keyword
MENU ▼
Read by QxMD icon Read
search

MOF

keyword
https://www.readbyqxmd.com/read/28544389/bimetal-organic-framework-derivation-of-ball-cactus-like-ni-sn-p-c-cnt-as-long-cycle-anode-for-lithium-ion-battery
#1
Ruoling Dai, Weiwei Sun, Li-Ping Lv, Minghong Wu, Hao Liu, Guoxiu Wang, Yong Wang
Metal phosphides are a new class of potential high-capacity anodes for lithium ion batteries, but their short cycle life is the critical problem to hinder its practical application. A unique ball-cactus-like microsphere of carbon coated NiP2 /Ni3 Sn4 with deep-rooted carbon nanotubes (Ni-Sn-P@C-CNT) is demonstrated in this work to solve this problem. Bimetal-organic-frameworks (BMOFs, Ni-Sn-BTC, BTC refers to 1,3,5-benzenetricarboxylic acid) are formed by a two-step uniform microwave-assisted irradiation approach and used as the precursor to grow Ni-Sn@C-CNT, Ni-Sn-P@C-CNT, yolk-shell Ni-Sn@C, and Ni-Sn-P@C...
May 22, 2017: Small
https://www.readbyqxmd.com/read/28543992/surface-modification-of-two-dimensional-metal-organic-layers-creates-biomimetic-catalytic-microenvironments-for-selective-oxidation
#2
Wenjie Shi, Lingyun Cao, Hua Zhang, Xin Zhou, Bing An, Zekai Lin, Ruihan Dai, Jianfeng Li, Cheng Wang, Wenbin Lin
Microenvironments in enzymes play crucial roles in controlling the activities and selectivities of reaction centers. Herein we report the tuning of the catalytic microenvironments of metal-organic layers (MOLs), a two-dimensional version of metal-organic frameworks (MOFs) with thickness down to a monolayer, to control product selectivities. By modifying the secondary building units (SBUs) of MOLs with monocarboxylic acids such as gluconic acid, we successfully changed the hydrophobicity/hydrophilicity around the active sites and fine-tuned the selectivity in photocatalytic oxidation of tetrahydrofuran (THF) to exclusively afford butyrolactone (BTL), likely via prolonging residence time of reaction intermediates in the hydrophilic microenvironment of catalytic centers...
May 23, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28541696/reversible-redox-activity-in-multicomponent-metal-organic-frameworks-constructed-from-trinuclear-copper-pyrazolate-building-blocks
#3
Binbin Tu, Qingqing Pang, Huoshu Xu, Xiaomin Li, Yulin Wang, Zhen Ma, Linhong Weng, Qiaowei Li
Inorganic functionalization of metal-organic frameworks (MOFs), such as incorporating multiple inorganic building blocks with distinct metals into one structure and further modulating the metal charges, endows the porous materials with significant properties towards their applications in catalysis. In this report, by exploring the role of 4-pyrazolecarboxylic acid (H2PyC) in the formation of trinuclear copper pyrazolate as a metalloligand in situ, four new MOFs with multiple components in order were constructed through one-pot synthesis...
May 25, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28541694/metal-organic-frameworks-for-heterogeneous-basic-catalysis
#4
Li Zhu, Xiao-Qin Liu, Hai-Long Jiang, Lin-Bing Sun
Great attention has been given to metal-organic frameworks (MOFs)-derived solid bases because of their attractive structure and catalytic performance in various organic reactions. The extraordinary skeleton structure of MOFs provides many possibilities for incorporation of diverse basic functionalities, which is unachievable for conventional solid bases. The past decade has witnessed remarkable advances in this vibrant research area; however, MOFs for heterogeneous basic catalysis have never been reviewed until now...
May 25, 2017: Chemical Reviews
https://www.readbyqxmd.com/read/28541686/general-oriented-formation-of-carbon-nanotubes-from-metal-organic-frameworks
#5
Jiashen Meng, Chaojiang Niu, Linhan Xu, Jiantao Li, Xiong Liu, Xuanpeng Wang, Yuzhu Wu, Xiaoming Xu, Wenyi Chen, Qi Li, Zi-Zhong Zhu, Dongyuan Zhao, Liqiang Mai
Carbon nanotubes (CNTs) are of great interest for many potential applications because of their extraordinary electronic, mechanical and structural properties. However, issues of chaotic staking, high cost and high energy dissipation in the synthesis of CNTs remain to be resolved. Here we develop a facile, general and high-yield strategy for the oriented formation of CNTs from metal-organic frameworks (MOFs) through a low-temperature (as low as 430 °C) pyrolysis process. The selected MOF crystals act as a single precursor for both nanocatalysts and carbon sources...
May 25, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28541301/construction-of-hierarchically-porous-metal-organic-frameworks-through-linker-labilization
#6
Shuai Yuan, Lanfang Zou, Jun-Sheng Qin, Jialuo Li, Lan Huang, Liang Feng, Xuan Wang, Mathieu Bosch, Ali Alsalme, Tahir Cagin, Hong-Cai Zhou
A major goal of metal-organic framework (MOF) research is the expansion of pore size and volume. Although many approaches have been attempted to increase the pore size of MOF materials, it is still a challenge to construct MOFs with precisely customized pore apertures for specific applications. Herein, we present a new method, namely linker labilization, to increase the MOF porosity and pore size, giving rise to hierarchical-pore architectures. Microporous MOFs with robust metal nodes and pro-labile linkers were initially synthesized...
May 25, 2017: Nature Communications
https://www.readbyqxmd.com/read/28541029/homochiral-mof-as-circular-dichroism-sensor-for-enantioselective-recognition-on-nature-and-chirality-of-unmodified-amino-acids
#7
Yan-Wu Zhao, Yan Wang, Xian-Ming Zhang
Self-assembly of zinc salt with rationally designed chiral ligand, (1R,2R)-2-(pyridine-4-yl carbamoyl) cyclohexanecarboxylic acid (RR-PCCH) generated 2D homochiral metal-organic framework [Zn(RR-PCCHC)2] (HMOF-1) that is composed of DNA-like right-handed double-helix structure. HMOF-1 shows high solvent and thermal stability and is also stable in neutral, weak acidic and weak basic aqueous solution. Emulsified HMOF-1 shows strong inherent circular dichroism (CD) signal in aqueous solution, which can show regular intensity change by induction of amino acids...
May 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28540729/dye-bio-mof-1-composite-as-a-dual-emitting-platform-for-enhanced-detection-of-a-wide-range-of-explosive-molecules
#8
Chen Wang, Li Tian, Wei Zhu, Shiqiang Wang, Peng Wang, Yun Liang, Wanlin Zhang, Hongwei Zhao, Guangtao Li
By incorporating a cationic dye within metal-organic framework (MOF) through ion-exchange process, a responsive dye@bio-MOF-1 composite has been synthesized, serving as a dual-emitting platform for enhanced detection of different kinds of nitro-explosives, especially the nitroalkanes, nitramines and nitrate esters. The dye@bio-MOF-1 composite was constructed with free amines on their well-defined cavities, which is essential for the capture of explosives into their confined nanospace. It was observed that the encapsulation of explosives into the constructed dye@bio-MOF-1 composite could dramatically alter the luminescent properties of the dyes as well as the MOF skeletons owing to the size exclusivity and confinement-induced effect...
May 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28540205/clinicopathological-spectrum-of-snake-bite-induced-acute-kidney-injury-from-india
#9
Sanjay Vikrant, Ajay Jaryal, Anupam Parashar
AIM: To study the clinico-pathological spectrum of snake bite-induced acute kidney injury (AKI). METHODS: A retrospective study of patients admitted at Indira Gandhi Medical College Hospital, Shimla with snake bite-induced AKI from July 2003 to June 2016. Medical records were evaluated for patient's information on demographic, clinical characteristics, complications and outcome. Outcomes of duration of hospital stay, requirement for intensive care unit support, treatment with dialysis, survival and mortality were analyzed...
May 6, 2017: World Journal of Nephrology
https://www.readbyqxmd.com/read/28538636/the-role-of-nigms-p50-sponsored-team-science-in-our-understanding-of-multiple-organ-failure
#10
Frederick A Moore, Ernest E Moore, Timothy R Billiar, Yoram Vodovotz, Anirban Banerjee, Lyle L Moldawer
The history of the National Institute of General Medical Sciences (NIGMS) Research Centers in Peri-operative Sciences (RCIPS) is the history of clinical, translational and basic science research into the etiology and treatment of posttraumatic multiple organ failure (MOF). Born out of the activism of trauma and burn surgeons after the Viet Nam war, the P50 trauma research centers have been a nidus of research advances in the field, and the training of future academic physician-scientists in the fields of trauma, burns, sepsis and critical illness...
May 22, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28538098/two-dimensional-metal-organic-framework-nanosheets-as-an-enzyme-inhibitor-modulation-of-the-%C3%AE-chymotrypsin-activity
#11
Ming Xu, Shuai Yuan, Xin-Yu Chen, Yu-Jie Chang, Gregory Steven Day, Zhi-Yuan Gu, Hong-Cai Zhou
Two-dimensional metal-organic framework (MOF) nanosheets are utilized as effective enzyme inhibitors, providing an in-spiring means to enhance the control of cellular processes as well as improve our understanding of the surface chemistry between MOFs and enzymes. In this paper, we demonstrated that the activity of α-Chymotrypsin (ChT) can be effectively inhibited with 96.9% inhibition by the 2-D Cu(bpy)2(OTf)2 nanosheets, while the other Zn2(bim)4 nanosheets show no significant inhibition effect towards ChT...
May 24, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28537723/multivariate-metal-organic-frameworks-as-multifunctional-heterogeneous-asymmetric-catalysts-for-a-broad-of-sequential-reactions
#12
Qingchun Xia, Zijian Li, Chunxia Tan, Yan Liu, Wei Gong, Yong Cui
The search for versatile heterogeneous catalysts with multiple active sites for a broad of asymmetric transformations has long been of great interest, but it remains a formidable synthetic challenge. Here we demonstrate that multivariate metal-organic frameworks (MTV-MOFs) can be used as an excellent platform to engineer heterogeneous catalysts featuring multiple and cooperative active sites. An isostructural series of twofold interpenetrated MTV-MOFs that contain up to three different chiral metallosalen catalysts were constructed and used as efficient and recyclable heterogeneous catalysts for a variety of asymmetric sequential alkene epoxidation/epoxide ring-opening reactions...
May 24, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28537718/homochiral-metal-organic-frameworks-with-tunable-nanoscale-channel-array-and-their-enantioseparation-performance-against-chiral-diols
#13
Chao Zhuo, Yuehong Wen, Shengmin Hu, Tianlu Sheng, Ruibiao Fu, Zhenzhen Xue, Hao Zhang, Haoran Li, Jigang Yuan, Xi Chen, Xintao Wu
Enantioseparation is an integral process in the pharmaceutical industry, considering the ever-increasing demand for chiral medicine products. As a new material, porous metal-organic frameworks (MOFs) have shown their potential application in this field because their structures are easy to adjust and control. Though chiral recognition between racemic substrates and frameworks has made preliminary progress, discussions of their size-matching effects are rare. Herein with the help of channel-tunable homochiral MOFs (HMOFs), diols of different sizes have been separated in good enantiomeric excess (ee%)...
May 24, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28537402/an-efficient-blue-emissive-metal-organic-framework-mof-for-lanthanide-encapsulated-multicolor-and-stimuli-responsive-luminescence
#14
Wei Huang, Feifei Pan, Yang Liu, Shuaidan Huang, Yujie Li, Juan Yong, Yao Li, Alexander M Kirillov, Dayu Wu
A novel blue-emitting Zn(II) MOF featuring parallel 2D+2D interpenetrated layers and tubelike channels was generated and shown to efficiently accommodate lanthanide(III) cations (Ln(3+) = Eu(3+), Tb(3+), or a mixture of Eu(3+)/Tb(3+)), resulting in the Ln(3+)-encapsulated functional materials with a tunable emission color, including red, green, and nearly pure white light. Furthermore, the thermal-responsive luminescence was investigated for the lanthanide-codoped MOF to exhibit the chromic transition from white at room temperature to blue around liquid nitrogen temperature...
May 24, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28537384/cysteine-functionalized-metal-organic-framework-facile-synthesis-and-high-efficient-enrichment-of-n-linked-glycopeptides-in-cell-lysate
#15
Wen Ma, Linnan Xu, Xianjiang Li, Sensen Shen, Mei Wu, Yu Bai, Huwei Liu
Cysteine-functionalized metal-organic framework (MOF) was synthesized via a common and facile two-step method of in situ loading of Au nanoparticles on amino-derived MOF followed by L-Cysteine immobilization. Owing to the large specific surface area and ultrahigh hydrophilicity of this nanocomposite, excellent performance was observed in the enrichment of N-linked glycopeptides in both model glycoprotein and HeLa cell lysate. By using this nanocomposite, 16 and 31 glycopeptides were efficiently extracted from digest of horseradish peroxidase (HRP) and human serum immunoglobulin G (IgG), respectively...
May 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28537382/in-situ-monitoring-of-the-mechanosynthesis-of-the-archetypal-metal-organic-framework-hkust-1-effect-of-liquid-additives-on-the-milling-reactivity
#16
Tomislav Stolar, Lisa Batzdorf, Stipe Lukin, Dijana Žilić, Cristina Motillo, Tomislav Friščić, Franziska Emmerling, Ivan Halasz, Krunoslav Užarević
We have applied in situ monitoring of mechanochemical reactions by high-energy synchrotron powder X-ray diffraction to study the role of liquid additives on the mechanochemical synthesis of the archetypal metal-organic framework (MOF) HKUST-1, which was one of the first and is still among the most widely investigated MOF materials to be synthesized by solvent-free procedures. It is shown here how the kinetics and mechanisms of the mechanochemical synthesis of HKUST-1 can be influenced by milling conditions and additives, yielding on occasion two new and previously undetected intermediate phases containing a mononuclear copper core, and that finally rearrange to form the HKUST-1 architecture...
May 24, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28537379/molecular-rhodium-complexes-supported-on-the-metal-oxide-like-nodes-of-metal-organic-frameworks-and-on-zeolite-hy-catalysts-for-ethylene-hydrogenation-and-dimerization
#17
Varinia Bernales, Dong Yang, Jun Yu, Gamze Gümüşlü, Christopher J Cramer, Bruce C Gates, Laura Gagliardi
Metal-organic frameworks (MOFs) with nodes consisting of zirconium oxide clusters (Zr6) offer new opportunities as supports for catalysts with well-defined, essentially molecular, structures. We used the precursor Rh(C2H4)2(acac) (acac is acetylacetonate) to anchor Rh(I) complexes to the nodes of the MOF UiO-67 and, for comparison, to the zeolite dealuminated HY (DAY). These were characterized experimentally by measurement of catalytic activities and selectivities for ethylene hydrogenation and dimerization in a once-through flow reactor at 298 K and 1 bar...
May 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28537319/titanium-coordination-compounds-from-discrete-metal-complexes-to-metal-organic-frameworks
#18
REVIEW
Hala Assi, Georges Mouchaham, Nathalie Steunou, Thomas Devic, Christian Serre
Owing to their promise in photocatalysis and optoelectronics, titanium based metal-organic frameworks (MOFs) are one of the most appealing classes of MOFs reported to date. Nevertheless, Ti-MOFs are still very scarce because of their challenging synthesis associated with a poor degree of control of their chemistry and crystallization. This review aims at giving an overview of the recent progress in this field focusing on the most relevant existing titanium coordination compounds as well as their promising photoredox properties...
May 24, 2017: Chemical Society Reviews
https://www.readbyqxmd.com/read/28535334/maximizing-the-photocatalytic-activity-of-metal-organic-frameworks-with-aminated-functionalized-linkers-sub-stoichiometric-effects-in-mil-125-nh2
#19
Matthew Chambers, Xia Wang, Laura Ellezam, Ovidiu Ersen, Marc Fontecave, Clément Sanchez, Laurence Rozes, Caroline Mellot-Draznieks
Despite the promise of utilizing metal-organic frameworks (MOFs) as highly tunable photocatalytic materials, systematic studies that interrogate the relationship between their catalytic performances and the amount of function-alized linkers are lacking. Aminated linkers are known to enhance the absorption of light and afford photocatalysis with MOFs under visible-light irradiation. However, the manner in which the photocatalytic performances are impacted by the amount of such linkers is poorly understood. Here, we assess the photocatalytic activity of MIL-125, a TiO2/1,4-benzenedicarboxylate (bdc) MOF for the oxidation of benzyl alcohol to benzaldehyde when increasing amounts of bdc-NH2 linkers (0%, 20%, 46%, 70% and 100%) are incorporated in the framework...
May 23, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28534627/highly-stable-and-regenerative-metal-organic-framework-designed-by-multi-walled-divider-installation-strategy-for-detection-of-co-%C3%AE-%C3%AE-ions-and-organic-aromatics-in-water
#20
Kai Xing, Ruiqing Fan, Jiaqi Wang, Siqi Zhang, Kai Feng, Xi Du, Yang Song, Ping Wang, Yulin Yang
MOF-based sensors capable of effectively and stably detecting toxic species in water have attracted huge attention in terms of improving environmental monitoring levels and water quality. Combining the flexibility of structure and modifying of pore surface, a multi-walled divider installation (MWDI) strategy is proposed and used for property enhancement. We herein report three metal-organic frameworks (MOFs) 1-3 based on a C3 symmetry organic phosphonic ligand with topology increased from 3,6-connected to 3,8-connected...
May 23, 2017: ACS Applied Materials & Interfaces
keyword
keyword
78302
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"