Jump to main content
Jump to site search

Issue 26, 2009
Previous Article Next Article

Excited-state lifetime of propadienylidene, l-C3H2

Author affiliations

Abstract

The excited-state dynamics of the singlet carbene propadienylidene, l-C3H2, were investigated by femtosecond time-resolved photoionisation. The carbene was excited into the C 1A1 state with 250 nm pulses and the subsequent excited state dynamics were probed by multiphoton ionization with 800 nm pulses. The lifetime of the C 1A1 state was determined to be 70 fs. In agreement with recent nanosecond experiments, we assume that the carbene deactivates to the electronic ground state where it subsequently dissociates. Since propadienylidene was generated from 3-bromo-1-iodopropyne, two further radical intermediates were studied, IC3H2 and C3H2Br. For both species, an ultrafast excited state decay was observed with an upper limit of 40 fs for the respective lifetimes.

Graphical abstract: Excited-state lifetime of propadienylidene, l-C3H2

Back to tab navigation

Publication details

The article was received on 27 Jan 2009, accepted on 17 Mar 2009 and first published on 16 Apr 2009


Article type: Paper
DOI: 10.1039/B901765H
Citation: Phys. Chem. Chem. Phys., 2009,11, 5353-5357
  •   Request permissions

    Excited-state lifetime of propadienylidene, l-C3H2

    B. Noller, M. Margraf, C. Schröter, T. Schultz and I. Fischer, Phys. Chem. Chem. Phys., 2009, 11, 5353
    DOI: 10.1039/B901765H

Search articles by author

Spotlight

Advertisements