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. 2019 Nov 22;19(23):5111. doi: 10.3390/s19235111

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© 2019 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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Performance of DNA biosensor with phthalides and bisindoles compounds; 3-[(1,3,3-Trimethylindolin-2-ylidene)methyl]isobenzofuran-1(3H)-one (3a), 3-[(5-Chloro-1,3,3-trimethylindolin-2-ylidene)methyl]isobenzofuran-1(3H)-one (3b), 6,7-Dimethoxy-3-[(5-chloro-1,3,3-trimethylindolin-2-ylidene)methyl]isobenzofuran-1(3H)-one (3c), 3-(1-Methylindol-3-yl)isobenzofuran-1(3H)-one (4a), 3-(5-Bromo-1-methylindol-3-yl)isobenzofuran-1(3H)-one (4b), 6,7-Dimethoxy-3-(5-bromo-1-methylindol-3-yl)isobenzofuran-1(3H)-one (4c), 2-(Bis(1-methylindol-3-yl)methyl)benzoic acid (5a) and2-(Bis(5-bromo-1-methylindol-3-yl)methyl)benzoic acid (5b). * Large error bars show the non-carcinogen compounds.