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991.
Xuan Mu Constancio Gonzalez-Obeso Zhiyu Xia Jugal Kishore Sahoo Gang Li Peggy Cebe Yu Shrike Zhang David L. Kaplan 《Molecules (Basel, Switzerland)》2022,27(7)
Silk fibroin, regenerated from Bombyx mori, has shown considerable promise as a printable, aqueous-based ink using a bioinspired salt-bath system in our previous work. Here, we further developed and characterized silk fibroin inks that exhibit concentration-dependent fluorescence spectra at the molecular level. These insights supported extrusion-based 3D printing using concentrated silk fibroin solutions as printing inks. 3D monolithic proteinaceous structures with high aspect ratios were successfully printed using these approaches, including cantilevers only supported at one end. This work provides further insight and broadens the utility of 3D printing with silk fibroin inks for the microfabrication of proteinaceous structures. 相似文献
992.
Kishor Mazumder Asma Aktar Priyanka Roy Biswajit Biswas Md. Emran Hossain Kishore Kumar Sarkar Sitesh Chandra Bachar Firoj Ahmed A. S. M. Monjur-Al-Hossain Koichi Fukase 《Molecules (Basel, Switzerland)》2022,27(9)
Cancer is a disorder that rigorously affects the human population worldwide. There is a steady demand for new remedies to both treat and prevent this life-threatening sickness due to toxicities, drug resistance and therapeutic failures in current conventional therapies. Researchers around the world are drawing their attention towards compounds of natural origin. For decades, human beings have been using the flora of the world as a source of cancer chemotherapeutic agents. Currently, clinically approved anticancer compounds are vincristine, vinblastine, taxanes, and podophyllotoxin, all of which come from natural sources. With the triumph of these compounds that have been developed into staple drug products for most cancer therapies, new technologies are now appearing to search for novel biomolecules with anticancer activities. Ellipticine, camptothecin, combretastatin, curcumin, homoharringtonine and others are plant derived bioactive phytocompounds with potential anticancer properties. Researchers have improved the field further through the use of advanced analytical chemistry and computational tools of analysis. The investigation of new strategies for administration such as nanotechnology may enable the development of the phytocompounds as drug products. These technologies have enhanced the anticancer potential of plant-derived drugs with the aim of site-directed drug delivery, enhanced bioavailability, and reduced toxicity. This review discusses mechanistic insights into anticancer compounds of natural origins and their structural activity relationships that make them targets for anticancer treatments. 相似文献
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995.
Priyabrata Sahoo Bikesh Gupta Ramesh Chandra Sahoo Dr. Kiran Vankayala Dr. H. S. S. Ramakrishna Matte 《Chemistry (Weinheim an der Bergstrasse, Germany)》2021,27(44):11326-11334
Solution processing of nanomaterials is a promising technique for use in various applications owing to its simplicity and scalability. However, the studies on liquid-phase exfoliation (LPE) of tungsten oxide (WO3) are limited, unlike others, by a lack of commercial availability of bulk WO3 with layered structures. Herein, a one-step topochemical synthesis approach to obtain bulk layered WO3 from commercially available layered tungsten disulfide (WS2) by optimizing various parameters like reaction time and temperature is reported. Detailed microscopic and spectroscopic techniques confirmed the conversion process. Further, LPE was carried out on topochemically converted bulk layered WO3 in 22 different solvents; among the solvents studied, the propan-2-ol/water (1 : 1) co-solvent system appeared to be the best. This indicates that the possible values of surface tension and Hansen solubility parameters for bulk WO3 could be close to that of the co-solvent system. The obtained WO3 dispersions in a low-boiling-point solvent enable thin films of various thickness to be fabricated by using spray coating. The obtained thin films were used as active materials in supercapacitors without any conductive additives/binders and exhibited an areal capacitance of 31.7 mF cm−2 at 5 mV s−1. Photo-electrochemical measurements revealed that these thin films can also be used as photoanodes for photo-electrochemical water oxidation. 相似文献
996.
Shubham Dutta Shengwen Yang Rajeshwer Vanjari Rajendra K. Mallick Vincent Gandon Prof. Dr. Akhila K. Sahoo 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2020,132(27):10877-10882
A three-component Pd-catalyzed coupling of ynamides, aryl diazonium salts, and aryl boronic acids for the synthesis of novel triaryl-substituted enamides is described. This transformation represents the first example of an umpolung regioselective unsymmetrical syn-1,2-diarylation/aryl-olefination of ynamides. The aryl moieties of the diazonium salt (electrophile) and boronic acid (nucleophile) are explicitly incorporated in the electrophilic α- and nucleophilic β-position, respectively, of the ynamide, resulting in a single isomer of the N-bearing tetrasubstituted olefin. The scope is broad (68 examples), showing excellent functional-group tolerance. DFT calculations substantiate the rationale of the mechanistic cycle and the regioselectivity. The chemoselectivity and synthetic potential of the enamide products were also studied. 相似文献
997.
Youdong Cheng Sai Kishore Ravi Yuxiang Wang Jifang Tao Yuandong Gu Swee Ching Tan Dan Zhao 《中国化学快报》2018,29(6):869-872
Four chemically stable covalent organic nanosheets are successfully synthesized at the air-water interface with large later size and tunable hydrophobicity, with potential applications as functional coating and membrane materials. 相似文献
998.
Paul Sabyasachi Joshi D. S. Shanbhag A. A. Sahoo G. S. Tripathy S. P. Sharma S. C. Suman V. Biju K. Bandyopadhyay T. Kulkarni M. S. 《Journal of Radioanalytical and Nuclear Chemistry》2020,323(3):1299-1306
Journal of Radioanalytical and Nuclear Chemistry - Presently accelerator facilities emphasizes on generating charged particles with enhanced energy and flux. The radiation protection practices at... 相似文献
999.
Yugal Kishore Mohanta Abeer Hashem Elsayed Fathi Abd_Allah Santosh Kumar Jena Tapan Kumar Mohanta 《应用有机金属化学》2020,34(9):e5810
In the present scenario, metal nanoparticles have elicited a great deal of interest in biomedical applications because of their unique properties and antimicrobial potentials. Over the past few years, the green nanotechnology has materialized as a momentous approach for the synthesis and fabrication of noble metal salt and metal nanoparticles. The green route synthesis exploits diverse reducing and stabilizing agents from bacterial resources for the successful synthesis of metal nanoparticles. This review mainly focuses on the biosynthesis of the most commonly studied metal and metal salt nanoparticles such as gold, silver, platinum, palladium, copper, cadmium, titanium oxide, zinc oxide, zinc sulphate, cadmium sulphide and many more. These noble nanoparticles can be exploited in pharmaceutical industry as antimicrobial and anti-biofilm agents, targeted delivery of anticancer drugs, biosensors, etc. 相似文献
1000.
Khelkar Ashish Babarao Debnath Biplab Kumar Debnath Kishore 《Journal of Thermal Analysis and Calorimetry》2020,141(6):2589-2597
Journal of Thermal Analysis and Calorimetry - In this work, the primary objective is to develop a sinusoidal wave profile at the inner surface of an absorber tube, study with different working... 相似文献