咔唑类化合物的光致发光特性  

Photoluminescence properties of carbazole compounds

作　　者：屈玉峰[1,2,3] 许良[4] 孙连来[2,3] 方瑜[1] 张庆军[1] 罗炫[1] 曹林洪[2,3] 刘红婕[1] 黄进[1] 蒋晓东[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900 [2]西南科技大学-中国工程物理研究院激光聚变研究中心极端条件物质特性联合实验室,四川绵阳621010 [3]西南科技大学材料科学与工程学院,四川绵阳621010 [4]西南科技大学理学院,四川绵阳621010

出　　处：《强激光与粒子束》2013年第3期615-619,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(60908023);中物院科技发展基金项目(2010B0401055);中物院创新基金项目(CX08201205)

摘　　要：聚二氯磷腈(PDCP)与N-(6-羟基己基)咔唑发生亲核取代,得到了热稳定性良好(约290℃)、玻璃化温度较低(约36℃)的光电导材料聚双(6-咔唑基己氧基)磷腈。稳态荧光光谱表明,N-(6-羟基己基)咔唑和聚双(6-咔唑基己氧基)磷腈的荧光发射最大波长分别在410nm和393nm,其荧光强度相比于咔唑的最大波长420nm依次减弱并发生蓝移;瞬态荧光光谱表明聚磷腈的线型主链结构和孤立的dπ-pπ杂化轨道体系导致其空间位阻增大,破坏了原有的共轭体系,使聚双(6-咔唑基己氧基)磷腈在不同发射波长下的荧光寿命普遍减小。Poly[bis（6-carbazolhexyloxy）]phosphazene with good thermal stability（about 290 ~C） and a low glass transition temperature（about 36 ~C） was synthesized with N-（6 hydroxyhexyl）earbazole and linear polydichlorophosphazene. Steady state fluorescence spectra elucidated that the maximum fluorescence-emission wavelengths of carbazole, N-（6-hydroxyhexyl）carbazole and poly[bis（6-carbazolhexyloxy）] phosphazene are 420, 410, and 393 nm, respectively. The fluorescence intensity of N-（6- hydroxyhexyl）carbazole and poly[bis（6-carbazolhexyloxy）]phosphazene decreases orderly and has a blue-shift compared with car- bazole. The transient fluorescence spectra show that the linear backbone and the isolated dn-pn hybrid orbital of polyphosphazene might increase steric hindrance and disrupt the previous conjugate system, leading to decrease of the fluorescence lifetime of poly [bis（6-carbazolhexyloxy）]phosphazene at several emission wavelengths.

关 键 词：咔唑 聚磷腈 热性能 固体荧光 荧光寿命 

分 类 号：O633[理学—高分子化学]