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Drug delivery using biocompatible covalent organic frameworks (COFs) towards a therapeutic approach
Chem Commun (Camb). 2023 Sep 19. doi: 10.1039/d3cc01829f. Online ahead of print.ABSTRACTCovalent organic frameworks (COFs) are constructed exclusively with lightweight organic scaffolds, which can have a 2D or 3D architecture. The ease of synthesis, robust skeleton and tunable properties of COFs make them superior candidates among their counterparts for a wide range of uses including biomedical applications. In the biomedical field, drug delivery or photodynamic-photothermal (PDT-PTT) therapy can be individually considered a potential parameter to be investigated. Therefore, this comprehensive review is focused on drug del...
Source: Chemical Communications - September 19, 2023 Category: Chemistry Authors: Pritam Ghosh Priyabrata Banerjee Source Type: research
Supramolecular interface decoration on a polymer conductor for an intrinsically stretchable near-infrared photodiode
Chem Commun (Camb). 2023 Sep 19. doi: 10.1039/d3cc04189a. Online ahead of print.ABSTRACTStretchable photodiodes with near-infrared (NIR) response face the challenge of material deficiency. A supramolecular cathode with excellent optical, tensile and electrical properties was proposed. Together with a stretchable organic heterojunction, we developed an intrinsically stretchable NIR photodiode with high detectivity over 1011 Jones and that remained functional under 100% strain.PMID:37724429 | DOI:10.1039/d3cc04189a
Source: Chemical Communications - September 19, 2023 Category: Chemistry Authors: Fan Chen Yiming Li Yan Chen Yi-Xuan Wang Wenping Hu Source Type: research
The glass transition in the high-density amorphous Zn/Co-ZIF-4
Chem Commun (Camb). 2023 Sep 19. doi: 10.1039/d3cc02492j. Online ahead of print.ABSTRACTThe high-density amorphous phases (HDAs) of bimetallic zeolitic imidazolate frameworks (Zn/Co-ZIF-4) were prepared. The temperature dependence of the isobaric heat capacity (Cp) of ZIF-4 HDAs was measured to determine the glass transition temperature (Tg) of HDAs. The Tg non-linearly decreases with the molar ratio R, where R is Co/(Co + Zn), indicating the presence of a mixed-metal node effect. This effect arises from the non-linear increase of the degree of configurational freedom in the HDA as R increases. The degree of configurationa...
Source: Chemical Communications - September 19, 2023 Category: Chemistry Authors: Zijuan Du Ang Qiao Hemin Zhou Zhencai Li Wessel M W Winters Jiexin Zhu Guanjie He Ivan P Parkin Haizheng Tao Yuanzheng Yue Source Type: research
Evaluation of the lead and chromium removal capabilities of Bacillus subtilis-induced food waste compost-based biomedia
Chemosphere. 2023 Sep 17:140186. doi: 10.1016/j.chemosphere.2023.140186. Online ahead of print.ABSTRACTFood waste compost (FWC) is a sustainable recycling approach employed in soil media, offering extensive advantages to urban areas by promoting resource circulation and effectively managing water pollution. To improve value, Bacillus subtilis (B. subtilis)-induced FWC-based biomedia (BIBMFWCs) were produced via a secondary treatment involving selective meso-thermophilic stages. During the production of BIBMFWCs, physicochemical properties were found to have favorable characteristics for the efficient removal of metal ions....
Source: Chemosphere - September 19, 2023 Category: Chemistry Authors: Chang Hyuk Ahn Woosik Jung Yoonkyung Park Jin Chul Joo Kyoungphile Nam Source Type: research
Effects of ferrous sulfate modification on the fate of phosphorous in sewage sludge biochar and its releasing mechanisms in heavy metal contaminated soils
Environ Sci Pollut Res Int. 2023 Sep 19. doi: 10.1007/s11356-023-29867-x. Online ahead of print.ABSTRACTModifications of sludge biochar with metal-based materials can enhance its fertilizing efficiency and improve safety. To elucidate the effects of ferrous sulfate modification on the fate of phosphorus in sludge biochar and its effect on phosphorus fractionation in soil, we investigated the changes in fractionation and bioavailability of phosphorus in modified sludge biochar and studied the changes in soil characteristics, microbial diversity and response, bioavailability, plant uptake of phosphorus, and heavy metals in c...
Source: Environmental Science and Pollution Research International - September 19, 2023 Category: Environmental Health Authors: Aikelaimu Aihemaiti Shuoyang Liang Yingying Cai Rui Li Feng Yan Zuotai Zhang Source Type: research
Characteristics of dissolved organic matter in point-source wastewaters at a petrochemical plant: Molecular constituents and contributions to the influent of wastewater treatment plant
In this study, DOM in three low-salinity point-source PCWs and four high-salinity point-source PCWs at a typical petrochemical plant were comprehensively characterized at a molecular level. Orbitrap mass spectrometry results indicated that point-source PCWs had diverse DOM constituents tightly related to the corresponding petrochemical processes. Phenols in oily wastewaters (OW), phenols and N-containing compounds in coal partial oxidation wastewater (POXW), and naphthenic acids (NAs) and aromatic acids in crude oil electric desalting unit wastewater (EDW) were characteristic DOM constituents for low-salinity point-source ...
Source: Environmental Research - September 19, 2023 Category: Environmental Health Authors: Yue Kou Baiyu Yang Juntao Jiang He Sun Rui Zhang Zhuoyu Li Qinghong Wang Quan Shi Chunmao Chen Source Type: research
Color-Tunable Dual-Mode Organic Afterglow for White-Light Emission and Information Encryption Based on Carbazole Doping
In this study, a carbazole-based host-guest system that can be activated by both ultraviolet (UV) and visible light is reported to achieve balanced phosphorescence and delayed fluorescence, resulting in a long-lived white-light afterglow. Our study demonstrated the critical role of a charge transfer state in the afterglow mechanism, where the charge separation and recombination process directly determined the lifetime of afterglow. Simultaneously, an efficient reversed intersystem crossing process was obtained between the singlet and triplet charge transfer states, which further boosted the delayed fluorescence properties ...
Source: Angewandte Chemie - September 19, 2023 Category: Chemistry Authors: Xianhe Zhang Kok Chan Chong Zongliang Xie Bin Liu Source Type: research
Anti-Stokes Luminescence in Multi-Resonance-Type Thermally-Activated Delayed Fluorescence Molecules
Angew Chem Int Ed Engl. 2023 Sep 19:e202312326. doi: 10.1002/anie.202312326. Online ahead of print.ABSTRACTPhoton-upconversion in organic molecular systems is one of the promising technologies for future energy harvesting systems because these systems can generate excitons that possess higher energy than excitation energy. The photon-upconversion caused by absorbing ambient heat as additional energy is particularly interesting because it could ideally provide a light-driving cooling system. However, only a few organic molecular systems have been reported. Here, we report the anti-Stokes photoluminescence (ASPL) derived fro...
Source: Angewandte Chemie - September 19, 2023 Category: Chemistry Authors: Shintaro Kohata Hajime Nakanotani Youhei Chitose Takuma Yasuda Youichi Tsuchiya Chihaya Adachi Source Type: research
Nanosheet-Assembled Zirconium-Porphyrin Frameworks Enabling Surface-Confined, Initiator-Free Photosynthesis of Ultrahigh Molecular Weight Polymers
We present here the controlled synthesis of a novel class of hierarchical zirconium-porphyrin frameworks (ZrPHPs) with nanosheet-assembled hexagonal prism morphology. The crystal growth behaviors and structural evolution of ZrPHPs in an additive-modulated hydrothermal synthesis are examined, showing an "assembly-hydrolysis-reassembly" mechanism towards the formation of 2D nanosheets with ordered arrangement. Because of the highly-accessible active sites harvesting broadband photons, ZrPHPs serve as adaptable photocatalysts to regulate macromolecular synthesis under full-range visible light and natural sunlight. An initiato...
Source: Angewandte Chemie - September 19, 2023 Category: Chemistry Authors: Qiang Gao Wei Wang Jingbo Du Zeyu Liu Yiyun Geng Xiaojun Ding Yifei Chen Jing Chen Gang Ye Source Type: research
Hydrogen-Bonded Organic Framework to Upgrade Cycling Stability and Rate Capability of Li-CO2 Batteries
Angew Chem Int Ed Engl. 2023 Sep 19:e202311480. doi: 10.1002/anie.202311480. Online ahead of print.ABSTRACTElaborately designed multifunctional electrocatalysts capable of promoting Li+ and CO2 transport are essential for upgrading the cycling stability and rate capability of Li-CO2 batteries. Hydrogen-bonded organic frameworks (HOFs) with open channels and easily functionalized surfaces hold great potential for applications in efficient cathodes of Li-CO2 batteries. Herein, a robust HOFS (HOF-FJU-1) is introduced for the first time as a co-catalyst in the cathode material of Li-CO2 batteries. HOF-FJU-1 with cyano groups l...
Source: Angewandte Chemie - September 19, 2023 Category: Chemistry Authors: Zhibin Cheng Yanlong Fang Yisi Yang Hao Zhang Zhiwen Fan Jindan Zhang Shengchang Xiang Banglin Chen Zhangjing Zhang Source Type: research
Metal-Free Electrocatalytic Diacetoxylation of Alkenes
Angew Chem Int Ed Engl. 2023 Sep 19:e202311539. doi: 10.1002/anie.202311539. Online ahead of print.ABSTRACT1,2-Dioxygenation of alkenes leads to a structural motif ubiquitous in organic synthons, natural products and active pharmaceutical ingredients. Straightforward and green synthesis protocols starting from abundant raw materials are required for facile and sustainable access to these crucial moieties. Especially industrially abundant aliphatic alkenes have proven to be arduous substrates in sustainable 1,2-dioxygenation methods. Here, we report a highly efficient electrocatalytic diacetoxylation of alkenes under ambien...
Source: Angewandte Chemie - September 19, 2023 Category: Chemistry Authors: Jef R Vanhoof Pieter J De Smedt Jan Derhaeg Rob Ameloot Dirk De Vos Source Type: research
Frontier Molecular Orbital Engineering: Constructing Highly Efficient Narrowband Organic Electroluminescent Materials
Angew Chem Int Ed Engl. 2023 Sep 19:e202312451. doi: 10.1002/anie.202312451. Online ahead of print.ABSTRACTIt is of great strategic significance to develop highly efficient narrowband organic electroluminescent materials that can be utilized to manufacture ultra-high-definition (UHD) displays and meet or approach the requirements of Broadcast Television 2020 (B.T.2020) color gamut standards. This motif poses challenges for molecular design and synthesis, especially for developing generality, diversity, scalability, and robustness of molecular structures. The emergence of multiple resonance thermally activated delayed fluor...
Source: Angewandte Chemie - September 19, 2023 Category: Chemistry Authors: Yincai Xu Qingyang Wang Xinliang Cai Chenglong Li Shimei Jiang Yue Wang Source Type: research
Enantioselective De Novo Synthesis of α,α-Diaryl Ketones from Alkynes
Angew Chem Int Ed Engl. 2023 Sep 19:e202310078. doi: 10.1002/anie.202310078. Online ahead of print.ABSTRACTChiral α,α-diaryl ketones are structural motifs commonly present in bioactive molecules, and they are also valuable building blocks in synthetic organic chemistry. However, catalytic asymmetric synthesis of α,α-diaryl ketones bearing a tertiary stereogenic center remains largely unsolved. Herein, we report a catalytic de novo enantioselective synthesis of α,α-diaryl ketones from simple alkynes via chiral phosphoric acid (CPA) catalysis. A broad range of enolizable α,α-diaryl ketones are prepared in good yields...
Source: Angewandte Chemie - September 19, 2023 Category: Chemistry Authors: Xueting Zhou Qingqin Huang Jiami Guo Lei Dai Yixin Lu Source Type: research
A Unified Determinant-Preserving Formulation for Compressible/Incompressible Finite Viscoelasticity
J Mech Phys Solids. 2023 Aug;177:105312. doi: 10.1016/j.jmps.2023.105312. Epub 2023 May 19.ABSTRACTThis paper presents a formulation alongside a numerical solution algorithm to describe the mechanical response of bodies made of a large class of viscoelastic materials undergoing arbitrary quasistatic finite deformations. With the objective of having a unified formulation that applies to a wide range of highly compressible, nearly incompressible, and fully incompressible soft organic materials in a numerically tractable manner, the viscoelasticity is described within a Lagrangian setting by a two-potential mixed formulation....
Source: Journal of the Mechanics and Physics of Solids - September 19, 2023 Category: Physics Authors: Ignasius P A Wijaya Oscar Lopez-Pamies Arif Masud Source Type: research
