Molecules | |
Probing Coherent Vibrations of Organic Phosphonate Radical Cations with Femtosecond Time-Resolved Mass Spectrometry | |
Derrick Ampadu Boateng1  Mi’KaylaD. Word1  KatharineMoore Tibbetts1  | |
[1] Department of Chemistry, Virginia Commonwealth University, Richmond, VA 23284, USA; | |
关键词: femtosecond spectroscopy; pump–probe; mass spectrometry; wave packet dynamics; organic phosphonates; | |
DOI : 10.3390/molecules24030509 | |
来源: DOAJ |
【 摘 要 】
Organic phosphates and phosphonates are present in a number of cellular components that can be damaged by exposure to ionizing radiation. This work reports femtosecond time-resolved mass spectrometry (FTRMS) studies of three organic phosphonate radical cations that model the DNA sugar-phosphate backbone: dimethyl methylphosphonate (DMMP), diethyl methylphosphonate (DEMP), and diisopropyl methylphosphonate (DIMP). Upon ionization, each molecular radical cation exhibits unique oscillatory dynamics in its ion yields resulting from coherent vibrational excitation. DMMP has particularly well-resolved 45 fs (
【 授权许可】
Unknown