Directional coupling in spatially distributed nanoreactors

Das, Nirmali Prabha; Dobó, Dorina Gabriella; Berkesi, Dániel; Kukovecz, Ákos; Horváth, Dezsö; Tóth, Ágota

doi:10.1039/c9ra09758a

Cited by 1 publication

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References 40 publications

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“…On the other hand, amines are compounds whose controlled release is the desired process in many applications. For example, the on‐demand release of amines from their “hidden” forms can be used to trigger polymerization, [23] autocatalytic reactions [24] and photoactivated syntheses, [25] some catalytic processes, [26] as well as in the study of drug delivery systems [27] …”

Section: Introductionmentioning

confidence: 99%

Thermoreversible Transformations of the Cyanosubstituted 2‐Oxopyrrole Derivative by the Action of Amines for the Creation of Novel High‐Contrast Coloration/Decoloration Systems

Yu. Belikov,

Milovidova,

Yu. Ievlev

2024

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A new efficient approach to the synthesis of intensely colored 2‐(2‐oxo‐3H‐pyrrol‐3‐ylidene)malononitrile (OP) was developed. Using the reaction of OP with amines, a series of previously unknown colorless organic salts – dicyano(2‐oxo‐2,5‐dihydro‐1H‐pyrrol‐3‐yl)methanides were synthesized, bearing in the structure two fragments of same or diverse amines of different nature (covalent and ionic). TGA‐DTA study of the synthesized salts showed a thermal reversibility of their formation. The introduction of violet OP into paper followed by treatment with amine vapors revealed prospects of using such a system for naked‐eye detection of volatile amines. It was also shown that OP‐based rewritable paper can be created, to which a data can be applied by local heating and erased by the action of amine or temperature.

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