5,6-Dihydroxyindole thin films for biocompatible charge transport modulation in organic blends
Materials Chemistry and Physics, cilt.368, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 368
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.matchemphys.2026.133004
- Dergi Adı: Materials Chemistry and Physics
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Chimica, Compendex, INSPEC, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO)
- Anahtar Kelimeler: 5,6-Dihydroxyindole (DHI), Bio-inspired materials, Biosensing, Electrical conductivity, Eumelanin, Selenium tetrachloride as oxidating agent
- Çukurova Üniversitesi Adresli: Evet
Özet
Starting from 5,6-dihydroxyindole (DHI), synthesized according to standard procedures, an ad hoc protocol through the exposure of oxidizing selenium salts for the synthesis of previously uncharacterized trimeric and dimeric species was designed. The latter were characterized and identified, revealing that they consist of dimeric and trimeric species arising from a highly regioselective (oxidizing position) pathway. Subsequent deposition on glass substrates (using spin-coating technology and exposure to ammonia vapors to polymerize the product) leads to the production of thin films with remarkable stability and reproducibility across a wide range of thicknesses. Current-voltage measurements show that the optimized product exhibits stable electrical conductivity over time and ohmic in nature. These observations, together with the high biocompatibility of the material, make these films promising candidates for the manufacture of biosensor devices.