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| 1 | Ionic liquids: Efficient solvent and medium for the transformation of renewable lignocellulose显示文摘Carbon-enriched lignocelluloses are regarded as the perfect alternative for nonrenewable fossil fuel, and have a great potential to alleviate the increasing energy crisis and climate change. However, the tightly covalent structure and strong intra and in- ter-molecular hydrogen bonding in lignocellulose make it high recalcitrance to transformation due to the poor solubility in wa- ter or common organic solvents. Dissolution and transformation of lignocellulose and its constituents in ionic liquids have therefore attracted much attention recently due to the tunable physical-chemical properties. Here, ionic liquids with excellent dissolving capability for biomass and its ingredients were examined. The technologies for lignocellulose biorefining in the presence of ionic liquid solvents or catalysts were also summarized. Some pertinent suggestions for the future catalytic conver- sion and unitization of this sustained carbon-rich resource are proposed. | LONG JinXing LI XueHui WANG LeFu ZHANG Ning | 2012 | Science China Chemistry2012，55，8： | 3 |
| 2 | Which is the determinant for cellulose degradation in cooperative ionic liquid pairs: dissolution or catalysis?显示文摘Catalytic conversion of sustainable cellulose to the value-added chemicals and high quality biofuel has been recognized as a perfect approach for the alleviation of the dependence on the non-renewable fossil resources. Previously, we successfully designed and explored novel and efficient cooperative ionic liquid pairs for this renewable material, which has advantages of high reactor efficiency than current technologies because of the dissolution and in situ catalytic decomposition mechanism. Here, the determinant of this process is further studied by the intensive investigation on the relationship between the cellulose conversion and the properties of ionic liquid catalyst and solvent. Scanning electron microscope(SEM), thermogravimetric analysis(TG) and elemental analysis were used for the comparative characterization of raw cellulose and the residues. The results demonstrate that this consecutive dissolution and in situ catalysis process is much more dependent on the dissolution capability of ionic liquid solvent, while comparatively, the effect of in situ acid catalysis is relatively insignificant. | Jinxing Long Yangyu Zhang Lefu Wang Xuehui Li | 2016 | Science China Chemistry2016，59，5： | 2 |
| 3 | Histone methyltransferase Nsd2 ensures maternal-fetal immune tolerance by promoting regulatory T-cell recruitment显示文摘Regulatory T cells(Tregs)are fundamentally important for maintaining systemic immune homeostasis and are also required for immune tolerance at the maternal-fetal interface during pregnancy.Recent studies have suggested that epigenetic regulation is critically involved in Treg development and function.However,the role of H3K36me has not yet been investigated.Here,we found that the H3K36me2 methyltransferase Nsd2 was highly expressed in Tregs.Although loss of Nsd2 did not impair systemic Treg development or function,the level of Tregs at the maternal-fetal interface was significantly decreased in pregnant Nsd2 conditional knockout mice.Consequently,maternal-fetal immune tolerance was disrupted in the absence of Nsd2 in Tregs,and the pregnant mice showed severe fetal loss.Mechanistically,Nsd2 was found to upregulate CXCR4 expression via H3K36me2 modification to promote Treg cell recruitment into the decidua and suppress the anti-fetal immune response.Overall,our data identified Nsd2 as a critical epigenetic regulator of Treg recruitment for maternal-fetal tolerance. | Le Zhang Xuehui Long Yuye Yin Jun Wang Huamin Zhu Jingjing Chen Yuliang Wang Yun Chen Xiaoming Wang | 2022 | Cellular & Molecular Immunology2022，19，5： | 0 |
| 4 | Synthesis and fluorescent properties of quinoxaline derived ionic liquids显示文摘Ionic liquids(ILs) have attracted increasing attention since last few decades due to their high molecular design abilities and wide applications in different fields.In this study,four novel fluorescent isoquinolino [2,1-a]quinoxalin-5-ium ILs were designed and synthesized via a two-step process including a simple dual Schiff’s base formation and a subsequent [RhCp*Cl_(2)]_(2)-catalyzed oxidative C-H activation/annulation reaction.The as-synthesized ILs were extensively characterized using FT-IR,~1 H-NMR,^(13)C-NMR,^(19)F-NMR,HSQC-NMR,HMBC-NMR and HR-MS.Their photophysical properties were determined by steady-state fluorescence spectroscopy.The results demonstrate that all these ILs showed dual or triple emissions,large stokes shift(90 nm) and mechanochromic behaviors.Basing on solvatochromism and titration experiments,it is thought that the emission bands of the ILs are raised from their local excited states,charge transfer states or excited state proton transfer of cations,while the substitute effect of these quinoxaline derived ILs on their stokes shifts is negligible. | Jiaqi Wu Lei Zhang Jinxing Long Qiang Zeng Biaolin Yin Xuehui Li | 2022 | Green Energy & Environment2022，7，5： | 0 |
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