title: Optical, Electrochemical and Thermal Studies of Conjugated Polymers Synthesized by Eutectic Melt Reaction.
abstract: This paper reports on the synthesis of a novel donor-acceptor conjugated polymers, P1 and P2 by solvent free eutectic melt polymerization reaction. Triisopropylsilylethynyl(TIPS) substituted benzo[1,2-b:4,5-b']dithiophene(BDT) is used as donor, thienithiophene(TT) and thienopyrroledione(TPD) are utilized as acceptors for demonstrating eutectic polymerization. The most important fact in the solvent-free reaction between solid reactants actually proceeds through bulk liquid phases. Such liquid phases are possible due to the formation of eutectics between the reactants and product(s) and any evolution of heat. Naphthalene is explored in this reaction for forming eutectics with the reactants, resulting in desired polymers. Thermal stability, optical and electrochemical properties of these polymers were determined. Optical band gaps of the polymers were found to be 1.58 and 1.65 eV. Electrochemical studies by cyclic voltametry experiment revealed HOMO and LUMO energy levels to be -5.22, -5.60 eV, and -3.76, -4.16 eV, respectively. The polymers were thermally stable up to 285-400 °C. Thermal, optical and electrochemical studies indicated these materials to be promising candidates in organic electronic applications.
authors.affiliation: Department of Chemistry, Research Institute for Natural Sciences Hanyang University, Seoul, 133-791, Republic of Korea. cdbathula9@gmail.com.|Institute of Material Design and Institute of Nanoscience and Technology, Hanyang University, Seoul, 133-791, Republic of Korea. cdbathula9@gmail.com.
authors.forename: Chinna
authors.initials: C
authors.lastname: Bathula
authors.affiliation: Department of Chemical Engineering, National Institute Technology, Surathkal, Karnataka, 575025, India.
authors.forename: Kezia
authors.initials: K
authors.lastname: Buruga
authors.affiliation: Department of Chemistry, Research Institute for Natural Sciences Hanyang University, Seoul, 133-791, Republic of Korea.|Department of Chemical Engineering, National Institute Technology, Surathkal, Karnataka, 575025, India.
authors.forename: Youngjong
authors.initials: Y
authors.lastname: Kang
authors.affiliation: Dapartment of Chemistry, Karnatak University, Dharwad, 580 003, India.
authors.forename: Imtiyaz Ahmed M
authors.initials: IA
authors.lastname: Khazi
keywords: Benzodithiophene; Eutectic reaction; Optoelectronic studies; Thienithiophene; Thienopyrroledione