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Polymers 2017, 9(10), 512; doi:10.3390/polym9100512

Conjugated Polymers Containing BODIPY and Fluorene Units for Sensitive Detection of CN Ions: Site-Selective Synthesis, Photo-Physical and Electrochemical Properties

College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
These authors contributed equally to this work.
Authors to whom correspondence should be addressed.
Received: 11 September 2017 / Revised: 9 October 2017 / Accepted: 10 October 2017 / Published: 14 October 2017
(This article belongs to the Special Issue Conjugated Polymers 2016)
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Conjugated polymers containing distinct molecular units are expected to be very interesting because of their unique properties endowed by these units and the formed conjugated polymers. Herein, four new conjugated copolymers based on fluorene and 4,4’-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) have been designed and synthesized via Sonogashira polymerization. The fluorene unit was attached to the 3,5- or 2,6-positions of BODIPY by ethynylenes or p-diacetylenebenzene. The obtained polymers show good thermal stability and broad absorption in the wavelength range from 300 to 750 nm. The effects of site-selective copolymerization and conjugation length along the polymer backbone on the optoelectronic and electrochemical properties of these copolymers were systematically studied by UV-Vis spectroscopy, photoluminescence (PL) and cyclic voltammetry. Besides, it is found that the BODIPY-based copolymers exhibit selectively sensitive responses to cyanide anions, resulting in obvious change of UV-Vis absorption spectra and significant fluorescence quenching of the polymers among various common anions. View Full-Text
Keywords: BODIPY; conjugated copolymers; site-selective; cyanide anion BODIPY; conjugated copolymers; site-selective; cyanide anion

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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He, T.; Tang, D.; Lin, C.; Shen, X.; Lu, C.; Xu, L.; Gu, Z.; Xu, Z.; Qiu, H.; Zhang, Q.; Yin, S. Conjugated Polymers Containing BODIPY and Fluorene Units for Sensitive Detection of CN Ions: Site-Selective Synthesis, Photo-Physical and Electrochemical Properties. Polymers 2017, 9, 512.

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