On the Electrical and Optical Properties of Some Poly(Azomethine Sulfone)s in Thin Films

Abstract

Poly(azomethine sulfone)s were synthesized by reacting 4,4 -sulfonyl bis(4-chlorophenyl) with 2, 2-bis(4-hydroxyphenyl)propane and azomethine bisphenol in different molar ratios. Thin films were deposited from solution onto glass substrates. Study of the temperature dependences of the electrical conductivity, σ , and Seebeck coefficient, S, were performed in the temperature range 300 K-500 K. Thermal activation energies of electrical conduction, E a , calculated from these dependences, ranged between 1.50 eV and 1.85 eV. The values of E a were smaller for polymers with extended conjugation systems. The possibility to use the polymers in thermistor technology is discussed. The aspect of the temperature dependences of σ and S shows that a model based on the energy band-gap representation can be successfully used for explaining the electronic transport mechanism in the higher temperature range. In the lower temperature range, the mechanism of the electrical conduction is discussed in terms of the Mott variable range hopping conduction. The values of some optical parameters (absorption coefficient, optical band gap, etc.) were determined from transmission spectra.

Synthesis, characterization, photophysical and surface properties of poly(amino naphthalene) and its poly(azomethine) compound

“…9,10 Also, they have showed fluorescence properties because of conjuge π-bonding. [11][12][13] Furthermore, poly (azomethine)s have the ability to form a good film 14,15 for high-quantum efficiency, light emitting, sensitivity to photonic and electronic stimuli, macromolecular interaction and multi-color emission properties when excited at certain wavelengths. [16][17][18] Kaya et al have long studied the thermal, electrochemical, optical, and electrical properties of poly(azomethine)s. 19,20 However, the application areas of aromatic poly(imine)s have limited due to their high-melting points and low-solubilities properties.…”

Synthesis, physico-chemical characterization, and environmental applications of meso porous crosslinked poly (azomethine-sulfone)s

“…Polysulfone (PSF) is a translucent engineering plastic with a sulfone group in its backbone commonly used in medical and food processing equipment, electrical and electronic components, camera boxes, and pipes 26 , 27 . These groups can chelate with transition metal ions in their solution, changing the nature of their optical characteristics and potentially serving as a useful sensor for these metals 28 – 30 . Corrosion of metals and steel, used in every industrial sector as medical, construction, and transportation means, is one of the problems that can harm the economic, engineering, and scientific worlds.…”

Poly(azomethine‐imide)s containing siloxane moities: Optical, thermal, mechanical, and morphological properties

“…These conjugated polymers have been attracted much interest because of their thermal stability, mechanical strength, optoelectronic, photovoltaic, paramagnatism, electrical conductivity, liquid crystalline, therapeutic, and ability to form complexes with metals, applications such as sensors and light emitting materials . Moreover, different derivatives of PAMs such as poly(azomethine‐urethane)s, poly(azomethine‐ether)s, poly(azomethine‐carbonate)s, and poly(azomethine‐sulfone)s were synthesized to improved solubility and processability of these polymer types.…”