TY - JOUR
T1 - Fluorescent mesoporous silica nanoparticles functionalized graphene oxide
T2 - A facile FRET-based ratiometric probe for Hg2+
AU - Zhang, Haixia
AU - Tong, Cuiyan
AU - Sha, Jie
AU - Liu, Bingxin
AU - Lü, Changli
N1 - Funding Information:
We would like to appreciate the financial support of the National Natural Science Foundation of China ( 21074019 ) and Natural Science Foundation of Jilin Province ( 20101539 ).
Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.
PY - 2015/1
Y1 - 2015/1
N2 - This paper reported a facile method for fabricating a functionalized fluorescent graphene oxide (GO) by covalently grafting the amine-modified mesoporous silica nanoparticles (MSNs) containing poly(p-phenylenevinylene) (PPV) and lactam of Rhodamine 6G (SRh6G) inside the channel of MSNs. The resulted GO-PPV@MSN-NH2@SRh6G fluorescent hybrid nanoparticles had a good dispersion and strong green fluorescence in aqueous solution. This hybrid material can be used as a fluorescent ratiometric probe to detect Hg2+ in the water through fluorescence resonance energy transfer (FRET). Upon the addition of only Hg2+ ions, the mission corresponding to the ring-opened form of rhodamine appeared at 550 nm with a simultaneous emission quenching of PPV at 494 nm. This ratiometric fluorescence change indicated that an FRET from the PPV to rhodamine was triggered by Hg2+ ions. The hybrid nanoparticles of GO-PPV@MSN-NH2@SRh6G could be used as a novel fluorescent probe to carry out the quantitative detection of Hg2+ with a detection limit of 7.1 × 10-8 M.
AB - This paper reported a facile method for fabricating a functionalized fluorescent graphene oxide (GO) by covalently grafting the amine-modified mesoporous silica nanoparticles (MSNs) containing poly(p-phenylenevinylene) (PPV) and lactam of Rhodamine 6G (SRh6G) inside the channel of MSNs. The resulted GO-PPV@MSN-NH2@SRh6G fluorescent hybrid nanoparticles had a good dispersion and strong green fluorescence in aqueous solution. This hybrid material can be used as a fluorescent ratiometric probe to detect Hg2+ in the water through fluorescence resonance energy transfer (FRET). Upon the addition of only Hg2+ ions, the mission corresponding to the ring-opened form of rhodamine appeared at 550 nm with a simultaneous emission quenching of PPV at 494 nm. This ratiometric fluorescence change indicated that an FRET from the PPV to rhodamine was triggered by Hg2+ ions. The hybrid nanoparticles of GO-PPV@MSN-NH2@SRh6G could be used as a novel fluorescent probe to carry out the quantitative detection of Hg2+ with a detection limit of 7.1 × 10-8 M.
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U2 - 10.1016/j.snb.2014.09.051
DO - 10.1016/j.snb.2014.09.051
M3 - Article
AN - SCOPUS:84907903427
SN - 0925-4005
VL - 206
SP - 181
EP - 189
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
ER -