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Kassahun GS, Farias ED, Benizri S, Mortier C, Gaubert A, Salinas G, Garrigue P, Kuhn A, Zigah D, Barthélémy P. Electropolymerizable Thiophene-Oligonucleotides for Electrode Functionalization. ACS APPLIED MATERIALS & INTERFACES 2022; 14:26350-26358. [PMID: 35649248 DOI: 10.1021/acsami.2c02993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Inserting complex biomolecules such as oligonucleotides during the synthesis of polymers remains an important challenge in the development of functionalized materials. In order to engineer such a biofunctionalized interface, a single-step method for the covalent immobilization of oligonucleotides (ONs) based on novel electropolymerizable lipid thiophene-oligonucleotide (L-ThON) conjugates was employed. Here, we report a new thiophene phosphoramidite building block for the synthesis of modified L-ThONs. The biofunctionalized material was obtained by direct electropolymerization of L-ThONs in the presence of 2,2'-bithiophene (BTh) to obtain a copolymer film on indium tin oxide electrodes. In situ electroconductance measurements and microstructural studies showed that the L-ThON was incorporated in the BTh copolymer backbone. Furthermore, the covalently immobilized L-ThON sequence showed selectivity in subsequent hybridization processes with a complementary target, demonstrating that L-ThONs can directly be used for manufacturing materials via an electropolymerization strategy. These results indicate that L-ThONs are promising candidates for the development of stable ON-based bioelectrochemical platforms.
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Affiliation(s)
- Getnet S Kassahun
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, 33607 Pessac Cedex, France
| | - Eliana D Farias
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, 33607 Pessac Cedex, France
| | - Sebastien Benizri
- ARNA Laboratory, University of Bordeaux, UMR CNRS 5320, INSERM U121, 33076 Bordeaux, France
| | - Claudio Mortier
- ARNA Laboratory, University of Bordeaux, UMR CNRS 5320, INSERM U121, 33076 Bordeaux, France
| | - Alexandra Gaubert
- ARNA Laboratory, University of Bordeaux, UMR CNRS 5320, INSERM U121, 33076 Bordeaux, France
| | - Gerardo Salinas
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, 33607 Pessac Cedex, France
| | - Patrick Garrigue
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, 33607 Pessac Cedex, France
| | - Alexander Kuhn
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, 33607 Pessac Cedex, France
| | - Dodzi Zigah
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, 33607 Pessac Cedex, France
- Université de Poitiers, IC2MP UMR-CNRS 7285, 86073 Poitiers Cedex 9, France
| | - Philippe Barthélémy
- ARNA Laboratory, University of Bordeaux, UMR CNRS 5320, INSERM U121, 33076 Bordeaux, France
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