Ultrafast Photofragmentation of Ln(hfac)₃ with a Proposed Mechanism for forming High Mass Fluorinated Products.

ABSTRACT: The photo-induced dissociative-ionization of lanthanide complexes Ln(hfac)₃ (Ln = Pr, Er, Yb) is studied using intense ultrafast transform limited (TL) and linearly chirped laser pulses in a time-of-flight (TOF) mass spectrometry setup. Various fluorine and Ln-containing high-mass fragments were observed in this experiment, including the molecular parent ion, which have not been seen with previous studies relying on relatively long-duration laser pulses (i.e., ns or longer). These new high-mass observations provide important formerly missing information for deducing a set of photo-fragmentation mechanistic pathways for Ln(hfac)₃. An overall ultrafast control mechanism is proposed by combining insights from earlier studies and the fragments observed in this research to

SUBMITTER: Chen J 

PROVIDER: S-EPMC7184609 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature