The reaction of 1,1-di(methylsulfanyl)-2-nitroethylene, benzyl alcohols, and sodium hydride furnishes crystalline triarylmethyl ortho esters of nitroacetic acid.
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An albumin unfolding and refolding cycle induced by a time-controlled pH jump.
Org Biomol Chem
December 2024
Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy.
Article Synopsis
- The study explores how controlling the unfolding and refolding of proteins can impact their functions, with potential applications in areas like drug release and protein-based devices.
- It demonstrates a method using albumin, a common protein, where the addition of nitroacetic acid induces a controlled change in the protein's structure by altering pH levels through a chemical reaction.
- The results show that this process is reversible and that the protein can fully return to its original structure, highlighting a novel way to manipulate protein behaviors in a time-efficient manner.
Dissipative operation of pH-responsive DNA-based nanodevices.
Chem Sci
September 2021
Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata Via della Ricerca Scientifica 00133 Roma Italy
We demonstrate here the use of 2-(4-chlorophenyl)-2-cyanopropanoic acid (CPA) and nitroacetic acid (NAA) as convenient chemical fuels to drive the dissipative operation of DNA-based nanodevices. Addition of either of the fuel acids to a water solution initially causes a rapid transient pH decrease, which is then followed by a slower pH increase. We have employed such low-to-high pH cycles to control in a dissipative way the operation of two model DNA-based nanodevices: a DNA nanoswitch undergoing time-programmable open-close-open cycles of motion, and a DNA-based receptor able to release-uptake a DNA cargo strand.
View Article and Find Full Text PDFIn this report it is shown that nitroacetic acid (ONCHCOH) can be conveniently used to control the pH of a water solution over time. Time-programmable sequences of the kind pH-pH-pH can be achieved, where both the extent of the initial pH jump (pH-pH) and the time required for the subsequent pH rising (pH-pH) can be predictably controlled by a judicious choice of the absolute and relative concentrations of the reagents (acid and NaOH). Successive pH-pH-pH sequences can be obtained by subsequent additions of acid .
View Article and Find Full Text PDFA comprehensive study on the application of FeNi@SiO@ZnO magnetic nanocomposites as a novel photo-catalyst for degradation of tamoxifen in the presence of simulated sunlight.
Environ Pollut
June 2020
Social Determinants of Health Research Center, Birjand University of Medical Sciences, Birjand, Iran. Electronic address:
Pharmaceutical compounds at trace concentrations are found in the environment, especially in drinking water and food, posing significant negative effects on humans as well as on animals. This paper aimed to examine the diagnostic catalytic properties and efficacy of a novel synthesized photocatalyst, namely FeNi@SiO@ZnO magnetic nanocomposite, for the removal of tamoxifen (TMX) from wastewater under simulated sunlight. According to the results, it was found that TMX was completely degraded operating under optimized conditions (i.
View Article and Find Full Text PDFEvaluation of nitriloacetic acid modified cellulose film on adsorption of methylene blue.
Int J Biol Macromol
July 2018
Shandong Provincial Key Laboratory of Fine Chemicals, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
A novel composite film (MCαN) based on microcrystalline cellulose (MCC) and nitrilotriacetic acid anhydride (NTAA) was prepared via casting method for the adsorption of methylene blue (MB) from aqueous solution. FT-IR, XRD, elemental analysis and TGA analysis demonstrated the success of modification. The swelling behavior, mechanical properties and MB adsorption performance of the modified MCαN films were improved obviously.
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