一种新型短波长光吸收纳米复合材料的合成与表征

Synthesis and characterization of a new nanocomposite materials absorbed in short wavelength band

提出了一种具有包覆共掺杂结构的金属纳米粒子偶氮染料复合物(metallicnanoparticlesazo-dyecompound,简写为MNPADC)纳米复合材料合成的新方法.用透射电子显微镜(TEM)、扫描探针显微镜(SPM)、紫外可见分光光度计(UV-Vis)和热重分析仪(TGA)表征了复合材料的物理性能,分析了其吸收蓝移及热稳定性提高的机理.结果表明,该材料在400～450nm蓝紫波段具有良好的吸收强度和热稳定性,可望作为与GaN半导体激光器匹配的新型光记录介质,为短波长光存储材料的合成提供有效途径.

To accomplish the optical storage in short wavelength band and improve the thermal stability of storage media, a new synthetic method for nanocomposite materials which are codoped by metallic nanoparticles azo-dye compound (MNPADC) with structure for coating is presented for the first time. The physical properties are characterized by TEM, SPM, UV-Vis and TGA. The mechanism of absorption blue-shift effect and the improving of thermal stability of nanocomposite materials are analyzed. The results show that, due to a strong absorbance in blue-violet wavelength band (400～450 nm) and better thermal stability, the material is very hopeful to be candidate for new optical recording media which match with GaN semiconductor diode laser. The method used in our experiment can present an effective pathway to synthesize new optical recording media absorbed in short wavelength band.