methylamine

[ meth-uh-luh-meen, -uhl-am-in ]

noun

, Chemistry.

1. any of three derivatives of ammonia in which one or all of the hydrogen atoms are replaced by methyl groups, especially a gas, CH 5 N, with an ammonialike odor, the simplest alkyl derivative of ammonia and, like the latter, forming a series of salts.

methylamine

/ miːˈθaɪləˌmiːn /

noun

1. a colourless flammable water-soluble gas, used in the manufacture of herbicides, dyes, and drugs. Formula: CH 3 NH 2

methylamine

/ mĕth′ə-lə-mēn′,-lăm′ēn,mə-thĭl′ə-mēn′ /

1. A toxic, flammable gas produced naturally by the decomposition of organic matter and also made synthetically. It is used as a solvent and in the manufacture of many products, such as dyes and insecticides. Chemical formula: CH 5 N.

Word History and Origins

Origin of methylamine¹

First recorded in 1840–50; methyl- + amine

Example Sentences

When warmed, the methylamine vaporizes and breaks away from the perovskite, causing the latter to darken and absorb sunlight.

From Science Magazine

When the heat dissipates, either when the sun goes down or during the winter, the methylamine vapor moves back into the perovskite, turning it transparent once again.

From Science Magazine

Today, Yang reports in Nature Materials that his team has created a cesium-based perovskite solar window that turns opaque and produces electricity when heated, but without methylamine.

From Science Magazine

The first advance in combining all these features came in November 2017, when researchers reported they had created a lead-based perovskite solar window that switched from transparent to opaque when the temperature hit 60°C. At cooler temperatures, the perovskite in the center of the solar cell forms a complex with an organic compound called methylamine.

From Science Magazine

The biggest is that the efficiency of the solar cells drops after only a few times switching back and forth, probably because the methylamine fails to fully return the perovskite to its starting crystalline arrangement.

From Science Magazine