Effect of matrix and solvent on the analysis of novel poly(phenylenevinylene) derivatives by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry.
Six novel poly(phenylenevinylene) (PPV) derivatives carrying butoxy or myrtanyl groups, including poly(2-butoxy-m-phenylenevinylene) (Bu-MPV), poly(2,5-dibutoxy-p-phenylenevinylene-alter-p-phenylenevinylene) (Bu-PPPV), poly(2,5-dibutoxy-p-phenylenevinylene-alter-m-phenylenevinylene) (Bu-PMPV), poly(2-myrtanyl-m-phenylenevinylene) (Myr-MPV), poly(2,5-dimyrtanyl-p-phenylenevinylene-alter-p-phenylenevinylene) (Myr-PPPV), and poly(2,5-dimyrtanyl-p-phenylenevinylene-alter-m-phenylenevinylene) (Myr-PMPV), were characterized by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS). The repeat unit mass and the end-group structures of each sample were obtained. Distinctly different spectra with different ion series and/or different ion signal intensities were observed for the analytes Bu-MPV, Myr-MPV, Bu-PPPV, Myr-PPPV and Myr-PMPV when different matrices were used, and different ion series were acquired when different solvents were used for Myr-PPPV and Myr-PMPV. The results show that the PPV oligomers with different shapes and/or with different end groups can be selectively desorbed and ionized in MALDI by using different matrices.
Zhang
Zhenying
Z
Instrumental Analysis & Research Center, Sun Yat-Sen University, Guangzhou 510275, Guangdong, China.
Deng
Huimin
H
Deng
Qinying
Q
Zhao
Shankai
S
D000875:Anthralin / Q000737:chemistry*; D001391:Azo Compounds / Q000737:chemistry*; D019817:Benzoic Acid / Q000737:chemistry*; D007211:Indoles / Q000737:chemistry; D015394:Molecular Structure; D008970:Molecular Weight; D011145:Polyvinyls / Q000032:analysis* / Q000737:chemistry; D012996:Solutions; D012997:Solvents / Q000737:chemistry*; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization / Q000379:methods*; D013941:Thymine / Q000031:analogs & derivatives* / Q000737:chemistry*; D014227:Triazines
D001391:Azo Compounds; D007211:Indoles; D011145:Polyvinyls; D012996:Solutions; D012997:Solvents; D014227:Triazines; C470024:poly(4-phenylenevinylene); C001413:HABA; C005823:2-thio-6-azathymine; C001446:indoleacrylic acid; D019817:Benzoic Acid; D013941:Thymine; D000875:Anthralin