods have not been well validated.Revisiting the concentration measurements and identifying source apportionment of atmospheric ammonia is thus an essential step towards reducing ammonia emissions. | Yuepeng PAN Mengna GU Yuexin HE Dianming WU Chunyan LIU Linlin SONG Shili TIAN Xuemei LÜ Yang SUN Tao SONG Wendell WWALTERS Xuejun LIU Nicholas AMARTIN Qianqian ZHANG Yunting FANG Valerio FERRACCI Yuesi WANG | 2020 | Advances in Atmospheric Sciences2020，37，9： | 4 |
| 4 | Unveiling the Effects of Interchain Hydrogen Bonds on Solution Gelation and Mechanical Properties of Diarylfluorene-Based Semiconductor Polymers显示文摘The intrinsically rigid and limited strain of most conjugated polymers has encouraged us to optimize the extensible properties of conjugated polymers.Herein,learning from the hydrogen bonds in glucose,which were facilitated to the toughness enhancement of cellulose,we introduced interchain hydrogen bonds to polydiarylfluorene by amide-containing side chains.Through tuning the copolymerization ratio,we systematically investigated their influence on the hierarchical condensed structures,rheology behavior,tensile performances,and optoelectronic properties of conjugated polymers.Compared to the reference copolymers with a low ratio of amide units,copolymers with 30%and 40%amide units present a feature of the shearthinning process that resembled the non-Newtonian fluid,which was enabled by the interchain dynamic hydrogen bonds.Besides,we developed a practical and universal method for measuring the intrinsic mechanical properties of conjugated polymers.We demonstrated the significant impact of hydrogen bonds in solution gelation,material crystallization,and thin film stretchability.Impressively,the breaking elongation for P4 was even up to~30%,which confirmed the partially enhanced film ductility and toughness due to the increased amide groups.Furthermore,polymer light-emitting devices(PLEDs)based on these copolymers presented comparable performances and stable electroluminescence(EL).Thin films of these copolymers also exhibited random laser emission with the threshold as low as 0.52μJ/cm^(2),suggesting the wide prospective application in the field of flexible optoelectronic devices. | Lubing Bai Yamin Han Chen Sun Xiang An Chuanxin Wei Wei Liu Man Xu Lili Sun Ning Sun Mengna Yu He Zhang Qi Wei Chunxiang Xu Yingguo Yang Tianshi Qin Linghai Xie Jinyi Lin Wei Huang | 2020 | Research2020，，1： | 2 |
| 5 | Alkyl-chain branched effect on the aggregation and photophysical behavior of polydiarylfluorenes toward stable deep-blue electroluminescence and efficient amplified spontaneous emission显示文摘The control of the condensed superstructure of light-emitting conjugated polymers(LCPs)is a crucial factor to obtain high performance and stable organic optoelectronic devices.Side-chain engineering strategy is an effective platform to tune inter chain aggregation and photophysical behaviour of LCPs.Herein,we systematically investigated the alkyl-chain branched effecton the conformational transition and photophysical behaviour of polydiarylfluorenes toward efficient blue optoelectronic devices.The branched side chain will improve materials solubility to inhibit interchain aggregation in solution according to DLS and optical analysis,which is useful to obtain high quality film.Therefore,our branched PEODPF,POYDPF pristine film present high luminance efficiency of 36.1%and 39.6%,enhanced about 20%relative to that of PODPF.Compared to the liner-type sides'chain,these branched chains also suppress chain planarization and improve film morphological stability effectively.Interestingly,the branched polymer also had excellent stable amplified spontaneous emission(ASE)behaviour with low threshold(4.72μJ/cm2)and a center peak of 465 nm,even thermal annealing at 220℃in the air atmosphere.Therefore,side-chain branched strategy for LCPs is an effective means to control interchain aggregation,film morphology and photophysical property of LCPs. | Lili Sun Ning Sun Lubing Bai Xiang An Bin Liu Chen Sun Lixiang Fan Chuanxin Wei Yamin Han Mengna Yu Jinyi Lin Dan Lu Ning Wang Linghai Xie Kang Shen Xinwen Zhang Yanan Xu Juan Cabanillas-Gonzalez Wei Huang | 2019 | Chinese Chemical Letters2019，30，11： | 1 |
| 6 | Titanylphthalocyanine as hole transporting material for perovskite solar cells显示文摘Titanylphthalocyanine(TiOPc) as hole transporting material(HTM) was successfully synthesized by a simple process with low cost. Perovskite solar cells using the TiOPc as HTM were fabricated and characterized. TiOPc as HTM plays an important role in increasing the power conversion efficiency(PCE) by minimizing recombination losses at the perovskite/Au interface because TiOPc as HTM can extract photogenerated holes from the perovskite and then transport quickly these charges to the back metal electrode. In the research, the β-TiOPc gives a higher PCE than α-TiOPc for the devices due to sufficient transfer dynamics. The β-TiOPc was applied in perovskite solar cells without dopping to afford an impressive PCE of 5.05% under AM 1.5G illumination at the thickness of 40 nm which is competitive with spiro-OMe TAD at the same condition. The present work suggests a guideline for optimizing the photovoltaic properties of perovskite solar cells using the TiOPc as the HTM. | Mengna Sun Shirong Wang Yin Xiao Zhihao Song Xianggao Li | 2015 | Journal of Energy Chemistry2015，24，6： | 0 |
| 7 | Highly efficient quantum dot light-emitting diodes with the utilization of an organic emission layer显示文摘The relative balance of electron and hole injection is crucial for the achievement of highly efficient quantum dot(QD)lightemitting diodes(QLEDs).Here,an inverted red QLED with the utilization of an organic emitting layer(EML)was obtained,exhibiting peak current efficiency(CE)and external quantum efficiency(EQE)of 25.63 cd/A and 23.20%,respectively.In the proposed device,the organic EML,which is a blend of fac-tris(2-phenylpyridine)iridium(Ir(ppy)_(3))and 4,4’-bis(N-carbazolyl)-1,1’-biphenyl(CBP),works as an exciton harvester to capture the leaked electrons from QD layer and the injected holes from hole transporting layer(HTL),then affording energy transfer from organic EML to the adjacent QD layer so that the emission of QD is enhanced significantly.At the same time,according to the results of hole-only and electron-only devices,the insertion of organic EML promotes the hole injection,and eliminates excess electrons from QD to HTL,thus leading to a better match of hole and electron injection in the device.On the basis of the above benefits,the optimal QLED with a 10 nm organic EML offered~2-fold improvements of CE and EQE,respectively,relative to the control device.Furthermore,a better operational lifetime of QLEDs based on the organic EML was achieved. | Yang Li Dejiang Zhao Wei Huang Zhiqiang Jiao Lu Wang Qingyu Huang Peng Wang Mengna Sun Guangcai Yuan | 2023 | Nano Research2023，16，7： | 0 |
| 8 | Application of phenonaphthazine derivatives as hole-transporting materials for perovskite solar cells显示文摘Two electron-rich,solution-processable phenonaphthazine derivatives,5,12-bis{N-[4,4'-bis-(phenyl)-aminophen-4''-yl]}-phenonaphthazine(BPZTPA) and 5,12-bis{N-[4,4'-bis(methoxy-phenyl)aminophen-4''-yl]}-phenonaphthazine(Me O-BPZTPA) have been designed and employed in the fabrication of perovskite solar cells.BPZTPA and Me O-BPZTPA exhibit excellent thermal stabilities,hole mobilities(~10-4cm^2/(V.s)) and suitable HOMO levels(-5.34 and-5.29 e V,respectively) relative to the valence band of the CH_3NH_3 Pb I_3 and Au work function,showing their potential as alternative hole-transporting materials(HTMs).Meanwhile,the corresponding mesoporous Ti O_2/CH_3NH_3 Pb I_3/HTM/Au devices are investigated,and the best power conversion efficiency of 10.36% has been achieved for Me O-BPZTPA without using p-type dopant. | Xueyuan Liu Fei Zhang Xicheng Liu Mengna Sun Shirong Wang Dongmei Li Qingbo Meng Xianggao Li | 2016 | Journal of Energy Chemistry2016，25，4： | 0 |
| 9 | Synergetic lethal energy depletion initiated by cancer cell membrane camouflaged nano-inhibitor for cancer therapy显示文摘Mitochondrial bioenergy plays a vital role in the occurrence and development of cancer.Although strategies to impede mitochondrial energy supply have been rapidly developed,the anticancer efficacy is still far from satisfactory,mainly attributed to the hybrid metabolic pathways of mitochondrial oxidative phosphorylation(OXPHOS)and glycolysis.Herein,we construct a cancer cell membrane camouflaged nano-inhibitor,mTPPa-Sy nanoparticle(NP),which co-encapsulates OXPHOS inhibitor(mitochondrial-targeting photosensitizers:TPPa)and glycolysis inhibitor(syrosingopine(Sy))for synergistically blocking the two different energy pathways.The mTPPa-Sy NPs exhibit precision tumor-targeting due to the high affinity between the biomimic membrane and the homotypic cancer cells.Under laser irradiation,the mitochondrial-targeting TPPa,which is synthesized by conjugating pyropheophorbide a(PPa)with triphenylphosphin,produces excessive reactive oxygen species(ROS)and further disrupts the OXPHOS.Interestingly,OXPHOS inhibition reduces O_(2) consumption and improves ROS production,further constructing a closed-loop OXPHOS inhibition system.Moreover,TPPa-initiated OXPHOS inhibition in combination with the Sytriggered glycolysis inhibition results in lethal energy depletion,significantly suppressing tumor growth even after a single treatment.Our findings highlight the necessity and effectiveness of synergetic lethal energy depletion,providing a prospective strategy for efficient cancer therapy. | Fudan Dong Qikun Jiang Lingxiao Li Tian Liu Shiyi Zuo Lin Gao Mengna Fang Yanlin Gao Bingjun Sun Cong Luo Zhonggui He Jin Sun | 2022 | Nano Research2022，15，4： | 0 |
| 10 | Intrinsically Viscoelastic Supramolecular Conjugated Polymer toward Suppressing Coffee-Ring Effect显示文摘The rational molecular design of light-emitting conjugated polymers that inherently suppress the ubiquitous coffee-ring effect(CRE)is a great challenge and the critical bottleneck for printing displays.Herein,we describe a supramolecular route to construct an intrinsically viscoelastic rigid conjugated polymer(RCP)(PHDPF-Cz)toward avoiding the CRE without sacrificing optoelectronic properties.Theπ-πstacking interactions derived fromthe pendant carbazole(Cz)units enable PHDPF-Cz to self-assemble into criss-cross nanofibers and endow its solutionwith great viscosity.Consequently,a high-quality and continuous PHDPFCz film was obtained by impeding the transport of aggregates to the droplet edge due to outward capillary flow during evaporation,in sharp contrast to the random aggregate migration and rapid precipitation generated fromthe controlled poly[4-(6-(9H-diphenylaniline-9-yl)hexyloxy)-9,9-diphenylfluorene]-co-[5-(6-(9H-diphenylaniline-9-yl)hexyloxy)-9,9-diphenylfluorene]and poly(9,9-dioctylfluorene)solutions.Finally,an efficient random laser is also achieved based on these cross-linked films with ultrastable single-chain excitonic behavior,confirming the effectiveness of our design strategy. | Yamin Han Lubing Bai Xiang An Man Xu Chuanxin Wei Zongqiong Lin Mengna Yu Jinyi Lin Lili Sun Ning Sun Changting Wei Linghai Xie Xuehua Ding Qi Wei Chengrong Yin Chenghui Li Wenming Su Wei Huang | 2022 | CCS Chemistry2022，4，11： | 0 |
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