Dual-emission fluorescent sensor based on AIE organic nanoparticles and Au nanoclusters for the detection of mercury and melamine

Literature Information

Publication Date 2015-03-25
DOI 10.1039/C5NR00554J
Impact Factor 7.79
Authors

Caixia Niu, Qiuling Liu, Zhehai Shang, Liu Zhao, Jin Ouyang



Abstract

A novel dual-emission ratiometric fluorescence probe is designed and developed by linking two parts, positively charged aggregation-induced emission (AIE) organic fluorescence nanoparticles (OFNs) as the reference and negatively charged Au nanoclusters (Au NCs) as the response, by electrostatic attraction for the first time. This probe can be used for not only visual but quantitative determination of Hg2+ as well as melamine, because red fluorescence of Au NCs can be quenched by mercury ions and recovered by melamine, due to the strong affinity metallophilic Hg2+–Au interaction and stronger affinity Hg2+–N. During this process, the green fluorescence of AIE-OFNs remains constant owing to the protection of ε-polylysine (ε-Ply). In addition, the prepared dual-emission ratiometric fluorescence probe has good biocompatibility, indicating the potential of the probe in applications of biological imaging and detection. The results revealed that this dual-emission ratiometric fluorescence probe broadens the application of AIE-based organic fluorescent nanoparticles, and presents a new method to prepare more sensitive, biocompatible, and visual ratiometric fluorescent probes.

Source Journal

Nanoscale

Nanoscale
CiteScore: 12.1
Self-citation Rate: 5.2%
Articles per Year: 1681

Nanoscale is a high-impact international journal, publishing high-quality research across nanoscience and nanotechnology. Nanoscale publishes a full mix of research articles on experimental and theoretical work, including reviews, communications, and full papers. Highly interdisciplinary, Nanoscale appeals to scientists, researchers and professionals interested in nanoscience and nanotechnology, quantum materials and quantum technology, including the areas of physics, chemistry, biology, medicine, materials, energy/environment, information technology, detection science, healthcare and drug discovery, and electronics. For publication in Nanoscale, papers must report high-quality reproducible new work that will be of significant general interest to the journal's wide international readership. Nanoscale is a collaborative venture between the Royal Society of Chemistry Publishing and a leading nanoscience research centre, the National Center for Nanoscience and Technology (NCNST) in Beijing, China. image block The journal publishes weekly issues, complementing and building on the nano content already published across the Royal Society of Chemistry Publishing journal portfolio. Since its launch in late 2009, Nanoscale has established itself as a platform for high-quality, cross-community research that bridges the various disciplines involved with nanoscience and nanotechnology, publishing important research from leading international research groups.

Recommended Suppliers

ChinaNanjing Odyssey Chemical Co., Ltd.
ChinaJIANYING SHI BAHUI FLAVOURING CO., LTD. (JIANYING SHI)
ChinaSuzhou Shengjing Environmental Protection Equipment Co., Ltd
MexicoUnivex, S.A.
ChinaJinEn (Guangzhou) New Materials Co., Ltd.
ChinaTaixing Chemical Co., Ltd.
SwitzerlandDr.Marino Müller AG
GermanySchwedes + Schulze Schüttguttechnik GmbH
GermanyTyczka Industrie-Gase GmbH
United StatesAJAY NORTH AMERICA, L.L.C.
Disclaimer
This page provides academic journal information for reference and research purposes only. We are not affiliated with any journal publishers and do not handle publication submissions. For publication-related inquiries, please contact the respective journal publishers directly.
If you notice any inaccuracies in the information displayed, please contact us at [email protected]. We will promptly review and address your concerns.