118978-98-6Relevant articles and documents
A Robust Fungal Allomelanin Mimic: An Antioxidant and Potent π-Electron Donor with Free-Radical Properties that can be Tuned by Ionic Liquids
Manini, Paola,Lino, Valeria,Franchi, Paola,Gentile, Gennaro,Sibillano, Teresa,Giannini, Cinzia,Picardi, Emanuela,Napolitano, Alessandra,Valgimigli, Luca,Chiappe, Cinzia,d'Ischia, Marco
, p. 1331 - 1337 (2019)
Developing effective strategies to increase the chemical stability and to fine-tune the physico-chemical properties of melanin biopolymers by rational control of π-electron conjugation is an important goal in materials science for biomedical and technological applications. Herein we report that poly-1,8-dihydroxynaphthalene (pDHN), a non-nitrogenous, catechol-free fungal melanin mimic, displays a high degree of structural integrity (from MALDI-MS and CP/MAS 13C NMR analysis), a strong radical scavenging capacity (DPPH and FRAP assays), and an unusually intense EPR signal (g=2.0030). Morphological and spectral characterization of pDHN, along with deassembly experiments in ionic liquids, indicated amorphous aggregates of small globular structures with an estimated stacking distance of 3.9 ? and broadband absorption throughout the visible range. These results indicate that DHN-based melanins exhibit a high structural integrity and enhanced antioxidant and free-radical properties of potentially greater biomedical and technological relevance than for typical indole-based eumelanins.
Ionic liquid-based humidifying material for air conditioner
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Paragraph 0021; 0031-0035, (2021/01/04)
The invention discloses an ionic liquid-based humidifying material for an air conditioner. The humidifying material contains an ionic liquid containing oxygen ions shown in a general formula 1 and anions shown in a general formula 2, or an ionic liquid composed of cations and anions shown in a general formula 3. The ionic liquid is synthesized by causing trialkyl phosphate to act on 2-N, N-dimethyl aminoethanol and converting the 2-N, N-dimethyl aminoethanol into oniums. The ionic liquid provided by the invention has the characteristics of good hygroscopicity, no toxicity, less metal corrosivity (especially copper, stainless steel, aluminum and the like which are generally used in heat exchangers such as air conditioners) and no odor, and in the synthesis process of the ionic liquid, thereis only the need to mix 2-N, N-dimethyl aminoethanol and trimethyl phosphate in the absence of a solvent, the reaction is very easy to carry out, so that the ionic liquid can be extremely simply synthesized. The material is suitable for being used as a humidifying material used in a liquid air conditioner or an absorption refrigerator.