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| 1 | Fine-Tuning of MiR528 Accumulation Modulates Flowering Time in Rice显示文摘In plants,microRNA (miRNA) functions in the post-transcriptional repression of target mRNAs have been well explored.However,the mechanisms regulating the accumulation of miRNAs remain poorly under.stood.Here,we report that distinct mechanisms regulate accumulation of a monocot-specific miRNA,rice (Oryza sativa) miR528.At the transcriptional level,miR528 accumulated to higher levels in older plants than in young seedlings and exhibited aging-modulated gradual accumulation and diurnal rhythms in leaves;at the post-transcriptional level,aging also modulated miR528 levels by enhancing pri-miR528 alter.native splicing.We found that miR528 promotes rice flowering under long-day conditions by targeting RED AND FAR-RED INSENSITIVE2 (OsRFI2).Moreover,natural variations in the MIR528 promoter region caused differences in miR528 expression among rice varieties,which are correlated with their different binding affinities with the transcription factor OsSPL9 that activates the expression of miR528.Taken together,our findings reveal rice plants have evolved sophisticated modes fine-tuning miR528 levels and provide insight into the mechanisms that regulate MIRNA expression in plants. | Rongxin Yang Pingchuan Li Hailiang Mei Dong Wang Jing Sun Chao Yang Lili Hao Shouyun Cao Chengcai Chu Songnian Hu Xianwei Song Xiaofeng Cao | 2019 | Molecular Plant2019，12，8： | 12 |
| 2 | Hierarchically porous Fe/N/S/C nanospheres with high-content of Fe-Nx for enhanced ORR and Zn-air battery performance显示文摘Heteroatom-doped carbon-based transition-metal single-atom catalysts(SACs) are promising electrocatalysts for oxygen reduction reaction(ORR). Herein, with the aid of hierarchically porous silica as hard template, a facile and general melting perfusion and mesopore-confined pyrolysis method was reported to prepare single-atomic Fe/N–S-doped carbon catalyst(FeNx/NC-S) with hierarchically porous structure and well-defined morphology. The FeNx/NC-S exhibited excellent ORR activity with a half-wave potential(E_(1/2)) of 0.92 V, and a lower overpotential of 320 mV at a current density of 10 mA cm^(-2)for OER under alkaline condition. The remarkable electrocatalysis performance can be attributed to the hierarchically porous carbon nanospheres with S doping and high content of Fe-Nx sites(up to 3.7 wt% of Fe), resulting from the nano-confinement effect of the hierarchically porous silica spheres(NKM-5) during the pyrolysis process. The rechargeable Zn-air battery with FeNx/NC-S as a cathode catalyst demonstrated a superior power density of 194.5 mW cm-2charge–discharge stability. This work highlights a new avenue to design advanced SACs for efficient sustainable energy storage and conversion. | Luming Wu Ruge Zhao Guo Du Huan Wang Machuan Hou Wei Zhang Pingchuan Sun Tiehong Chen | 2023 | Green Energy & Environment2023，8，6： | 1 |
| 3 | Simulated annealing study of diblock copolymer thin films confined between two homogeneous surfaces 显示文摘 | Yin Yuhua Sun Pingchuan Chen Tiehong | 2004 | ChemPhysChem2004，，5： | 1 |
| 4 | Simulated annealing study of morphological transitions of diblock copolymers in solution显示文摘 | Sun Pingchuan Yin Yuhua Li Baohui | 2005 | J Chem Phys2005，122，： | 1 |
| 5 | Confinement-induced novel morphologies of block copolymers显示文摘 | Yu Bin Sun Pingchuan Chen Tiehong | 2006 | Physical Review Letters2006，96，13： | 1 |
| 6 | Synthesis and characterization of thermo- and pH- sensitive hydrogels based on Chitosan-grafted N-isopropylacrylamide via γ-radiation 显示文摘 | Cai Hong Zhang Zhengpu Sun Pingchuan | 2005 | Radiation Phys Chem2005，74，1： | 1 |
| 7 | Influence of polymerization temperature on the molecular recognition of imprinted polymers显示文摘 | Yan Lu Chenxi Li Xudong Wang Pingchuan Sun Xianghua Xing | 2003 | Journal of Chromatography B2003，，1： | 1 |
| 8 | A study on the templating ability of diquaternary cations for the zeolite synthesis in terms of energetics 显示文摘 | Sun Pingchuan Jin Qinghua Wang Lijun | 2003 | J Porous Materials2003，10，： | 1 |
| 9 | Antifogging and antibacterial properties of amphiphilic coatings based on zwitterionic copolymers显示文摘Tackling fogging and microbial infection problems related to the endoscope lens remain challenges due to visual disturbances and bacterial threats to human health.Herein,highly transparent antifogging and antibacterial coatings were developed in a facile way by thermal curing of zwitterionic copolymers poly(n-butyl methacrylate-co-2-aminoethyl methacrylate-co-sulfobetaine methacrylate)s with 1,3,5-triformylbenzene.Characterizations of surface chemical composition and wettability suggested that the copolymer coatings exhibited amphiphilicity with a hydrophobic surface and internal hydrophilicity.The prepared amphiphilic coating exhibited excellent antifogging properties both in vivo and in vitro.The introduction of hydrophobic n-butyl methacrylate and cationic aminoethylmethacrylate could improve the stability and antibacterial capability of the coating.The growth inhibition rates of the coatings against Staphylococcus aureus and Escherichia coli were up to 99%and the copolymer coatings with the zwitterionic groups had low hemolytic rates less than 3%.The amphiphilic copolymer coatings combined antifogging and antibacterial properties may have a promising potential for applications in biomedical devices. | ZHAO ChiXu YUAN XiaoYan BAI Shan SUN PingChuan ZHAO YunHui ZHU KongYing REN LiXia LI XiaoHui | 2021 | Science China(Technological Sciences)2021，64，4： | 1 |
| 10 | SYNTHESIS OF NANOPOROUS SILICA WITH INTERIOR COMPOSITE CELLS WITH SYNTHETIC BLOCK COPOLYPEPTIDE AS TEMPLATE显示文摘Nanoporous silica with unusual interior composite cells was synthesized with synthetic block copolypeptide Phe20-b-PBLG50 as template for the first time. Anilino-methyl triethoxy silane (AMTS) was used as an intermedium to interact with block co-polypeptide Phe20-b-PBLG50 through π-π interaction between the phenyl groups of block copolypeptide and those of AMTS. Meanwhile, AMTS co-condenses together with tetraethoxylsilane (TEOS) after hy-drolysis. The structure of composite vesicles due to the self-assembly of block copolypeptide in the or-ganic solvent was immobilized and transcribed by the formation of silica. The formation of nanopores could be ascribed to the secondary structure of block co-polypeptide and small molecular amine. Our results provide a new avenue to synthesize porous oxide materials with novel interior structures templated by the copolypeptide self-assembly under ambient con-ditions. | LIU Yuping ZHOU Huijing SHEN Zhurui LI Liying ZHOU Xingdi SUN Pingchuan YUAN Zhongyong CHEN Tiehong LI Baohui DING Datong | 2006 | Chinese Science Bulletin2006，51，4： | 0 |
| 11 | STUDIES ON THE CHEMICAL STRUCTURES OFACTIVATED CARBON FIBERS BY SOLID STATE NMR显示文摘The solid stale C13-NMR spectra of different ACFs from various precursor fiberswere recorded in this paper. The effects of activation conditions on chemical structuresOf ACFs, as well as the changes of chemical structures during carbonization and redoxreaction were investigated by NMR technique. At same time, the solid state P31-NMRspectra of ACFs are studied The C13-NMR spectra of ACFs can be divided into sixbands that are assigned to methyl and methylene groups, hydroxyl and ether groups,acetal (or methylenedioxy carbon, graphite-like aromatic carbon structure, phenol,and quinone groups, respectively. Only phosphorous pentoxide exists on ACFs andCFs. Moreover, most of them are stuck over the crystal face but not at the edge ofgraphite-like micro-crystaL The carbonization and activation conditions affect theC13-NMR spectra of ACFs. The experimental results indicate that the redox reactionof ACFs with oxidants greatly consumes C-H group. | FU Ruowen LIU Ling ZENG Hanmin HUANG Wenqiang SUN Pingchuan(Materials Science Institute, Zhongshan University Guangzhou, China2State key laboratory of functional polymer materials for adsorption and separationNankai University Tianjin, Chinacesfrw@zsulin | 1999 | Chinese Journal of Reactive Polymers1999，8，1： | 0 |
| 12 | Solid state NMR study of hydrogen bonding, miscibility, and dynamics in multiphase polymer systems显示文摘The application of solid state NMR(SS NMR)to the study of multiphase polymer systems is growing rapidly.This article aims to provide an overview of the current state of development of this field,paying particular attention to the study of hydrogen bonding in hydrogen-bonded polymer materials through SS NMR investigations.The effection of hydrogen bonds on the miscibility,phase separation and dynamic behavior of selected systems will also be discussed,based on work during the last 10 to 15 years. | Weigui FU Pingchuan SUN | 2011 | Frontiers of Chemistry in China2011，6，3： | 0 |
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