Fluorescent mesoporous silica nanoparticles functionalized graphene oxide: A facile FRET-based ratiometric probe for Hg2+

Haixia Zhang, Cuiyan Tong, Jie Sha, Bingxin Liu, Changli Lü

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)181-189
Number of pages9
JournalSensors and Actuators, B: Chemical
Volume206
DOIs
StatePublished - Jan 1 2015

Fingerprint

Graphite
resonance fluorescence
Silicon Dioxide
Oxides
Graphene
graphene
energy transfer
Silica
Nanoparticles
silicon dioxide
nanoparticles
oxides
probes
rhodamine
Rhodamines
Fluorescent Dyes
Fluorescence
Ions
Lactams
fluorescence

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

Zhang, Haixia ; Tong, Cuiyan ; Sha, Jie ; Liu, Bingxin ; Lü, Changli. / Fluorescent mesoporous silica nanoparticles functionalized graphene oxide : A facile FRET-based ratiometric probe for Hg2+. In: Sensors and Actuators, B: Chemical. 2015 ; Vol. 206. pp. 181-189.
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Fluorescent mesoporous silica nanoparticles functionalized graphene oxide : A facile FRET-based ratiometric probe for Hg2+. / Zhang, Haixia; Tong, Cuiyan; Sha, Jie; Liu, Bingxin; Lü, Changli.

In: Sensors and Actuators, B: Chemical, Vol. 206, 01.01.2015, p. 181-189.

Research output: Contribution to journalArticle

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T1 - Fluorescent mesoporous silica nanoparticles functionalized graphene oxide

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AU - Zhang, Haixia

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AU - Liu, Bingxin

AU - Lü, Changli

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