蓝光材料9，10-二(β-萘基)蒽的合成与光谱分析

Synthesis and Spectral Analysis of Blue Emitting Material 9,10-Di(β-naphthyl)anthracene

采用还原β-萘基锂与蒽醌的加成物制备了有机电致蓝光材料9,10-二(β-萘基)蒽(ADN)。通过红外、核磁共振对其结构进行了表征。利用紫外可见吸收光谱、循环伏安法和荧光光谱等研究了其HOMO、LUMO能级及发光性能。紫外可见吸收光谱有2个吸收带,其中E带有2个吸收峰,波长分别为232nm、260nm;B带有3个吸收峰,其波长分别为359nm、377nm、398nm,ADN的吸收带边为420nm,计算其能级差为2.95eV。采用398nm的激发光激发,荧光发射峰值波长为426nm,半峰宽为56nm,有很好的蓝光色纯度。通过循环伏安法测得其氧化峰电位为1.28 V,推算出ADN的HOMO能级为5.60 eV,LUMO能级为2.65 eV。

9,10-Di（β-naphthyl）anthracene was synthesized by reducing the addition product of β-naphthyl- lithium with anthraquinone. Its structure was determined by FTIR and ^1 H NMR. Its HOMO, LUMO and luminescence characteristics were studied by UV-Vis absorption spectra, cyclic voltammetry method and fluorescence spectra. In the UV-Vis absorption spectra of ADN, there are two absorption bands, two absorption peaks at 232 nm, 260 nm in E band, three peaks at 359 nm, 377 nm, 398 nm in B band, By the edge of UV absorption 420 nm, we can calculate energy gap of ADN is 2.95 eV, When excited by 398 nm photos, ADN emits blue fluorescence peaked at 426 nm and a full width at half-maximum of 56 nm, showing a very good blue purity. By cyclic voltammetry and the energy gap we can calculate the HOMO energy and LUMO energy of ADN are 5.60 eV and 2.65 eV, respectively.