从废弃生物质中大规模合成石墨烯量子点及其作为银离子高效选择性光致发光开关探针的应用。
Large scale synthesis of graphene quantum dots (GQDs) from waste biomass and their use as an efficient and selective photoluminescence on-off-on probe for Ag(+) ions.
作者信息
Suryawanshi Anil, Biswal Mandakini, Mhamane Dattakumar, Gokhale Rohan, Patil Shankar, Guin Debanjan, Ogale Satishchandra
机构信息
Centre of Excellence in Solar Energy, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411008, India.
出版信息
Nanoscale. 2014 Oct 21;6(20):11664-70. doi: 10.1039/c4nr02494j. Epub 2014 Aug 27.
Graphene quantum dots (GQDs) are synthesized from bio-waste and are further modified to produce amine-terminated GQDs (Am-GQDs) which have higher dispersibility and photoluminescence intensity than those of GQDs. A strong fluorescence quenching of Am-GQDs (switch-off) is observed for a number of metal ions, but only for the Ag(+) ions is the original fluorescence regenerated (switch-on) upon addition of L-cysteine.
石墨烯量子点（GQDs）由生物废料合成，并进一步改性以制备胺基封端的石墨烯量子点（Am-GQDs），其比GQDs具有更高的分散性和光致发光强度。已观察到，多种金属离子会使Am-GQDs发生强烈的荧光猝灭（关闭），但只有加入L-半胱氨酸后，Ag(+)离子才能使原始荧光恢复（开启）。
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