Effective adjustment of the optoelectronic properties of organic conjugated materials by synthesizing p-n diblock molecules  

作　　者：JIANG HongJi 

机构地区：[1]Key Laboratory of Organic Electronics & Information Displays, Institute of Advanced Materials, Nanjing University of Posts andTelecommunications, Nanjing 210046, China

出　　处：《Chinese Science Bulletin》2011年第2期119-136,共18页

基　　金：supported by the National Basic Research Program of China(2009CB930601);the Key Project of the Ministry of Education(104246);the National Natural Science Foundation of China(20774043,60706017 and 20574012);the Creative Research Group of Jiangsu College Council(TJ207035 and TJ209035);the Natural Science Foundation of Jiangsu College Council(10KJB150012)

摘　　要：Because organic conjugated materials offer several advantages relative to their inorganic counterparts,the development of organic conjugated materials has been one of the most active research areas in optoelectronic materials.For almost two decades,the search for organic conjugated materials has represented a major driving force for research concerned with controlling the band gap of extended π-conjugated molecules.In particular,among the parameters affecting the performance of organic light-emitting diodes (OLEDs),the energy levels of organic conjugated materials play an important role because they can affect the driving voltage,wavelength,efficiency,and lifetime of the final device.Balanced injection and transport of electrons and holes are therefore crucial for achieving OLEDs with high quantum efficiency.In this regard,research into adjusting the energy levels of organic conjugated materials is very meaningful for the development of OLEDs.To adjust the energy levels of the organic conjugated materials,Huang et al.have presented a new molecular design and synthesis route that yields p-n diblock conjugated copolymers and oligomers.The present review summarizes and analyzes the progress on adjusting the optoelectronic properties of organic conjugated materials that is due to synthesizing p-n diblock molecules.We discusses primarily work done by Huang et al.,but also discusses work done elsewhere over the past few years.We also point out issues that require attention,and highlight hot spots that require further investigation.Because organic conjugated materials offer several advantages relative to their inorganic counterparts, the development of organic conjugated materials has been one of the most active research areas in optoelectronic materials. For almost two decades, the search for organic conjugated materials has represented a major driving force for research concerned with controlling the band gap of extended n-conjugated molecules. In particular, among the parameters affecting the performance of organic light-emitting diodes （OLEDs）, the energy levels of organic conjugated materials play an important role because they can affect the driving voltage, wavelength, efficiency, and lifetime of the final device. Balanced injection and transport of electrons and holes are there- fore crucial for achieving OLEDs with high quantum efficiency. In this regard, research into adjusting the energy levels of organic conjugated materials is very meaningful for the development of OLEDs. To adjust the energy levels of the organic conjugated materials, Huang et al. have presented a new molecular design and synthesis route that yields p-n diblock conjugated copolymers and oligomers. The present review summarizes and analyzes the progress on adjusting the optoelectronie properties of organic conjugated materials that is due to synthesizing p-n diblock molecules. We discusses primarily work done by Huang et ai., but also discusses work done elsewhere over the past few years. We also point out issues that require attention, and highlight hot spots that require further investigation.

关 键 词：嵌段共聚物 结合材料 共轭分子 合成路线 光电性能 调整 有机发光二极管 能量水平 

分 类 号：TN304.21[电子电信—物理电子学] O631.1[理学—高分子化学]