芴类荧光染料掺杂DNA-CTMA薄膜的放大自发辐射特性  

Amplified spontaneous emission of fluorene fluorescent-dye-doped DNA-CTMA thin films

作　　者：颜承恩[1] 林豪[1] 张飞雁[1] 李星[2] 周骏[1] 

机构地区：[1]宁波大学理学院,光电子技术研究所,浙江宁波315211 [2]宁波大学材料科学与化学工程学院,浙江宁波315211

出　　处：《强激光与粒子束》2012年第10期2306-2310,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(60977048,20971075);宁波市国际科技合作计划项目(2010D10018);浙江省大学生科技创新活动(创业孵化项目)(2011R405050)

摘　　要：钯催化Suzuki反应合成得到一种9,9-二乙基-2,7-二-(4-吡啶)芴(DPFP)荧光染料,研究了该染料的吸收和荧光光学特性,以及DPFP掺杂DNA-CTMA薄膜的荧光光谱特性和放大自发辐射特性。实验结果表明:DPFP的吸收峰位于333nm,DPFP的荧光光谱在370nm和386nm出现荧光峰,在408nm出现肩峰,存在从激发态S1能级到基态S0能级的S10-S00,S10-S01和S10-S02三种振动带的电子跃迁;同时,在Nd:YAG纳秒激光器355nm输出光的泵浦下,DPFP掺杂DNA-CTMA薄膜在波长390nm和406nm处实现了放大自发辐射,其阈值能量密度分别为3.24和3.40mJ/cm2;此外,通过调节DPFP掺杂DNA-CTMA的质量比可以实现特定波长的放大自发辐射。The 4-（9, 9-diethyl-2-（pyridin-4-yl）-9H-fluoren-7-yl） pyridine （DPFP） was synthesized via a Suzuki coupling re- action. The optical spectra properties of DPFP and DPFP-DNA-CTMA thin films were characterized by the measurements of the UV/VIS absorption spectrum and fluorescence spectrum. The amplified spontaneous emission （ASE） of the DPFP-DNA-CTMA thin film was studied experimentally by pumping of pulse laser with a wavelength of 355 nm. The result shows that the absorption peak is located at 333 nm and the fluorescence peaks of DPFP are 370 nm, 386 nm, 408 nm. The fluorescence spectrum of DPFP has the multi-peaks which are corresponding to the vibronic transitions from an excited state of S1 level to the ground state of So level. The ASE peaks of DPFP-DNA-CTMA thin films are located at 390 nm and 406 nm, and the threshold energy densities are 3.24 mJ/cm2 and 3.4 mJ/cm2 , respectively. By adjusting the doped proportion of DPFP in DNA-CTMA, ASE can be realized at a specific wavelength.

关 键 词：荧光染料 电子振动跃迁 放大自发辐射 DNA-CTMA 

分 类 号：O433.1[机械工程—光学工程]