{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,19]],"date-time":"2025-11-19T07:07:14Z","timestamp":1763536034698,"version":"build-2065373602"},"reference-count":25,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2022,11,27]],"date-time":"2022-11-27T00:00:00Z","timestamp":1669507200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"MRID through Program I \u2013 Development of the National R &amp; D System, Subprogram 1.2-Institutional Performance-Projects for Excellence Financing in RDI, contract no. 18PFE\/2021","award":["18PFE\/2021"],"award-info":[{"award-number":["18PFE\/2021"]}]},{"name":"This work was supported by the Romanian Ministry of Research, Innovation and Digitalization (MRID), Core Program PN 18N\/2019","award":["PN 18N\/2019"],"award-info":[{"award-number":["PN 18N\/2019"]}]},{"name":"Romanian Ministry of Research, Innovation and Digitalization (MRID),","award":["PN-II-PT-PCCA-2013-4-2151, contract number 236\/2014."],"award-info":[{"award-number":["PN-II-PT-PCCA-2013-4-2151, contract number 236\/2014."]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>Sensitive electrodes based on complexing azulene polymer films were prepared by electrochemical deposition on glassy carbon electrodes. The characterization of 4-(azulen-1-yl)-2,6-bis((E)-2-(thiophen-2-yl)vinyl)pyridine (M) and its polymerization were performed by voltammetric methods on glassy carbon disk working electrodes in millimolar solutions of acetonitrile in the presence of 0.1 M tetrabutylammonium perchlorate (TBAP). The films containing complexing (thiophen-2-yl)vinyl symmetrically substituted pyridine fragments were deposited either by scanning or by controlled potential electrolysis (CPE). Investigation and morphological characterization of samples by Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDX), Atomic Force Microscopy (AFM), Fourier Transform IR Spectroscopy (FTIR), and fluorescence showed particular features of the CMEs obtained at variable potentials and charges and suggested the conservation the complexing units in the films. The characterization methods for chemically modified electrodes (CMEs) were chosen depending on the desired uses of this monomer for heavy metal sensors or optical applications, respectively.<\/jats:p>","DOI":"10.3390\/sym14122506","type":"journal-article","created":{"date-parts":[[2022,11,28]],"date-time":"2022-11-28T04:01:33Z","timestamp":1669608093000},"page":"2506","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Surface Characterization of Modified Electrodes Based on 4-(Azulen-1-yl)-2,6-bis((E)-2-(thiophen-2-yl)vinyl)pyridine"],"prefix":"10.3390","volume":"14","author":[{"given":"Irinela","family":"Chilibon","sequence":"first","affiliation":[{"name":"National Institute of Research and Development for Optoelectronics, INOE-2000, 077125 Magurele, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Adina-Maria","family":"P\u0103un","sequence":"additional","affiliation":[{"name":"Faculty of Chemical Engineering and Biotechnologies, University \u201cPolitehnica\u201d of Bucharest, 1-7 Gh. Polizu Street, 011061 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8746-4689","authenticated-orcid":false,"given":"Cristina","family":"Vasiliu","sequence":"additional","affiliation":[{"name":"National Institute of Research and Development for Optoelectronics, INOE-2000, 077125 Magurele, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elena","family":"Diacu","sequence":"additional","affiliation":[{"name":"Faculty of Chemical Engineering and Biotechnologies, University \u201cPolitehnica\u201d of Bucharest, 1-7 Gh. Polizu Street, 011061 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Raluca","family":"Isopescu","sequence":"additional","affiliation":[{"name":"Faculty of Chemical Engineering and Biotechnologies, University \u201cPolitehnica\u201d of Bucharest, 1-7 Gh. Polizu Street, 011061 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eleonora-Mihaela","family":"Ungureanu","sequence":"additional","affiliation":[{"name":"Faculty of Chemical Engineering and Biotechnologies, University \u201cPolitehnica\u201d of Bucharest, 1-7 Gh. Polizu Street, 011061 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,11,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1099","DOI":"10.1016\/j.tetlet.2006.12.083","article-title":"Synthesis of heteroarylazulenes: Transition metal free coupling strategy of azulene with heterocycles","volume":"48","author":"Shoji","year":"2007","journal-title":"Tetrahedron Lett."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/bs.aihch.2018.02.002","article-title":"The Preparation and Properties of Heteroarylazulenes and Hetero-Fused Azulenes","volume":"126","author":"Shoji","year":"2018","journal-title":"Adv. Heterocycl. 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