Development of donor acceptor low band gap polymers for photoconducting and non linear optical applications theorectical design and synthesis

Abstract

Conjugated polymers with donor-acceptor (D-A) alternating pattern newlinealong their backbone have recently received significant attention owing to newlinetheir technological applications in opto-electronic devices such as newlinetransistors, photovoltaic devices, polymer light-emitting diodes, newlinephotorefractive devices and in non-linear optical devices. Conjugated newlinepolymers have attracted technological interest due to their several newlineadvantages such as low cost, ease of fabrication, high stability, structural newlineflexibility, processability etc. The major aim of the present work was to newlinesynthesize low band gap polymers possessing both photoconducting and newlinenon-linear optical property. The major objectives of the present study are: newlineand#61607; Synthesis of p-aminoazobenzene based non-conjugated newlinepolybenzoxazine system for photoconductivity studies using newlinePCBM as sensitizer. newlineand#61607; Theoretical designing of donor-acceptor low band gap newlineconjugated copolymers for photoconductive and non-linear newlineoptical application using Density Functional Theory in the newlinePeriodic Boundary Condition (PBC) formalism. newlineand#61607; Synthesis of donor-acceptor type low band gap conjugated newlinecopolymers using direct arylation and Suzuki coupling methods. newlineand#61607; Explore the application of the synthesized copolymers in newlinephotoconducting and in non-linear optical devices newline