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자연과학대학
화학·나노과학전공
Journal papers
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Stable carbamate pathway towards organic-inorganic hybrid perovskites and aromatic imines
Title
Stable carbamate pathway towards organic-inorganic hybrid perovskites and aromatic imines
Authors
Lee K.H.
;
Kim S.J.
;
Park H.S.
;
Lim B.W.
;
Lee B.
;
Park Y.J.
;
Nam W.
;
Hur N.H.
Ewha Authors
남원우
SCOPUS Author ID
남원우
Issue Date
2020
Journal Title
RSC Advances
ISSN
2046-2069
Citation
RSC Advances vol. 10, no. 62, pp. 38055 - 38062
Publisher
Royal Society of Chemistry
Indexed
SCIE; SCOPUS
Document Type
Article
Abstract
Methyl ammonium methyl carbamate (MAC), formulated as CH3NH3+CH3NHCO2-, was synthesized by reacting liquid methylamine with supercritical CO2, and its structure was refined by single-crystal X-ray diffraction. MAC is a white crystalline salt and is as reactive as methylamine, and is a very efficient alternative to toxic methylamine. We were able to produce hybrid perovskite MAPbI3 (MA = methyl ammonium) by grinding MAC with PbI2 and I2 at room temperature, followed by storing the mixed powder. Moreover, this one-pot method is easily scalable for the large-scale synthesis of MAPbI3 in a small vessel. We have also investigated the reactivity of MAC towards aromatic aldehydes in the absence of solvent. The solventless reactions afforded imines as exclusive products with over 97% yield, which show higher selectivity than the methylamine-based synthesis. Complete conversions were typically accomplished within 3 h at 25 °C. The results of this study emphasize the importance of solid carbamates such as MAC to develop an environmentally friendly process for the synthesis of various amine-based materials on the industrial scale. © The Royal Society of Chemistry.
DOI
10.1039/d0ra07814j
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