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. 2020 Jan 7;12(1):152. doi: 10.3390/polym12010152

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(A) Fluorescence emission spectra of C6G5C6-apt-AgNCs under various conditions: (a) C6G5C6-apt-AgNCs (b) PPyNPs (c) C6G5C6-apt-AgNCs + PPyNPs (d) C6G5C6-apt-AgNCs + PPyNPs + SEA (e) C6G5C6-apt-AgNCs + SEA (C6G5C6-apt-AgNCs, 2.4 μM; PPyNPs, 8 mg/mL; SEA, 500 ng/mL). (B) Fluorescence spectra in the presence of increasing concentration of the target. (C) A linear relationship is obtained when the concentration of SEA is in the range of 0.5–1000 ng/mL. (D) Relative FI of the proposed bioassay for SEA and other toxins (SEB, SEC1, SED, bovine serum albumin (BSA)).