title: D-π-A conjugated molecules for optoelectronic applications.
abstract: Dipolar chromophores consisting of electron donor (D) and electron acceptor (A) groups connected through a conjugated π-bridge have been actively studied and integrated in optoelectronic and electronic devices. Generally, such π-conjugated molecules provide substantial delocalization of π-electrons over the molecules. Here, a brief overview of recent research on D-π-A dipolar chromophores including their syntheses and several promising applications is reported, especially in nonlinear optical devices and organic photovoltaics. Structure/property relationships are discussed in order to exploit the potentials by tuning the π-electron density, polarizability, and HOMO-LUMO band gap of the chromophores. Some of the examples may well set the stage for chip-scale integration of optoelectronics as well as the realization of an important array of new device technologies.
authors.affiliation: Department of Advanced Materials, Hannam University, Daejeon, 305-811, Republic of Korea.
authors.forename: Tae-Dong
authors.initials: TD
authors.lastname: Kim
authors.affiliation: Department of Advanced Materials, Hannam University, Daejeon, 305-811, Republic of Korea.
authors.forename: Kwang-Sup
authors.initials: KS
authors.lastname: Lee
mesh_terms: D002232:Carbocyanines / Q000737:chemistry; D004581:Electronics; D004583:Electrons; D011166:Porphyrins / Q000737:chemistry; D011789:Quantum Theory; D012993:Solar Energy; D013876:Thiophenes / Q000737:chemistry
chemical_list: D002232:Carbocyanines; D011166:Porphyrins; D013876:Thiophenes
keywords: conjugated molecules; dipolar chromophores; molecular engineering; nonlinear optical materials; photovoltaics