{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,5]],"date-time":"2026-05-05T00:29:58Z","timestamp":1777940998809,"version":"3.51.4"},"reference-count":55,"publisher":"SAGE Publications","license":[{"start":{"date-parts":[[2021,1,1]],"date-time":"2021-01-01T00:00:00Z","timestamp":1609459200000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004608","name":"the Jiangsu Key Research and Development Plan","doi-asserted-by":"publisher","award":["BE2018639"],"award-info":[{"award-number":["BE2018639"]}],"id":[{"id":"10.13039\/501100004608","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Technol Cancer Res Treat"],"published-print":{"date-parts":[[2021,1,1]]},"abstract":"<jats:p>\n                    Bifunctional magnetic\/fluorescent core-shell silica nanospheres (MNPs) encapsulated with the magnetic Fe\n                    <jats:sub>3<\/jats:sub>\n                    O\n                    <jats:sub>4<\/jats:sub>\n                    core and a derivate of 8-amimoquinoline (N-(quinolin-8-yl)-2-(3-(triethoxysilyl) propylamino) acetamide) (QTEPA) into the shell were synthesized. These functional MNPs were prepared with a modified st\u00f6ber method and the formed Fe\n                    <jats:sub>3<\/jats:sub>\n                    O\n                    <jats:sub>4<\/jats:sub>\n                    @SiO\n                    <jats:sub>2<\/jats:sub>\n                    -QTEPA core-shell nanocomposites are biocompatible, water-dispersible, and stable. These prepared nanoparticles were characterized by X-ray power diffraction (XRD), transmission electron microscopy (TEM), thermoelectric plasma Quad II inductively coupled plasma mass spectrometry (ICP-MS), superconducting quantum interference device (SQUID), TG\/DTA thermal analyzer (TGA) and Fourier transform infrared spectroscopy (FTIR). Further application of the nanoparticles in detecting Zn\n                    <jats:sup>2+<\/jats:sup>\n                    was confirmed by the fluorescence experiment: the nanosensor shows high selectivity and sensitivity to Zn\n                    <jats:sup>2+<\/jats:sup>\n                    with a 22-fold fluorescence emission enhancement in the presence of 10 \u03bcM Zn\n                    <jats:sup>2+<\/jats:sup>\n                    . Moreover, the transverse relaxivity measurements show that the core-shell MNPs have T2 relaxivity (r2) of 155.05 mM\n                    <jats:sup>\u22121<\/jats:sup>\n                    S\n                    <jats:sup>\u22121<\/jats:sup>\n                    based on Fe concentration on the 3.0 T scanner, suggesting that the compound can be used as a negative contrast agent for MRI. Further in vivo experiments showed that these MNPs could be used as MRI contrast agent. Therefore, the new nanosensor provides the dual modality of magnetic resonance imaging and optical imaging.\n                  <\/jats:p>","DOI":"10.1177\/15330338211036539","type":"journal-article","created":{"date-parts":[[2021,8,5]],"date-time":"2021-08-05T05:06:15Z","timestamp":1628139975000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":5,"title":["Silica-Coated Fe\n                    <sub>3<\/sub>\n                    O\n                    <sub>4<\/sub>\n                    Nanoparticles as a Bifunctional Agent for Magnetic Resonance Imaging and ZnII Fluorescent Sensing"],"prefix":"10.1177","volume":"20","author":[{"given":"Lin","family":"Qiu","sequence":"first","affiliation":[{"name":"School of Pharmacy & School of Medicine, Changzhou University, Changzhou, People\u2019s Republic of China"},{"name":"Jiangsu Science Standard Medical Testing Co., Ltd, Changzhou, Jiangsu, People\u2019s Republic of 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