Synthesis and characterization of the polyaminophenol derivatives containing thiophene in side chain: Thermal degradation, electrical conductivity, optical‐electrochemical, and fluorescent properties

Abstract

Novel polyaminophenols, poly-2-[3-thienylmethylene]aminophenol (P-2,3-TP), poly-3-[3-thienylmethylene]aminophenol (P-3,3-TP) and poly-4-[3-thienylmethylene]amino phenol (P-4,3-TP), were synthesized by oxidative polycondensation reaction. Metal complexes of P-2,3-TP were also obtained. The structures of synthesized compounds were confirmed by FT-IR, UV-vis, 1 H NMR, and 13 C NMR techniques. The characterization was made by TG-DTA, DSC, and gel permeation chromatography (GPC) analyses in addition to solubility tests. Electrical conductivities of polymers were measured by four-point probe technique. Fluorescence measurements were carried out in various solutions and optimum concentrations and maximal intensities were determined. The new synthesized polyaminophenols are good candidates for electronic, opto-electronic, and photovoltaic applications due to polyconjugated structures.

Electrochemical synthesis and electrochromic application of a novel polymer based on carbazole

“…Due to thiophene groups in the structure of B1, the peak related to CAS bonding is observed at 746 and 725 cm À1 , as expected [36]. Moreover, the presence of these peaks confirms that the reaction successfully occurs.…”

Vanadium(III) complexes containing phenoxy–imine–thiophene ligands: Synthesis, characterization and application to homo‐ and copolymerization of ethylene

“…2.2 | Synthesis of phenoxy-imine-thiophene ligands 2.2.1 | Thiophene-(N═CH)-phenol (1a) [7] To a stirred solution of 2-thiophenecarbaldehyde (0.4486 g, 4.00 mmol) in ethanol, 2-aminophenol (0.4365 g, 4.00 mmol) and formic acid (3 drops) were added. The reaction mixture was stirred for 72 h at 35°C.…”

Synthesis, characterization and electrochemical properties of poly(phenoxy-imine)s containing carbazole unit

“…Table 2 except for DEACIMP and P-DEACIMP. When phenol-based Schiff bases were polymerized by oxidative polycondensation, they were combined by C-C binding at ortho and/or para position of the ring or alternatively C-O-C binding through oxygen atom of -OH moiety (Scheme 1) [2,18]. H NMR spectra of polymers shows broad signals for aromatic protons which confirm the participation of aromatic ring in polymerization [2,19].…”