摘要
基质辅助激光解吸/电离飞行时间质谱(MALDI-TOF MS)作为一种软电离质谱技术,因其灵敏度高、快速、准确的特点,得到广泛的应用。研究了基质、制样方法、基质与样品的比例,以及激光强度对聚(3-辛基噻吩)(P3OT)分子量测定的影响。结果表明,选用反-2-[3-(4-叔丁基苯基)-2-甲基-2-亚丙烯基]丙二腈(DCTB)为基质,以质量比为1:20的样品/基质比例,采用干点法制样,在激光强度为60%时,可以得到P3OT的最佳图谱,数据分析重复单元分子量与P3OT重复单元一致。
As a soft ionization mass spectrometry,matrix-assisted laser desorption/ionization time of flight mass spectrometry(MALDI-TOF MS)has been widely used due to the characteristics of high sensitivity,speed and accuracy.By studying the effects of matrix,sample preparation method,matrix to sample ratio,and laser intensity on the molecular weight determination of poly(3-octylthiophene)(P3OT),the results showed that the optimal map of P3OT can be obtained when the laser intensity is 60%by using trans-2-[3-(4-tert-Butylphenyl)-2-methyl-2-propenylidene]malononitrile(DCTB)as matrix,the sample/matrix ratio of 1:20 and dry point method.The molecular weight of repeat unit is consistent with that of P3OT repeat unit.
作者
陈柔君
王大刚
潘成军
刘斌
刘丹青
王雷
Chen Roujun;Wang Dagang;Pan Chengjun;Liu Bin;Liu Danqing;Wang Lei(Material Teaching Experiment Center,College of Materials Science and Engineering,Shenzhen University,Shenzhen 518060,China)
出处
《当代化工研究》
2025年第22期150-152,共3页
Modern Chemical Research
基金
深圳大学优秀研究生导师团队培育项目(315-000066010901)
2022年度广东省教学质量与教学改革工程立项建设项目(839/0000027303)。
关键词
基质辅助激光解吸/电离飞行时间质谱
聚(3-辛基噻吩)
分子量
matrix-assisted laser desorption/ionization time of flight mass spectrometry
poly(3-octylthiophene)
molecular weight
