两个“双2,4,5-三取代噁唑”有机电致发光材料的合成及其荧光性能研究

Synthesis and fluorescence properties of two bis(2,4,5-trisubstitutedoxazoles) as organic light-emitting diodes

分别以间苯二甲酸和2,6-吡啶二甲酸为原料,以N,N′-二环己基碳二亚胺/4-二甲氨基吡啶（DCC/DMAP）为催化体系,采用＂一锅法＂通过与苯偶姻缩合制备了两个新化合物：1,3-双（4,5-二苯基噁唑-2基-）苯和2,6-双（4,5-二苯基噁唑-2基-）吡啶.产物经过了1H NMR,13C NMR,IR和MS鉴定,并且借助紫外分光光度计和荧光分光光度计进行了性能表征.紫外光谱表明二者的最大吸收波长分别位于229 nm和241 nm处;荧光光谱表明二者的最大发射波长分别位于390 nm和404 nm处,谱峰半峰宽在50~80 nm范围,已经接近蓝光的波段范围,是潜在的有机小分子发光材料.

Two new compounds,1,3-bis（4,5-diphenyloxazol-2-yl）benzene and 2,6-bis（4,5-diphenyloxazol-2-yl）pyridine,were synthesized by the condensation of benzoin with isophthalic acid and 2,6-pyridine dicarboxylic acid respectively catalyzed by N,N′-dicyclohexylcarbodiimide/4-dimethylamino pyridine（DCC/DMAP） system in a ＂One Pot＂ process.The target products were identified by 1H NMR,13C NMR,IR and MS as well as characterized by UV-Vis and photoluminescence spectra.The results indicated that their maximum absorption peak of UV-vis located in 229 nm and 241 nm respectively,and their maximum emission peak of photoluminescence located in 390 nm and 404 nm respectively with the half-peak width between 50~80 nm,which was close to the wave band of blue light and indicated them two potential organic light-emitting materials.