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| 1 | Whole-Genome Sequencing and Analysis of the Chinese Herbal Plant Panax notoginseng显示文摘 | Wei Chen Ling Kui Guanghui Zhang Shusheng Zhu Jing Zhang Xiao Wang Min Yang Huichuan Huang Yixiang Liu Yong Wang Yahe Li Lipin Zeng Wen Wang Xiahong He Yang Dong Shengchao Yang | 2017 | Molecular Plant2017，10，6： | 21 |
| 2 | A Review on Graphene-Based Gas/Vapor Sensors with Unique Properties and Potential Applications显示文摘Graphene-based gas/vapor sensors have attracted much attention in recent years due to their variety of structures, unique sensing performances, room-temperature working conditions, and tremendous application prospects, etc.Herein, we summarize recent advantages in graphene preparation, sensor construction, and sensing properties of various graphene-based gas/vapor sensors, such as NH_3, NO_2, H_2, CO, SO_2, H_2S, as well as vapor of volatile organic compounds.The detection mechanisms pertaining to various gases are also discussed. In conclusion part, some existing problems which may hinder the sensor applications are presented. Several possible methods to solve these problems are proposed, for example, conceived solutions, hybrid nanostructures, multiple sensor arrays, and new recognition algorithm. | Tao Wang Da Huang Zhi Yang Shusheng Xu Guili He Xiaolin Li Nantao Hu Guilin Yin Dannong He Liying Zhang | 2016 | Nano-Micro Letters2016，8，2： | 18 |
| 3 | Fluid Inclusion and H-O Isotope Geochemistry of the Phapon Gold Deposit, NW Laos: Implications for Fluid Source and Ore Genesis显示文摘The Phapon gold deposit, located in northern Laos, is a unique large-scale gold deposit in Luang Prabang-Loei metallogenic belt. It is hosted in the Lower Permian limestone and controlled by a NE-trending ductile-brittle fault system. There are three types of primary ore including auriferous calcite vein type, disseminated type, and breccia type, and the first two are important in the Phapon gold deposit. Based on fluid inclusion petrography and microthermometry, three types of primary fluid inclusions including type 1 liquid-rich aqueous, type 2 vapor-rich aqueous and type 3 daughter mineralbearing aqueous were identified in hydrothermal calcite grains. The ore-forming fluids are normally homogeneous, as indicated by the widespread type 1 inclusions with identical composition. The coexistence of type 1 and type 2 inclusions, showing similar final homogenization temperature but different compositions, indicate that fluid immiscibility did locally take place in both two types of ores. The results of microthermometry and H-O isotopes geochemistry indicate that there are little differences on ore-fluid geochemistry between the auriferous calcite vein-type and disseminated type ores. The oreforming fluids are characterized by medium-low temperatures(157–268 oC) and low salinity(1.6 wt.%–9.9 wt.% NaCl eq.). It is likely to have a metamorphic-dominant mixed source, which could be associated with dehydration and decarbonisation of Lower Permian limestone and Middle–Upper Triassic sandstones during the dynamic metamorphism. The fluid-wallrock interaction played a major role, and the locally occurred fluid-immiscible processes played a subordinate role in gold precipitation. Combined with the regional and ore deposit geology, and ore-fluid geochemistry, we suggest that the Phapon gold deposit is best considered to be a member of the epizonal orogenic deposit class. | Linnan Guo Shusheng Liu Lin Hou Jieting Wang Meifeng Shi Qiming Zhang Fei Nie Yongfei Yang Zhimin Peng | 2019 | Journal of Earth Science2019，30，1： | 11 |
| 4 | Time-varying fault-tolerant formation tracking based cooperative control and guidance for multiple cruise missile systems under actuator failures and directed topologies显示文摘This paper studies time-varying fault-tolerant formation tracking problems for the multiple cruise missile system under directed topologies subjected to actuator failures. Firstly, the timevarying fault-tolerant formation tracking process for the multiple cruise missile system is divided into the guidance loop and the control loop. Then protocols are constructed to accomplish distributed fault-tolerant formation tracking in the guidance loop with the adaptive updating mechanism, in the condition where neither the knowledge about actuator malfunctions nor any global information of the communication topology remains available. Moreover, sufficient conditions to accomplish formation tracking are presented, and it is shown that the multiple cruise missile system can carry on the predefined time-varying fault-tolerant control (FTC) formation tracking through the active disturbances rejection controller (ADRC) and the proportion integration (PI) controller by the way of the fault-tolerant protocol utilizing the designed strategies, in the event of actuator failures. At last, numerical analysis and simulation are designed to verify the theoretical results. | XU Xingguang WEI Zhenyan REN Zhang LI Shusheng | 2019 | Journal of Systems Engineering and Electronics2019，30，3： | 8 |
| 5 | Atomic Fe-Zn dual-metal sites for high-efficiency pH-universal oxygen reduction catalysis显示文摘An effective electrocatalyst being highly active in all pH range for oxygen reduction reaction(ORR)is crucial for energy conversion and storage devices.However,most of the high-efficiency ORR catalysis was reported in alkaline conditions.Herein,we demonstrated the preparation of atomically dispersed Fe-Zn pairs anchored on porous N-doped carbon frameworks(Fe-Zn-SA/NC),which works efficiently as ORR catalyst in the whole pH range.It achieves high half-wave potentials of 0.78,0.85 and 0.72 V in 0.1 M HClO4,0.1 M KOH and 0.1 M phosphate buffer saline(PBS)solutions,respectively,as well as respectable stability.The performances are even comparable to Pt/C.Furthermore,when assembled into a Zn-air battery,the high power density of 167.2 mWcm−2 and 120 h durability reveal the feasibility of Fe-Zn-SA/NC in real energy-related devices.Theoretical calculations demonstrate that the superior catalytic activity of Fe-Zn-SA/NC can be contributed to the lower energy barriers of ORR at the Fe-Zn-N6 centers.This work demonstrates the potential of Fe-Zn pairs as alternatives to the Pt catalysts for efficient catalytic ORR and provides new insights of dual-atom catalysts for other energy conversion related catalytic reactions. | Jie Xu Shuhua Lai Defeng Qi Min Hu Xianyun Peng Yifan Liu Wei Liu Guangzhi Hu Heng Xu Fan Li Chao Li Jia He Longchao Zhuo Jiaqiang Sun Yuan Qiu Shusheng Zhang Jun Luo Xijun Liu | 2021 | Nano Research2021，14，5： | 6 |
| 6 | De novo assembly of chloroplast genomes of Corchorus capsularis and C.olitorius yields species-specific InDel markers显示文摘Jute(Corchorus spp.)is a member of the Malvaceae family,which comprises more than 100 species.The systematic positions of jute species have remained unsettled.Chloroplasts are maternally inherited and their genomes are widely used for plant phylogenetic studies.In the present study,the chloroplast genomes of Corchorus capsularis and C.olitorius were assembled,with sizes of respectively 161,088 and 161,766 bp.Both genomes contained 112 unique genes(78 protein-coding,four rRNA,and 30 tRNA genes).Four regionswith high variation between the two species were located in single-copy rather than inverted-repeat regions.A total of 66 simple sequence repeats(SSRs)were identified in the C.capsularis chloroplast genome and 56 in that of C.olitorius.Comparison of the two chloroplast genome sequences permitted the evaluation of nucleotide variation including 2417 single-nucleotide polymorphisms sites and 294 insertion or deletion sites,of which one marker(cpInDel 205)could discriminate the two jute species.Comparison of the C.capsularis and C.olitorius chloroplast genomeswith those of other species in theMalvaceae revealed breakpoints in the accD locus,which is involved in fatty acid synthesis,in C.capsularis and C.olitorius.This finding suggests that genes from the chloroplast genomemight have been transferred to the nuclear genome in some Corchorus species.This hypothesis was supported by synteny analysis of the accD region among the nuclear,chloroplast,and mitochondrial genomes.To our knowledge,this is the first report of the assembled chloroplast genome sequences of C.capsularis and C.olitorius.C.capsularis and C.olitorius are closely related to Gossypium species and there are abundant microstructure variations between these two genera.These results will expand our understanding of the systematics of species in the Malvaceae. | Shusheng Fang Liemei Zhang Jianmin Qi Liwu Zhang | 2021 | The Crop Journal2021，9，1： | 5 |
| 7 | Mid-Cretaceous Hothouse Climate and the Expansion of Early Angiosperms显示文摘The remarkable transition of early angiosperms from a small to a dominant group characterized the terrestrial ecosystem of the Cretaceous. This transition was instigated and promoted by environmental changes. Mid-Cretaceous is characterized by major geological events that affected the global environment. δ^(18)O, palaeothermometer TEX86, and other climatic indices from marine sediments suggest rapid temperature increase during mid-Cretaceous despite occasional short cooling events. Simultaneously, terrestrial deposits in East Asia changed from coal-bearing to shale, then to red beds and evaporites. Plant assemblages and other paleoclimate indicators point to rapid aridification for midCretaceous terrestrial environments. In addition, the wildfires were frequently spread all over the earth by the numerous charcoal evidence during the Mid-Cretaceous. Thus, we speculate that the seasonally dry and hot conditions of mid-Cretaceous created a fiery hothouse world. Early angiosperms increased in abundance and diversity and evolved from a few aquatic species to terrestrial herbaceous and then to the diversified flora of today. Angiosperms showed rapid physiological evolution in vein density and leaf area that improved photosynthesis and water absorption. These ecophysiological changes made early angiosperms well adapted to the hot and dry environment in mid-Cretaceous. Moreover, these physiological changes facilitated the fire–angiosperm cycles in mid-Cretaceous that likely further stimulated the early angiosperm evolution. | ZHANG Mingzhen DAI Shuang DU Baoxia JI Liming HU Shusheng | 2018 | Acta Geologica Sinica(English Edition)2018，92，5： | 4 |
| 8 | A matching algorithm between precursory 3D process model and 2D working procedure drawing based on subgraph isomorphism显示文摘To meet the urgent requirement of enterprises for three-dimensional (3D) process models, an approach based on subgraph isomorphism is proposed to solve the matching problem between precursory 3D process model and 2D working procedure drawings. First, the projection drawings of the precursory 3D process model are obtained, then the primitives are extracted and the attributed adjacency graph (AAG) is constructed. Finally, by taking the 2D working procedure drawing as the AAG, and the projection drawing as the whole AAG, the matching problem between precursory 3D process model and 2D working procedure drawings is translated into the problem of subgraph isomorphism. To raise the matching efficiency, the AAG is partitioned, and the vertexes of the graph are classified effectively using the vertex’s attributes. Experimental results show that this method is able to support exact match and the matching efficiency can meet the requirement of practical applications. | HUANG Rui ZHANG ShuSheng FAN HaiTao TAO Jun | 2011 | Science China(Technological Sciences)2011，54，7： | 4 |
| 9 | INTERFERENCE BY NON-HOST PLANT ROOTS AND ROOT EXUDATES IN THE INFECTION PROCESSES OF PHYTOPHTHORA NICOTIANAE显示文摘Crop rotations are widely used because they can significantly reduce the incidence of pests and diseases.The interactions between non-host roots and pathogens may be key in the inhibition of soilborne pathogens in crop rotations.Interactions between fennel(Foeniculum vulgare)roots/root exudates and Phytophthora nicotianae were investigated because of the known allelopathy between fennel and tobacco(Nicotiana tabacum).The effects of the key compounds in the fennel rhizosphere on the mycelial growth and zoospore behavior of P.nicotianae were assessed.The roots of fennel attracted P.nicotianae zoospores and inhibited their motility and the germination of cystospores,with some cystospores rupturing.4-ethylacetophenone,vanillin and N-formylpiperidine were consistently identified in the fennel rhizosphere and were found to interfere with the infection of P.nicotianae,especially vanillin.Hyphae treated with these compounds produced more abnormal branches and accumulated reactive oxygen species.These interspecific interactions between non-host roots and pathogens were found to be an important factor in the inhibition by fennel of infection by P.nicotianae. | Yuxin YANG He ZHANG Yuting FANG Ying LI Xinyue MEI Huichuan HUANG Fei DU Shusheng ZHU Min YANG Yixiang LIU | 2021 | Frontiers of Agricultural Science and Engineering2021，8，3： | 3 |
| 10 | Tenofovir vs.entecavir on recurrence of hepatitis B virus-related hepatocellular carcinoma beyond Milan criteria after hepatectomy显示文摘Background:Hepatectomy for hepatocellular carcinoma(HCC)beyond the Milan criteria is shown to be beneficial.However,a high rate of post-operative HCC recurrence hinders the long-term survival of the patients.This study aimed to investigate and compare the impacts of tenofovir(TDF)and entecavir(ETV)on the recurrence of hepatitis B viral(HBV)-related HCC beyond the Milan criteria.Methods:Data pertaining to 1532 patients who underwent hepatectomy and received antiviral therapy between January 2014 and January 2019 were collected from five centers.Recurrence-free survival(RFS)analysis was performed using the Kaplan-Meier method.Cox proportional hazards regression analysis was performed to determine prognostic factors for HCC recurrence.Results:The analysis incorporates 595 HBV-related HCC patients.The overall 5-year RFS was 21.3%.Among them,533 and 62 patients received ETV and TDF treatment,respectively.The 1-,3-,and 5-year RFS rates were 46.3%,27.4%,and 19.6%,respectively,in the ETV group compared with 65.1%,41.8%,and 37.2%,respectively,in the TDF group(P<0.001).Multivariate analysis showed that TDF treatment(hazard ratio[HR]:0.604,P=0.005),cirrhosis(HR:1.557,P=0.004),tumor size(HR:1.037,P=0.008),microvascular invasion(MVI)(HR:1.403,P=0.002),portal vein tumor thrombus(PVTT)(HR:1.358,P=0.012),capsular invasion(HR:1.228,P=0.040),and creatinine levels(CREA)(HR:0.993,P=0.031)were statistically significant prognostic factors associated with RFS.Conclusions:Patients with HCC beyond the Milan criteria exhibited a high rate of HCC recurrence after hepatectomy.Compared to the ETV therapy,TDF administration significantly lowered the risk of HCC recurrence. | Junyi Shen Weili Qi Junlong Dai Shusheng Leng Kangyi Jiang Yu Zhang Shun Ran Chuan Li Tianfu Wen | 2022 | Chinese Medical Journal2022，，3： | 3 |
| 11 | MoC nanocrystals confined in N-doped carbon nanosheets toward highly selective electrocatalytic nitric oxide reduction to ammonia显示文摘Electrochemical nitric oxide reduction reaction(NORR)to produce ammonia(NH3)under ambient conditions is a promising alternative to the energy and carbon-intensive Haber–Bosch approach,but its performance is still improved.Herein,molybdenum carbides(MoC)nanocrystals confined by nitrogen-doped carbon nanosheets are first designed as an efficient and durable electrocatalyst for catalyzing the reduction of NO to NH3 with maximal Faradaic efficiency of 89%±2%and a yield rate of 1,350±15μg·h^(−1)·cm^(−2) at the applied potential of−0.8 V vs.reversible hydrogen electrode(RHE)as well as high stable activity with negligible current density and NH3 yield rate decays over a 30 h continue the test.Moreover,as a proof-of-concept of Zn–NO battery,it achieves a peak power density of 1.8 mW·cm^(−2) and a large NH3 yield rate of 782±10μg·h^(−1)·cm^(−2),which are comparable to the best-reported results.Theoretical calculations reveal that the MoC(111)has a strong electronic interaction with NO molecules and thus lowering the energy barrier of the potential-determining step and suppressing hydrogen evolution kinetics.This work suggests that Mo-based materials are a powerful platform providing great opportunities to explore highly selective and active catalysts for NH3 production. | Ge Meng Mengmeng Jin Tianran Wei Qian Liu Shusheng Zhang Xianyun Peng Jun Luo Xijun Liu | 2022 | Nano Research2022，15，10： | 3 |
| 12 | Effect of anterior tympanomeatal angle blunting on the middle ear transfer function using a finite element ear model显示文摘 | Jie Wang Fei Zhao Yongxin Li Demin Han Shusheng Gong Shouqin Zhao Hua Zhang | 2011 | Medical Engineering and Physics2011，，9： | 3 |
| 13 | Geology, Geochronology, and Hf Isotopic Composition of the Pha Lek Fe Deposit, Northern Laos: Implications for Early Permian Subduction-Related Skarn Fe Mineralization in the Truong Son Belt显示文摘The Truong Son metallogenic belt in central Laos and Vietnam is an important Fe-Cu-Sn-Au polymetallic ore district. The Pha Lek Fe deposit is closely related to Late Carboniferous– Early Permian I-type granitic magmatism, and contains >50 Mt @ 45% to 50% of Fe ore. Ore minerals occur mainly as magnetite and hematite in the skarn alteration zone between a granitic pluton and metamorphosed Middle–Upper Devonian carbonates. The granitic pluton comprises granodiorite and granite, with zircon U-Pb dating indicating synchronous emplacement at 288.2±1.3 and 284.9±1.2 Ma, respectively. Zircons from these granitoids have ε_(Hf)(t) values of 2.9–11.2 and relatively young TDM2 ages(<1.0 Ga), indicating an origin by partial melting of depleted mafic crust or magma mixing. Previous studies have shown that these granitoids have high Y, Yb, and K_2O contents, and low Sr and Na_2O contents, which are interpreted as the melting of mafic continental crust. Pyrite of the main mineralization stage yields an ^(187)Re/^(188)Os-^(187)Os/^(188)Os isochron age of 287±17 Ma, indicating that mineralization is associated with Pha Lek granitic magmatism. A Late Carboniferous–Early Permian subduction-related skarn-type Fe mineralization model is proposed for the Pha Lek deposit. More evidence is needed to verify a hypothesis of volcanic overprinting during Late Triassic post-collisional extension. | Lin Hou Shusheng Liu Linnan Guo Fuhao Xiong Chao Li Meifeng Shi Qiming Zhang Siwei Xu Songyang Wu | 2019 | Journal of Earth Science2019，30，1： | 2 |
| 14 | High-efficiency electrocatalytic NO reduction to NH_(3) by nanoporous VN显示文摘Electrocatalytic NO reduction reaction to generate NH_(3)under ambient conditions offers an attractive alternative to the energy-extensive Haber-Bosch route;however,the challenge still lies in the development of cost-effective and high-performance electrocatalysts.Herein,nanoporous VN film is first designed as a highly selective and stable electrocatalyst for catalyzing reduction of NO to NH_(3)with a maximal Faradaic efficiency of 85%and a peak yield rate of 1.05×10^(-7)mol·cm^(-2)·s^(-1)(corresponding to 5,140.8mg·h^(-1)·mg_(cat).^(-1))at-0.6 V vs.reversible hydrogen electrode in acid medium.Meanwhile,this catalyst maintains an excellent activity with negligible current density and NH_(3)yield rate decays over 40 h.Moreover,as a proof-of-concept of Zn-NO battery,it delivers a high power density of 2.0 mW·cm^(-2)and a large NH_(3)yield rate of 0.22×10^(-7)mol·cm^(-2)·s^(-1)(corresponding to 1,077.1mg·h^(-1)·mg_(cat).^(-1)),both of which are comparable to the best-reported results.Theoretical analyses confirm that the VN surface favors the activation and hydrogenation of NO by suppressing the hydrogen evolution.This work highlights that the electrochemical NO reduction is an eco-friendly and energy-efficient strategy to produce NH_(3). | Defeng Qi Fang Lv Tianran Wei Mengmeng Jin Ge Meng Shusheng Zhang Qian Liu Wenxian Liu Dui Ma Mohamed SHamdy Jun Luo Xijun Liu | 2022 | Nano Research Energy2022，1，2： | 2 |
| 15 | New bienzymatic strategy for glucose determination by immobilized-gold nanoparticle-enhanced chemiluminescence显示文摘Bienzymatic biosensor for the determination of glucose by flow injection chemiluminescence(CL) de-tection was proposed.Hybrids of gold nanoparticles(GNPs) and chitosan were chosen as the immobi-lization matrix of glucose oxidase(GOD) and horseradish peroxidase(HRP) to fabricate the biosensors with silane-pretreated glass microbeads.After the enzyme catalyzing oxidation of glucose in GOD biosensor,the produced H2O2 flowed into HRP biosensor to react with luminol.The doped GNPs in chitosan were found to enhance the classical CL reaction of luminol-H2O2-HRP.The CL enhancement was investigated in detail by CL and UV-visible spectrum.Under the optimized experimental conditions,glucose could be determined in a linear range from 0.01 to 6.0 mmol/L with a detection limit of 5.0 μmol/L at 3σ.The accuracy of the proposed method was examined by detecting the glucose level in four clinical serum samples from hospital.The proposed method provides a new alternative to deter-mine glucose. | LIN JieHua ZHANG Hui ZHANG ShuSheng | 2009 | Science China Chemistry2009，52，2： | 2 |
| 16 | The number of births in China in 2015: policy meets superstition显示文摘Fertility in China was long constrained by the One-Child policy enacted in 1978. Over time the policy was progressively relaxed,first in rural areas and then for couples who both had no siblings.A Selective Two-Child policy which started in January-June 2014allowed a second child for couples for whom one spouse was an only child. Now with the Universal Two-Child policy, as of | Hong-Tian Li Susan Hellerstein Chuyun Kang Leonardo Trasande Yanqiu Gao Yali Zhang Shusheng Luo Yu-Bo Zhou Jie Qiao Jan Blustein Jian-Meng Liu | 2018 | Science Bulletin2018，63，19： | 2 |
| 17 | Reduced Thiol Compounds-Induced Biosensing,Bioimaging Analysis and Targeted Delivery显示文摘Reduced thiol compounds(RTCs),such as glutathione(GSH),cysteine(Cys),and homocysteine(Hcy),are important components of many amino acids andproteins.They are also basic buiding blocks that make up organisms and play an important role in physiology and pathology.Therefore,based on thefundamental characteristics of RTCs in vivo,researchers have reported their use in biosensing and imaging analysis and as carriers inlfe sciences andhealth sciences.n this review,we will itroduce the principles of RTLs and highlight their applications in biosensing and imaging analysis and as carriersreported from 2015 to 2020. | Yingshu Guo Xiaofei Zheng Xiuping Cao Wenxin Li Di Wu Shusheng Zhang | 2020 | Chinese Journal of Chemistry2020，38，12： | 2 |
| 18 | Colonization of endophyte Acremonium sp. D212 in Panax notoginseng and rice mediated by auxin and jasmonic acid显示文摘Endophytic fungi can be beneficial to plant growth. However, the molecular mechanisms under-lying colonization of Acremonium spp. remain unclear. In this study, a novel endophytic Acremonium strain was isolated from the buds of Panax notoginseng and named Acremonium sp. D212. The Acremonium sp. D212 could colonize the roots of P. notoginseng, enhance the resistance of P. notoginseng to root rot disease, and promote root growth and saponin bio-synthesis in P. notoginseng. Acremonium sp. D212 could secrete indole-3-acetic acid (IAA) and jasmonic acid (JA), and inoculation with the fungus increased the endogenous levels of IAA and JA in P. noto-ginseng. Colonization of the Acremonium sp. D212 in the roots of the rice line Nipponbare was dependent on the concentration of methyl jasmonate (MeJA) (2–15μmol/L) and 1-naphthalenacetic acid (NAA) (10–20μmol/L). Moreover, the roots of the JA signaling-defective coi1-18 mutant were colonized by Acremonium sp. D212 to a lesser degree than those of the wild-type Nipponbare and miR393b-overexpressing lines, and the colonization was res-cued by MeJA but not by NAA. It suggests that the cross-talk between JA signaling and the auxin biosynthetic pathway plays a crucial role in the colonization of Acremonium sp. D212 in host plants. | Li Han Xuan Zhou Yiting Zhao Shusheng Zhu Lixia Wu Yunlu He Xiangrui Ping Xinqi Lu Wuying Huang Jie Qian Lina Zhang Xi Jiang Dan Zhu Chongyu Luo Saijie Li Qian Dong Qijing Fu Kaiyuan Deng Xin Wang Lei Wang Sheng Peng Jinsong Wu Weimin Li JiǐíFriml Youyong Zhu Xiahong He Yunlong Du | 2020 | Journal of Integrative Plant Biology2020，62，9： | 2 |
| 19 | Preparation and luminescent properties of (Ca 1- x ,Sr x )S:Eu 2+ red-emitting phosphor for white LED显示文摘 | Yunsheng Hu Weidong Zhuang Hongqi Ye Shusheng Zhang Ying Fang Xiaowei Huang | 2004 | Journal of Luminescence2004，，3： | 2 |
| 20 | EFFECTS OF MOLECULAR WEIGHT ON THERMAL RESPONSIVE PROPERTY OF PEGYLATED POLY-L-GLUTAMATES显示文摘We investigated the ring opening polymerization (ROP) of di- and tri-ethylene glycol monomethyl ether functionalized L-glutamate N-carboxyanhydrides (NCAs) using hexamethyldisilazane (HMDS) as primary initiator and 1,5,7-triazabicyclo-[4.4.0]dec-5-ene (TBD) as co-initiator. The binary initiator system afforded a living ROP for these pegylated NCAs, and a series of homopolypeptides with controlled molecular weight (MW) and low polydispersity were obtained. We then systematically studied the helical content and clouding point (CP) dependence on polypeptide MW using circular dichroism (CD) spectroscopy and turbidity measurements, respectively. We found that the helical content of both homopolypeptides increased with MW, but the triethylene glycol functionalized poly-L-glutamate (poly-L-EG3Glu) intended to form more stable α-helical structure than diethylene glycol functionalized counterpart (poly-L-EG2Glu) at similar MW. Accordingly, the CP of poly-L-EG2 Glu with known end group has strong dependence on its helical content, which is essentially determined by MW. Our results suggested that the thermal responsive properties of these unique pegylated poly- L-glutamates not only rely on their chemical structure but also on their secondary structures, which is different from conventional thermal responsive polymers. | Shusheng Zhang Chongyi Chen 李志波 | 2013 | Chinese Journal of Polymer Science2013，31，2： | 2 |
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