Synthesis and characterization of hyperbranched conjugated polymers based on triphenylamine, phenoxazine, and benzothiadiazole for optoelectronic applications

• Published in: Optical materials. X 2023-12, Vol.20, p.100270, Article 100270
• Main Authors: Nguyen, Tam Huu, Bui, Thao Thanh, Le Nguyen, Thao Phuong, Mai, Ngoc Xuan Dat, Doan, Bao Kim, Luu, Tam Hoang, Nguyen, Le-Thu T., Tran, Chau Duc, Le Tran, Hai, Cu, Son Thanh, Phan, Minh Nghia, Nguyen, Quoc-Thiet, Nguyen, Ha Tran
• Format: Article
• Language: English
• Subjects: Benzothiadiazole; Conjugated polymer; Direct arylation polymerization; Optoelectronic application; Triphenylamine
• ISSN: 2590-1478; 2590-1478
• DOI: 10.1016/j.omx.2023.100270

In this work, two novel hyperbranched conjugated polymers poly(tris(4-(10-(2-ethylhexyl)-10H-phenoxazin-3-yl)phenyl)amine) (P1) and poly (tris(4-(7-(benzo[c][1,2,5]thiadiazol-4-yl)-10-(2-ethylhexyl)-10H-phenoxazin-3-yl)phenyl)amine) (P2) have been successfully synthesized via Direct polycondensation in the presence of Pd(OAc)2 as a catalyst. The chemical structures of novel conjugated polymers then were determined via Fourier-transform infrared spectroscopy (FTIR) and proton nuclear magnetic resonance (1H NMR). Subsequently, the optical properties of conjugated polymers in different solvents were investigated via UV–Vis absorption and fluorescence emission (PL) spectroscopies, and were analyzed for optoelectronic applications. •Hyperbranched polymers based on triphenylamine, 10-(2-ethylhexyl)-10H-phenoxazine and benzo[c][1,2,5]thiadiazole were formed.•The chemical structures of the synthesized conjugated polymers were well characterized via 1H NMR and FT-IR.•The obtained conjugated polymers exhibited fluorescence emission.