Graphene oxide based surface-enhanced Raman scattering probes for cancer cell imaging

Literature Information

Publication Date 2013-01-03
DOI 10.1039/C2CP43715E
Impact Factor 3.676
Authors

Zhiming Liu, Zhouyi Guo, Huiqing Zhong, Xiaochu Qin, Mingming Wan, Biwen Yang


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Abstract

The intrinsic Raman signals provide the potential of graphene oxide (GO) for cellular imaging. Herein, novel surface-enhanced Raman scattering (SERS) labels based on GO–Ag nanoparticle (NP) composites are developed for fast cellular probing and imaging. The optimum SERS signals of the hybrids can be well controlled by adjusting the weight ratio between AgNO3 and GO. Utilizing GO–AgNPs as the highly sensitive optical probes, fast SERS imaging of cancer cells is realized with a very short integration time of about 0.06 s per pixel. Furthermore, folic acid (FA) is covalently conjugated to GO for targeting specific cancer cells with folate receptors (FRs). Targeted SERS images can be acquired after 2 h incubation with FA–GO–AgNPs, which are specifically located on the surface of FR-positive cancer cells. In conclusion, the GO-based Raman probes mentioned here open up exciting opportunities for biomedical imaging.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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