大碳笼富勒烯D_(3d)(3)-C_(96)的质谱研究  

A mass spectra study of higher fullerene D_(3d)(3)-C_(96)

作　　者：邱雅娜 李燕丽 孙丹燕 马海迪 刘子阳 杨华 俞梅兰[2] QIU Yana;LI Yanli;SUN Danyan;MA Haidi;LIU Ziyang;YANG Hua;YU Meilan(College of Material Science and Engineering,China Jiliang University;College of Life Science,Zhejiang Sci-Tech University,Hangzhou 310018,China)

机构地区：[1]中国计量大学材料科学与工程学院,杭州310018 [2]浙江理工大学生命科学学院,杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2018年第4期491-497,共7页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：国家自然科学基金项目(11274283;21405140);浙江省科技厅项目(2013C24017);浙江省自然科学基金项目(LR12B01001);浙江理工大学科研启动基金(15042089-Y);浙江省大学生科研创新活动计划资助项目(2014R409008)

摘　　要：通过基质辅助激光解吸电离质谱(MALDI-MS)、激光解吸离子化质谱(LDI-MS)和碰撞诱导解离串联质谱(CID-MS/MS)分析大碳笼富勒烯D_(3d)(3)-C_(96)的电离特征和分子离子的碎裂、内嵌加和反应行为,并利用MALDI和LDI对大碳笼富勒烯D_(3d)(3)-C_(96)的分析分别采用软电离和硬电离方法。结果表明:在LDI方法中,随着激光强度增加,D_(3d)(3)-C_(96)失去C2单元的系列碎片离子中,C+92、C+88、C+82、C+70等碎片离子表现出"魔数"现象;在CIDMS/MS方法中,不仅观察到D_(3d)(3)-C+96连续失去C2单元形成一系列碎片离子,而且还观察到该大碳笼富勒烯离子经碰撞将氦(He)内嵌入其碳笼内,进而再断裂成相应的碎片离子。Matrix assisted laser desorption/ionization mass spectrometry（MALDI-MS）,Laser desorption/ionization mass spectrometry（LDI-MS）and Collision-induced dissociation tandom mass spectrometry（CID-MS/MS）methods were successively adopted to study ionization feature,molecular ion fragmentation and encasing addition of the higher fullerene D3d（3）-C96.Besides,soft and hard ionization method was used in analysis of higher fullerene D3d（3）-C96 by MALDI and LDI.The results show that in LDI method,with the increase of laser intensity,some special fragment ions such as C92^＋,C88^＋,C82^＋ and C70^＋ among a series of fragment ions of D3d（3）-C96 losing C2 present＂magic number＂effect.In CID-MS/MS method,we not just observed D3d（3）-C96^＋ continuously lost C2 and formed a series of fragment ions,but also observed the higher fullerene ion encased Helium in the carbon cage through collision and then split into the relative fragment ions.

关 键 词：质谱 富勒烯 C96 碰撞诱导解离 氦 

分 类 号：TS195.644[轻工技术与工程—纺织化学与染整工程]