基于碳纳米管手性指认的近红外荧光光谱仪的校准程序  

Calibration procedures of near infrared fluorescence spectrometer for chiral indices identification of carbon nanotubes

作　　者：田荣荣[1,2] 任玲玲[2] 姚雅萱[2] 张晴[2] 陶兴付 唐宾[1] 

机构地区：[1]太原理工大学表面工程研究所,山西太原030024 [2]中国计量科学研究院纳米新材料计量研究所,北京100029

出　　处：《应用光学》2015年第6期868-872,共5页Journal of Applied Optics

基　　金：国家科技支撑计划资助项目(2011BAK15B04)

摘　　要：手性指数是单壁碳纳米管(SWCNTs)亟待测量的重要参数之一,不仅直接反映了SWCNTs的直径和手性角,同时也反映了其电学特性。近红外荧光光谱法常用于指认碳纳米管的手性,而该类荧光光谱仪缺乏通用的校准方法,造成不同仪器测量结果缺乏可比性。面对该类荧光光谱仪,概括介绍设备的原理及结构,着重阐述了仪器的校准项目以及校准程序,主要包括激发光路校准(激发单色器的校准)和发射光路校准(发射单色器的校准),通过氙灯标准谱图和激光玻璃标准谱图分别将其校准至467nm和1 053nm波长位置。校准完成后,使用该类荧光光谱仪对单壁碳纳米管的手性进行指认,同时使用紫外-可见-近红外光谱仪对同一样品进行手性指认,两种方法的指认结果均为(11,1)、(8,7)、(10,3)、(9,5)、(11,3)、(8,6)、(9,2)、(7,6)、(8,4)、(7,5)、(10,2)。由手性指数指认结果的一致性可验证该校准程序准确可靠。One important parameter of single wall carbon nanotubes(SWCNTs)to be measured is chiral index.Chiral indices not only contain information about diameter and chiral angle,but also indicate electronic properties of SWCNTs.Generally,near infrared photoluminescence fluorescence spectrometer is a widely used method for chiral indices identification.However,there is no standard calibration procedures for this kind of fluorescence spectrometer,resulting in a lack of comparability between the results measured by various instruments.Based on this kind of fluorescence spectrometer,the principle and configuration of fluorescence spectrometer were briefly introduced,and the calibration procedures were discussed including excitation light path calibration and emission light path calibration.The method was to calibrate the excitation wavelength and emission wavelength to the 467 nm and 1 053 nm using standard xenon lamp spectrum and standard laser glass spectrum respectively.After calibration,chiral indices of SWCNTs were measured using calibrated instrument and ultraviolet-visible-near infraredspectrometer,and the results both are(11,1),(8,7),(10,3),(9,5),(11,3),(8,6),(9,2),(7,6),(8,4),(7,5),(10,2).The comparison results indicate that the calibration procedures are accurate.

关 键 词：荧光光谱仪 校准 碳纳米管手性指认 单色器 

分 类 号：TH744.1[机械工程—光学工程]