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      Core-shell nanoparticles coated with molecularly imprinted polymers: a review

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      Microchimica Acta
      Springer Science and Business Media LLC

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          Upconversion and anti-Stokes processes with f and d ions in solids.

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            Recent advances in molecular imprinting technology: current status, challenges and highlighted applications.

            Molecular imprinting technology (MIT) concerns formation of selective sites in a polymer matrix with the memory of a template. Recently, molecularly imprinted polymers (MIPs) have aroused extensive attention and been widely applied in many fields, such as solid-phase extraction, chemical sensors and artificial antibodies owing to their desired selectivity, physical robustness, thermal stability, as well as low cost and easy preparation. With the rapid development of MIT as a research hotspot, it faces a number of challenges, involving biological macromolecule imprinting, heterogeneous binding sites, template leakage, incompatibility with aqueous media, low binding capacity and slow mass transfer, which restricts its applications in various aspects. This critical review briefly reviews the current status of MIT, particular emphasis on significant progresses of novel imprinting methods, some challenges and effective strategies for MIT, and highlighted applications of MIPs. Finally, some significant attempts in further developing MIT are also proposed (236 references).
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              Upconversion nanoparticles in biological labeling, imaging, and therapy.

              Upconversion refers to non-linear optical processes that convert two or more low-energy pump photons to a higher-energy output photon. After being recognized in the mid-1960s, upconversion has attracted significant research interest for its applications in optical devices such as infrared quantum counter detectors and compact solid-state lasers. Over the past decade, upconversion has become more prominent in biological sciences as the preparation of high-quality lanthanide-doped nanoparticles has become increasingly routine. Owing to their small physical dimensions and biocompatibility, upconversion nanoparticles can be easily coupled to proteins or other biological macromolecular systems and used in a variety of assay formats ranging from bio-detection to cancer therapy. In addition, intense visible emission from these nanoparticles under near-infrared excitation, which is less harmful to biological samples and has greater sample penetration depths than conventional ultraviolet excitation, enhances their prospects as luminescent stains in bio-imaging. In this article, we review recent developments in optical biolabeling and bio-imaging involving upconversion nanoparticles, simultaneously bringing to the forefront the desirable characteristics, strengths and weaknesses of these luminescent nanomaterials.
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                Author and article information

                Journal
                Microchimica Acta
                Microchim Acta
                Springer Science and Business Media LLC
                0026-3672
                1436-5073
                October 2016
                August 16 2016
                October 2016
                : 183
                : 10
                : 2677-2695
                Article
                10.1007/s00604-016-1930-4
                f8a8ec9f-3ebc-4b5f-b0d3-c2214fb5838f
                © 2016

                http://www.springer.com/tdm

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