Cookies Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Femtosecond two-photon photoemission probing electron injection from the excited singlet state of perylene attached to a long rigid tripod anchor-cum-spacer on rutile TiO2(110)

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites
You must be logged in to use this functionality

image of Research on Chemical Intermediates

Electron injection from the excited singlet state of the molecular chromophore perylene into the rutile single crystal of the wide band gap semiconductor TiO2 was investigated with two photon photoemission (2PPE) spectroscopy in ultra-high-vacuum. The chromophore was attached to the (110) surface via acidic anchors of a tripod spacer-cum-anchor group. The corresponding wet-chemistry preparation step was performed in a special ultra-high-vacuum chamber that can accommodate solvents. Two electron injection times, i.e., 700 fs and 7 ps, were obtained with about equal weight factors from the fit to the measured time-dependent decay of the excited singlet state of the chromophore. UPS and 2PPE data showed the energetic position of the donor state at 0.5 eV above the bottom of the conduction band of rutile (110). The latter position confirmed the validity of the so-called wide band limiting case, where electron transfer is controlled only by the strength of the electronic coupling and not in addition by Franck–Condon factors. The two different injection times were attributed to two different adsorption configurations with two different distances for the chromophore from the crystal surface. A plausible configuration for the largest reaction distance suggests 1 nm distance between the rim of the chromophore and the surface atoms. The latter distance was identified with the 7 ps injection time, whereas the 10-times shorter injection time was attributed to a non-identified second adsorption configuration with an about 0.25 nm shorter reaction distance.


Full text loading...


Data & Media loading...

Article metrics loading...



Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to ToC alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
    Research on Chemical Intermediates — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation