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Halogen-bond induced unusual polyhalogen anions formation in hydrogen-bonded frameworks to secure iodine sequestration

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Nano Research 2024年第7期17卷 6766-6772页

作者： Yi xie Pengling Huang Qiang Gao Shiyu Wang Jianchen Wang gang Ye Collaborative Innovation Center of Advanced Nuclear Energy Technology Institute of Nuclear and New Energy TechnologyTsinghua UniversityBeijing 100084China

Safe confinement of fission iodine isotopes for long-term radioactive waste disposal remains a formidable challenge,as conventional sorbents provide inherently weak iodine-host *** report here a novel halogen bond(X-bond)directed strategy to sequester volatile iodine in hydrogen-bonded(H-bonded)frameworks with unprecedented ***-assisted Hbonded frameworks bearing open halide sites are developed,showing distinctive iodine encapsulation behaviors without compromising the *** crystallographic evidence indicates the formation of X-bonds,i.e.,I–I···Cl^(−) and I–I···Br^(−),within the confined pore *** polyhalogen anions,i.e.,[I_(2)Cl_(2)]^(2−)and[I_(2)Br_(2)]^(2−),sustained in H-bonded frameworks are identified for the first *** X-bond reinforced host-guest interaction affords robust iodine trapping without leaking out even at elevated temperatures up to 180℃.By integrating the halogen-bond chemistry with H-bonded frameworks,this study offers fresh concepts for developing effective host reservoirs to secure fission iodine isotopes from spent fuel reprocessing off-gases.

关键词： halogen-bond chemistry anion coordination chemistry hydrogen-bonded organic frameworks polyhalogen anions iodine confinement

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Utopian Sojourn

China Today 2012年第7期61卷 60-63,6页

作者： xie gang

CELEBRATED ＂recluse＂ poet Tao Yuanming of the Eastern Jin Dynasty （316-420） was also author of the short prose work entitled A Tale of Peach Blossom Valley. It tells of a mountain-encircled land removed from temporal existence, laced with crystal-clear rivers and girded with bridges, whose inhabitants live a carefree life of peace and prosperity. The Chinese title of this work Taohuayuan Ji has since been synonymous with Utopia.

关键词：桃花源乌托邦诗人散文传说

On Convergence Bounds of GMRES Algorithm

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On Convergence Bounds of GMRES Algorithm

A New Type of Biomimetic Model: Design, Synthesis andCharacteriration of Imidazolium Bis-Estrogen

The Fourth International Conference on Parallel and Distributed Computing, Applications and Technologies

作者： gang xie Institute of Computer Applications CAEPChina.

In this paper we first make a brief review of GMRES convergence *** we derive new bounds for the GMRES residual norm by making use of a unitary matrix U and a Hermitian positive definite matrix P which are GMRES-equivalent to the cofficient matrix A with respect to the initial residual *** existence of such U and P was proved by Leonid[2].As a GMRES residual norm bound for linear systems with Hermitian positive definite cofficient matrices is known and a GMRES residual norm bound for linear systems with unitary cofficient matrices can be readily derived from Liesen’s work[l],our new bounds follow from the fact that two GMRES-equivalent matrices make the same residual.

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Chinese Chemical Letters 1997年第5期8卷 387-388页

作者： Zhi Chang LIU Cheng He ZHOU Ru gang xie (Department of Chemistry, Faculty of Science, Sichuan Union University, Chengdu 610064) Department of Chemistry Faculty of Science Sichuan Union University Chengdu 610064 China

Two imidazolium bis-estrogens as a new type of biomimetic model, which possesspotential multiple biomimetic functions, were srnthesized in gcod yields by three steps fromestrogen. All new compounds were characterized ... 详细信息

关键词： Design A New Type of Biomimetic Model Synthesis and Characterization of Imidazolium Bis-Estrogen

3D Co(II, III) mixed-valence metal-organic framework affording field-induced slow magnetic relaxation

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Science China Chemistry 2015年第6期58卷 1032-1038页

作者： Sheng Zhang Xiangyu Liu Bin Liu Zhengqiang Xia Weitao Wang Qi Yang Hongshan Ke Qing Wei gang xie Sanping Chen Shengli Gao Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education College of Chemistry and Materials Science Northwest University School of Chemistry and Chemical Engineering Ningxia University College of Chemistry and Chemical Engineering Shaanxi University of Science & Technology

A 3D mixed-valence Co（Ⅲ）-Co（Ⅱ） compound [Co9（bta）10（Hbta）2（H2O）10]n·[22（H2O）]n （1）（H2bta=N,N-bis（1H-tetrazole-5- yl）-amine） was hydrothermally synthesized by reaction of Co（NO3）2·6H2O with H2bta·H2O. Compound 1 consists of three kinds of distorted-octahedral [CoⅡ（N4O2）] paramagnetic nodes which are separated by [CoⅢ（bta）2（Hbta）]2-/[CoⅢ（bta）3]3- dia- magnetic linkers to generate a 3D porous metal-organic framework （MOF） with alternative …Co（Ⅲ）…Co（II）… array and channels incorporating water molecules. Under an applied magnetic field of 4000 Oe, compound 1 exhibits slow relaxation of magnetization at low temperatures, giving AE/kB=30.O0 K and ι0=2.0×10^-8 s.

关键词： Co(Ⅱ, Ⅲ) mixed-valence metal-organic framework, slow magnetic relaxation

Enantioselective Hydrolysis of α-Amino Acid Ester by Chiral Metallomicelles

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Chinese Chemical Letters 1998年第4期9卷 335-337页

作者： Jing Song YOU Xiao Qi YU Xiao Ling ZHANG and Ru gang xie(Department of Chemistry, Sichuan University, Chengdu 610064) Department of Chemistry Sichuan University Chengdu 610064 China

A series of chiral lipophilic Cu(Ⅱ) complexes were investigated as catalysts for the enantioselective hydrolysis of R(S)-p-nitrophenyl N-dodecanoyl-phenylalaninate in micelles. The highest enantioselectivity (kR/ks=7... 详细信息

关键词： micelle chiral metallomicelle enantioselective hydrolysis

FUNCTIONALIZED CYCLODEXSTRINS BEARING AM INOALKYLIMINO GROUPS AS ACTIVE CENTERS TO CATALYZE ALDOL CONDENSATIONS

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Chinese Chemical Letters 1991年第8期2卷 617-620页

作者： De Qi YUAN Ru gang xie Hua Ming ZHAO Department of Chemistry Sichuan UniversityChengduSichuan 610054

Efficient catalysis of functinnatized β-cyctodextrins bearing aninoatkytimino groups for atdot condensations of nitrobenzatdehydes and acetone has been effected and substantiated by preparative experiments

关键词： NBA FUNCTIONALIZED CYCLODEXSTRINS BEARING AM INOALKYLIMINO GROUPS AS ACTIVE CENTERS TO CATALYZE ALDOL CONDENSATIONS AS AM

The Synthesis of New Sulfur-containing Chiral Macrocyclic Ligands

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Chinese Chemical Letters 1997年第10期8卷 853-854页

作者： Xiao Ling ZHANG Jing Song YOU Xing Shu LI Ru gang xie(Department of Chemistry, Sichuan Union University, Chengdu 610064) Department of Chemistry Sichuan Union University Chengdu 610064 China

Five new chiral sulfur-containing macrocyclic ligands which can be used in chiral recognition to guests have been synthesized and characterized

关键词： OCH Li Cl The Synthesis of New Sulfur-containing Chiral Macrocyclic Ligands

Recent Progresses on Dopant-Free Organic Hole Transport Materials toward Efficient and Stable Perovskite Solar Cells

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Chinese Journal of Chemistry 2023年第22期41卷 3133-3166页

作者： gang xie Jintao Chen Huiyu Li Jianxin Yu Haoran Yin Zhiping Wang Yaoyao Huang Chuizheng Feng Yang Pan Aihui Liang Yiwang Chen National Engineering Research Center for Carbohydrate Synthesis/Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education Jiangxi Normal University99Ziyang AvenueNanchangJiangxi330022China College of Chemistry and Chemical Engineering/Institute of Polymers and Energy Chemistry(IPEC) Nanchang University99 Xuefu AvenueNanchangJiangxi330031China

As the third generation new battery,the power conversion efficiency(PCE)of metal halide perovskite solar cells(PsCs)has increased from 3.8%in 2009 to 25.8%currently certified,which fully shows that they have great research value and development *** one of the main components of high-efficiency PSCs,hole transport materials(HTMs)play an important role in extracting and transporting holes and inhibiting charge ***,commonly used HTMs require doping,and the hygroscopicity and corrosiveness of the dopants will destroy the stability of PsCs and hinder their ***,it is of great significance to develop dopant-free HTMs.

关键词： Organic hole transport materials Dopant-free Perovskite solar cells Efficient Stable