A reversible fluorescence nanoswitch based on carbon quantum dots nanoassembly for detection of pyrophosphate ion
作者： Lu Jing Chai , Jin Zhou , Hui Feng , Jing Jing Lin , Zhao Sheng Qian
DOI: 10.1016/J.SNB.2015.05.070
关键词:
摘要: A convenient and reversible nanoswitch with the assistance of cerium ions based on aggregation disaggregation carbon quantum dots was developed to achieve highly sensitive detection pyrophosphate ions. Two states including state corresponding fluorescence off signaling can be readily switched in a way. The is resulted from large nanoassembly formed by due their strong complexation affinity. comes competitive combination between ion ion. PPi severs as external chemical stimulus CQDs/Ce(III) nanoassembly, its quantity responsive intensity sensing system. Quantitative evaluation broad range 0.3 29.7 mu M limit 0.1 realized this human HeLa cells also assessed, switching ON OFF observed response presence absence PPi. (C) 2015 Elsevier B.V. All rights reserved.
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