Control of pyrene fluorescence intensity by in situ addition of CO2 to an amidine/amine mixture or CO2 removal from an amidinium carbamate ionic liquid

被引：12

作者：

Abraham, Shibu ^{[1
]}

Weiss, Richard G. ^{[1
]}

机构：

[1] Georgetown Univ, Dept Chem, Washington, DC 20057 USA

来源：

PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES | 2012年 / 11卷 / 11期

基金：

美国国家科学基金会;

关键词：

CHEMICALLY REVERSIBLE ORGANOGELS; ALIPHATIC-AMINES; LATENT GELATORS; CARBON-DIOXIDE; TEMPERATURE; BEHAVIOR; PHOTOLYSIS; PY;

D O I：

10.1039/c1pp05312d

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Addition of CO2 to an equimolar amidine/amine mixture leads to formation of a switchable ionic liquid, an amidinium carbamate, and appearance of strong fluorescence by a solute, pyrene. Passing a 'displacement gas', N-2, through the ionic liquid or heating it regenerates the amidine/amine mixture and quenches the fluorescence almost totally. No switching or appreciable fluorescence is found when an amidinium dithiocarbamate is the medium.

引用

页码：1642 / 1644

页数：3

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