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Copper(II)-based metal–organic framework delivery of calcium ascorbate for enhanced chemodynamic therapy via H2O2 self-supply and glutathione depletion

Biomater. Sci., 2024, 12,1871-1882
DOI: 10.1039/D3BM01922E, Paper
Meng Zhang, Hongjin Xue, Jiaxin Yang, Xin Zhao, Mei Xue, Wei Sun, Jianfeng Qiu, Zhihong Zhu
A Cu/ZIF-8/Vc-Ca/HA nanosystem synchronously releases Fenton catalytic Cu2+ and Vc-Ca to achieve improved chemodynamic therapy via H2O2 self-supply and GSH depletion.
The content of this RSS Feed (c) The Royal Society of Chemistry




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PET image-guided kidney injury theranostics enabled by a bipyramidal DNA framework

Biomater. Sci., 2024, 12,2086-2095
DOI: 10.1039/D3BM01575K, Paper
Open Access
Pinghui Li, Zhidie Huang, Xiaoyan Duan, Tao Wang, Shaowen Yang, Dawei Jiang, Jianbo Li
We constructed 68Ga-BDF and employed PET imaging to establish its pharmacokinetic model. BDF was eliminated from the body via the urinary system. We observed distinct imaging indicators in UUO and AKI mouse models. Furthermore, we observed the therapeutic effect of BDF on AKI.
The content of this RSS Feed (c) The Royal Society of Chemistry




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Porphyrin-Based Covalent Organic Frameworks from Design, Synthesis to Biological Applications

Biomater. Sci., 2024, Accepted Manuscript
DOI: 10.1039/D4BM00214H, Review Article
Open Access
Xin-Gui Li, Junjian Li, Jinfeng Chen, Liangmei Rao, Libin Zheng, Fei Yu, Yijing Tang, Jie Zheng, Jie Ma
Covalent organic frameworks (COFs) constitute a class of highly functional porous materials characterized by ordered structures, high crystallinity, and a substantial specific surface area, primarily composed of light atoms such...
The content of this RSS Feed (c) The Royal Society of Chemistry




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Ind vs NZ: The joys and sorrows of the high-risk game in a single frame

The high-risk style is set to continue, and whenever the Bengaluru Test situation arises again, there will be wistful talk of Cheteshwar Pujara, and even Sunil Gavaskar.




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RG Kar Hospital rape and murder case: Charges framed, trial to start from November 11

The charges against the accused were framed inside the chamber of Additional District Judge Sealdah. Mr. Roy, a civic police volunteer, was the only person charged by the CBI in the case.




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Single-layer 2D supramolecular-organic-framework-supported polyoxometalates: efficient selective oxidation of toluene in seawater under sunlight

Green Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4GC04480K, Paper
Xin-Long Ni, Yan Fan, Yi Luo, Xu Luo
Performing organic reactions in water, in particular in seawater under sunlight, is a desirable objective in chemistry because both are the most abundant and cheapest resources on earth. Herein, we...
The content of this RSS Feed (c) The Royal Society of Chemistry




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BJP leader kicks man trying to enter picture frame

The video shows a person coming into the frame and Danve kicking him with his right leg, asking him to move aside.




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RBI's framework for reclassification of FPI to FDI

The Reserve Bank of India on Monday issued an operational framework for reclassification of investment made by a foreign portfolio investor to foreign direct investment (FDI) if the entity breaches the prescribed limit. Markets regulator Sebi too has issued a circular on procedure for reclassification of FPI investment to FDI.




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The Policy Framework for Investment in Agriculture

The Policy Framework for Investment in Agriculture is a flexible tool which helps governments evaluate their investment policies in the ten areas essential to creating an attractive environment for investors and in enhancing the development benefits of agricultural investment.




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Public consultation on updating the Policy Framework for Investment

This public consultation was held to gather interested stakeholders' comments on the draft chapters of the Policy Framework for Investment currently being updated. The consultation ran until 31 December 2014.




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2nd Online public consultation on updating the Policy Framework for Investment

This online public consultation was held to gather interested stakeholders' comments on the draft Policy Framework for Investment currently being updated. The consultation ran until 25 February 2015.




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OECD Ministers launch new framework to boost sustainable investment

OECD Ministers have endorsed updated guidelines to help national governments and regional groups create the right conditions to attract domestic and foreign investment.




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Policy Framework for Investment - Pocket Edition 2015

The Policy Framework for Investment (PFI) is a comprehensive and systematic tool for improving investment conditions. The pocket edition of the PFI contains the full text of the 2015 update minus the supplemental questions and reference lists. Find the integral text and other tools online at www.oecd.org/investment/pfi.htm




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The Policy Framework for Investment (PFI)

The Policy Framework for Investment (PFI) is a non-prescriptive tool for improving investment policy for development. It helps governments to design and implement policy reforms to create a truly attractive, robust and competitive environment for domestic and foreign investment.




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Towards an international framework for investment facilitation

Many governments seek to promote and facilitate inward investments that they expect will benefit their economy. This paper looks at the merits of an international framework to facilitate investment in support of sustainable and inclusive growth.




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G20 ministers welcome OECD disaster risk assessment and financing framework

G20 Finance Ministers have welcomed a new OECD/G20 framework designed to help governments develop financial strategies for disaster risk management.




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Colombia: Assessment of the Regulatory Framework of Private Pensions

This review of Colombia by the OECD Working Party on Private Pensions examines Colombia’s position with respect to core principles related to pension systems.




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Peer Review Report of Luxembourg - Phase 1: Legal and Regulatory Framework

This report summarises the legal and regulatory framework for transparency and exchange of information for tax purposes in Luxembourg.




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A Framework for Financing Water Resources Management

This report provides a framework for policy discussions around financing water resources management that are taking place at local, basin, national, or transboundary levels.




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Integrated Assessment of Climate Change Impacts: Conceptual Frameworks, Modelling Approaches and Research Needs - Environment Working Paper No. 66

This paper presents a framework to include feedbacks from climate impacts on the economy in integrated assessment models. The proposed framework uses a production function approach, which links climate impacts to key variables and parameters used in the specification of economic activity. The paper pays particular attention to the challenges of distinguishing between damages and the costs of adapting to climate change.




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Korea : A framework for growth and social cohesion

This report was prepared to help Korea identify and address main social policy challenges. It suggests specific policy options and a strategy to “go social”, based on the practices and reforms that have worked well in other countries.




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G20: Remarks for Session 2 - Framework for Strong, Sustainable and Balanced Growth

We therefore need a “copernician” change in our approach to the growth – inequality nexus: let’s not think growth first, and inequality thereafter but let’s consider both of them, together, in their circularity. In other words, let’s think “Inclusive Growth”, right from the start, and let’s make it another touchstone of our efforts and complement the Pittsburgh tryptic of strong, sustainable and balanced growth!




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The quantification of structural reforms in OECD countries: a new framework

This document describes and discusses a new supply side framework that quantifies the impact of structural reforms on per capita income in OECD countries.




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OECD Framework for Regulatory Policy Evaluation

The OECD Framework for Regulatory Policy Evaluation assists countries in systematically evaluating the design and implementation of regulatory policy, against the achievement of strategic regulatory objectives.




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The quantification of structural reforms in OECD countries: a new framework

This document describes and discusses a new supply side framework that quantifies the impact of structural reforms on per capita income in OECD countries.




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OECD Global Conference on Governance Innovation: Towards Agile Regulatory Frameworks in the Fourth Industrial Revolution

Conference to exchange information on the need for and experience with governance innovation in the context of different sectors and different countries, both within and outside of the OECD, and to inform future OECD work.




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In support of its active enforcement efforts, Italy should urgently extend timeframe for prosecuting foreign bribery

The Phase 3 Report on Italy by the OECD Working Group on Bribery evaluates and makes recommendations on Italy's implementation and application of the OECD Convention on Combating Bribery of Foreign Public Officials in International Business Transactions and related instruments.




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Hungary has improved legal framework for fighting foreign bribery, but must do more to detect and prosecute

Hungary’s law banning bribery of foreign public officials is relatively good on paper but lacks effective application, according to a new OECD report. Hungary must strengthen detection and prosecution of individuals and companies involved in foreign bribery.




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Despite progress made and improved legal framework, OECD seriously concerned about Turkey’s level of detection and investigation of foreign bribery

Turkey is a significant and geopolitically critical economy. Its companies, like those from many other countries, operate in corruption-prone sectors and countries. In spite of this, only 10 allegations have come to the attention of Turkish authorities since foreign bribery became an offence in Turkey in 2003.




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Chile must conclude its current legislative reforms of the criminal sanctions regime and clarify its corporate liability framework to better combat foreign bribery

Chile must make further progress on key recommendations of the OECD Working Group on Bribery in International Business Transactions, more than three years after its Phase 3 evaluation in March 2014.




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Czech Republic should further develop its framework programme for preschool education, says OECD

The Czech Republic should build on the strengths of its preschool education framework to further enhance the quality of its early childhood education and care services, according to a new OECD report.




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The quantification of structural reforms in OECD countries: a new framework

This document describes and discusses a new supply side framework that quantifies the impact of structural reforms on per capita income in OECD countries.




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Reports to support efforts in the framework of the Strategic Approach to International Chemicals Management

The OECD/UNEP Global PFC group has published two new reports to support efforts in the framework of the Strategic Approach to International Chemicals Management (SAICM) to improve information sharing at a global level on perfluorinated chemistries.




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Faulty frame, savage reality


If you raise the price of your product and offer a discount on the higher price, some people will get taken in by such 'sales'. The WTO has just pulled off this kind of scheme, says Devinder Sharma.




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Quantification of the mixed-valence and intervalence charge transfer properties of a cofacial metal–organic framework via single crystal electronic absorption spectroscopy

Chem. Sci., 2020, Advance Article
DOI: 10.1039/D0SC01521K, Edge Article
Open Access
Patrick W. Doheny, Jack K. Clegg, Floriana Tuna, David Collison, Cameron J. Kepert, Deanna M. D'Alessandro
Gaining a fundamental understanding of charge transfer mechanisms in three-dimensional Metal–Organic Frameworks (MOFs) is crucial to the development of electroactive and conductive porous materials.
To cite this article before page numbers are assigned, use the DOI form of citation above.
The content of this RSS Feed (c) The Royal Society of Chemistry




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Punjab may frame law to ban songs, movies glorifying drugs and violence: Minister




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Write Libraries, Not Frameworks

When a programmer thinks "I've got some code that will make others' lives easier", there are two forms that can take: a library, or a framework.




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The crystal structure of (RS)-7-chloro-2-(2,5-di­meth­oxy­phen­yl)-2,3-di­hydro­quinazolin-4(1H)-one: two hydrogen bonds generate an elegant three-dimensional framework structure

In the title compound, C61H15ClN2O3, the heterocyclic ring adopts an envelope conformation, folded across the N⋯N line, with the 2,5-di­meth­oxy­phenyl unit occupying a quasi-axial site. There are two N—H⋯O hydrogen bonds in the structure: one hydrogen bond links mol­ecules related by a 41 screw axis to form a C(6) chain, and the other links inversion-related pairs of mol­ecules to form an R22(8) ring. The ring motif links all of the chains into a continuous three-dimensional framework structure. Comparisons are made with the structures of some related compounds.




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In situ deca­rbonylation of N,N-di­methyl­formamide to form di­methyl­ammonium cations in the hybrid framework compound {[(CH3)2NH2]2[Zn{O3PC6H2(OH)2PO3}]}n

The title phospho­nate-based organic–inorganic hybrid framework, poly[bis(dimethylammonium) [(μ4-2,5-dihydroxybenzene-1,4-diphosphonato)zinc(II)]], {(C2H8N)2[Zn(C6H4O8P2)]}n, was formed unexpectedly when di­methyl­ammonium cations were formed from the in situ deca­rbonylation of the N,N-di­methyl­formamide solvent. The framework is built up from ZnO4 tetra­hedra and bridging di­phospho­nate tetra-anions to generate a three-dimensional network comprising [100] channels occupied by the (CH3)2NH2+ cations. Within the channels, an array of N—H⋯O hydrogen bonds help to establish the structure. In addition, intra­molecular O—H⋯O hydrogen bonds between the appended –OH groups of the phenyl ring and adjacent PO32− groups are observed.




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Crystal structure, DFT calculation, Hirshfeld surface analysis and energy framework study of 6-bromo-2-(4-bromo­phen­yl)imidazo[1,2-a]pyridine

The title imidazo[1,2-a] pyridine derivative, C13H8Br2N2, was synthesized via a single-step reaction method. The title mol­ecule is planar, showing a dihedral angle of 0.62 (17)° between the phenyl and the imidazo[1,2-a] pyridine rings. An intra­molecular C—H⋯N hydrogen bond with an S(5) ring motif is present. In the crystal, a short H⋯H contact links adjacent mol­ecules into inversion-related dimers. The dimers are linked in turn by weak C—H⋯π and slipped π–π stacking inter­actions, forming layers parallel to (110). The layers are connected into a three-dimensional network by short Br⋯H contacts. Two-dimensional fingerprint plots and three-dimensional Hirshfeld surface analysis of the inter­molecular contacts reveal that the most important contributions for the crystal packing are from H⋯Br/Br⋯H (26.1%), H⋯H (21.7%), H⋯C/C⋯H (21.3%) and C⋯C (6.5%) inter­actions. Energy framework calculations suggest that the contacts formed between mol­ecules are largely dispersive in nature. Analysis of HOMO–LUMO energies from a DFT calculation reveals the pure π character of the aromatic rings with the highest electron density on the phenyl ring, and σ character of the electron density on the Br atoms. The HOMO–LUMO gap was found to be 4.343 eV.




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Organically pillared layer framework of [Eu(NH2–BDC)(ox)(H3O)]

The non-porous three-dimensional structure of poly[(μ5-2-amino­benzene-1,4-di­carboxyl­ato)(μ6-oxalato)(oxomium)europium(III)], [Eu(C8H5NO4)(C2O4)(H3O)]n or [EuIII(NH2–BDC)(ox)(H3O)]n (NH2–BDC2− = 2-amino­terephthalate and ox2− = oxalate) is constructed from two-dimensional layers of EuIII–carboxyl­ate–oxalate, which are connected by NH2–BDC2− pillars. The basic structural unit of the layer is an edge-sharing dimer of TPRS-{EuIIIO9}, which is assembled through the ox2− moiety. The intra­layer void is partially occupied by TPR-{EuIIIO6} motifs. Weak C—H⋯O and strong, classical intra­molecular N—H⋯O and inter­molecular O—H⋯O hydrogen-bonding inter­actions, as well as weak π–π stacking inter­actions, affix the organic pillars within the framework. The two-dimensional layer can be simplified to a uninodal 4-connected sql/Shubnikov tetra­gonal plane net with point symbol {44.62}.




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Crystal structure of a two-dimensional metal–organic framework assembled from lithium(I) and γ-cyclo­dextrin

The crystal structure of the polymeric title compound, catena-poly[[[di­aqua­lithium]-μ-γ-cyclo­dextrin(1−)-[aqua­lithium]-μ-γ-cyclo­dextrin(1−)] pentadecahydrate], {[Li2(C48H79O40)2(H2O)3]·15H2O}n, consists of deprotonated γ-cyclo­dextrin (CD) mol­ecules assembled by lithium ions into metal–organic ribbons that are cross-linked by multiple O—H⋯O hydrogen bonds into sheets extending parallel to (0overline11). Within a ribbon, one Li+ ion is coordinated by one deprotonated hydroxyl group of the first γ-CD torus and by one hydroxyl group of the second γ-CD torus as well as by two water mol­ecules. The other Li+ ion is coordinated by one deprotonated hydroxyl and by one hydroxyl group of the second γ-CD torus, by one hydroxyl group of the first γ-CD torus as well as by one water mol­ecule. The coordination spheres of both Li+ cations are distorted tetra­hedral. The packing of the structure constitute channels along the a axis. Parts of the hy­droxy­methyl groups in cyclo­dextrin molecules as well as water mol­ecules show two-component disorder. Electron density associated with additional disordered solvent mol­ecules inside the cavities was removed with the SQUEEZE [Spek (2015). Acta Cryst. C71, 9–18] routine in PLATON. These solvent mol­ecules are not considered in the given chemical formula and other crystal data. Five out of the sixteen hy­droxy­methyl groups and one water mol­ecule are disordered over two sets of sites.




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Ni3Te2O2(PO4)2(OH)4, an open-framework structure isotypic with Co3Te2O2(PO4)2(OH)4

Single crystals of Ni3(TeO(OH)2)2(PO4)2, trinickel(II) bis[(oxidodihydoxidotellurate(IV)] bis(phosphate),were obtained by hydro­thermal synthesis at 483 K, starting from NiCO3·2Ni(OH)2, TeO2 and H3PO4 in a molar ratio of 1:2:2. The crystal structure of Ni3Te2O2(PO4)2(OH)4 is isotypic with that of Co3Te2O2(PO4)2(OH)4 [Zimmermann et al. (2011). J. Solid State Chem. 184, 3080–3084]. The asymmetric unit comprises two Ni (site symmetries overline{1}, 2/m) one Te (m), one P (m), five O (three m, two 1) and one H (1) sites. The tellurium(IV) atom shows a coordination number of five, with the corresponding [TeO3(OH)2] polyhedron having a distorted square-pyramidal shape. The two NiII atoms are both octa­hedrally coordinated but form different structural elements: one constitutes chains made up from edge-sharing [NiO6] octa­hedra extending parallel to [010], and the other isolated [NiO2(OH)4] octa­hedra. The two kinds of nickel/oxygen octa­hedra are connected by the [TeO3(OH)2] pyramids and the [PO4] tetra­hedra through edge- and corner-sharing into a three-dimensional framework structure with channels extending parallel to [010]. Hydrogen bonds of medium strength between the hy­droxy groups and one of the phosphate O atoms consolidate the packing. A qu­anti­tative structure comparison between Ni3Te2O2(PO4)2(OH)4 and Co3Te2O2(PO4)2(OH)4 is made.




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Competitive formation between 2D and 3D metal-organic frameworks: insights into the selective formation and lamination of a 2D MOF

The structural dimension of metal–organic frameworks (MOFs) is of great importance in defining their properties and thus applications. In particular, 2D layered MOFs are of considerable interest because of their useful applications, which are facilitated by unique structural features of 2D materials, such as a large number of open active sites and high surface areas. Herein, this work demonstrates a methodology for the selective synthesis of a 2D layered MOF in the presence of the competitive formation of a 3D MOF. The ratio of the reactants, metal ions and organic building blocks used during the reaction is found to be critical for the selective formation of a 2D MOF, and is associated with its chemical composition. In addition, the well defined and uniform micro-sized 2D MOF particles are successfully synthesized in the presence of an ultrasonic dispersion. Moreover, the laminated 2D MOF layers are directly synthesized via a modified bottom-up lamination method, a combination of chemical and physical stimuli, in the presence of surfactant and ultrasonication.




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Extraordinary structural complexity of ilmajokite: a multilevel hierarchical framework structure of natural origin

The crystal structure of ilmajokite, a rare Na-K-Ba-Ce-titanosilicate from the Khibiny mountains, Kola peninsula, Russia, has been solved using single-crystal X-ray diffraction data. The crystal structure is based on a 3D titanosilicate framework consisting of trigonal prismatic titanosilicate (TPTS) clusters centered by Ce3+ in [9]-coordination. Four adjacent TPTS clusters are linked into four-membered rings within the (010) plane and connected via ribbons parallel to 101. The ribbons are organized into layers parallel to (010) and modulated along the a axis with a modulation wavelength of csinβ = 32.91 Å and an amplitude of ∼b/2 = 13.89 Å. The layers are linked by additional silicate tetrahedra. Na+, K+, Ba2+ and H2O groups occur in the framework cavities and have different occupancies and coordination environments. The crystal structure of ilmajokite can be separated into eight hierarchical levels: atoms, coordination polyhedra, TPTS clusters, rings, ribbons, layers, the framework and the whole structure. The information-based analysis allows estimation of the complexity of the structure as 8.468 bits per atom and 11990.129 bits per cell. According to this analysis, ilmajokite is the third-most complex mineral known to date after ewingite and morrisonite, and is the most complex mineral framework structure, comparable in complexity to paulingite-(Ca) (11 590.532 bits per cell).




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PtychoShelves, a versatile high-level framework for high-performance analysis of ptychographic data

Over the past decade, ptychography has been proven to be a robust tool for non-destructive high-resolution quantitative electron, X-ray and optical microscopy. It allows for quantitative reconstruction of the specimen's transmissivity, as well as recovery of the illuminating wavefront. Additionally, various algorithms have been developed to account for systematic errors and improved convergence. With fast ptychographic microscopes and more advanced algorithms, both the complexity of the reconstruction task and the data volume increase significantly. PtychoShelves is a software package which combines high-level modularity for easy and fast changes to the data-processing pipeline, and high-performance computing on CPUs and GPUs.




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The quaternion-based spatial coordinate- and orientation-frame alignment problems

Quaternion methods for obtaining solutions to the problem of finding global rotations that optimally align pairs of corresponding lists of 3D spatial and/or orientation data are critically studied. The existence of multiple literatures and historical contexts is pointed out, and the algebraic solutions of the quaternion approach to the classic 3D spatial problem are emphasized. The treatment is extended to novel quaternion-based solutions to the alignment problems for 4D translation and orientation data.




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Good computer specs (in post) RTX 2070 dropping frames easily in optimized games




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New Report Proposes Framework To Encourage Fluency With Information Technology

The explosive growth of information technology is having a profound impact on our lives.




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Report Offers New Framework to Guide K-12 Science Education, Calls for Shift in the Way Science Is Taught in U.S.

A report released today by the National Research Council presents a new framework for K-12 science education that identifies the key scientific ideas and practices all students should learn by the end of high school.