Solvent-dependent switching of graphene oxide (GO) as fluorescence quencher or enhancer was observed. In some solvents, GO increases the fluorescence yield of a hydrophilic molecule 7-(diethylamino)-coumarin-3-carboxylic acid (7-DCA), and in some solvents GO act as a quencher of fluorescence.

中文翻译：

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氧化石墨烯作为荧光增强剂。

观察到氧化石墨烯（GO）作为荧光猝灭剂或增强剂的溶剂依赖性转换。在某些溶剂中，GO可以增加亲水分子7-（二乙氨基）-香豆素-3-羧酸（7-DCA）的荧光产率，在某些溶剂中，GO可以起到荧光猝灭剂的作用。