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dc.contributor.authorHong, Jinqing
dc.contributor.authorPei, Dejun
dc.contributor.authorGuo, Xiangqun
dc.contributor.author郭祥群
dc.date.accessioned2013-01-18T02:44:28Z
dc.date.available2013-01-18T02:44:28Z
dc.date.issued2012-09-15
dc.identifier.citationTALANTA,2012(99):939-943zh_CN
dc.identifier.issn0039-9140
dc.identifier.urihttp://dx.doi.org/10.1016/j.talanta.2012.07.062
dc.identifier.uriWOS:000309785300133
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/14592
dc.description.abstractWe report a conjugate of thioglycolic acid (TGA) capped CdTe quantum dot and Eu3+ ion (TGA-CdTe QD-Eu3+) that can be used as an ultrasensitive luminescence turn-on sensor for nucleoside triphosphates (NTPs). The TGA-CdTe QD-Eu3+ conjugate is a weakly luminescent species as a result of the strong quenching effect of Eu3+ ion on the luminescence of TGA-CdTe QDs. The conjugate's luminescence can be readily restored by its reaction with adenosine triphosphate (ATP) and other NTPs, and thus gives an ultrasensitive detection of NTPs, with a detection limit of 2 nM. The sensing mechanism has also been explored, and the effective quenching of TGA-CdTe QDs emission by Eu3+ ions has been attributed to photoinduced electron transfer (PET). ATP, as the representative of NTP's, can remove Eu3+ from the surface of TGA-CdTe QDs, leading to restoration of the TGA-CdTe QDs luminescence. (C) 2012 Elsevier B.V. All rights reserved.zh_CN
dc.description.sponsorshipMinistry of Science and Technology of China [2011CB910403]; National Natural Science Foundation of China [20835005, 20975086, J1030415]zh_CN
dc.language.isoenzh_CN
dc.publisherELSEVIER SCIENCE BVzh_CN
dc.subjectCdTe quantum dots;zh_CN
dc.subjectNucleoside triphosphateszh_CN
dc.subjectATPzh_CN
dc.subjectFluorescent sensorzh_CN
dc.titleQuantum dot-Eu3+ conjugate as a luminescence turn-on sensor for ultrasensitive detection of nucleoside triphosphateszh_CN
dc.typeArticlezh_CN


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