NIR luminescence of gadolinium porphyrin complexes

Autor:	Elizabeth K. Thompson, Steffen Jockusch, Gamal Khalil, Nicholas J. Turro, James B. Callis, Martin Gouterman, Larry R. Dalton
Rok vydání:	2007
Předmět:	Lanthanide Absorption spectroscopy Chemistry Gadolinium General Physics and Astronomy chemistry.chemical_element Photochemistry Porphyrin Ion chemistry.chemical_compound Emission spectrum Physical and Theoretical Chemistry Triplet state Luminescence
Zdroj:	Chemical Physics Letters. 435:45-49
ISSN:	0009-2614
Popis:	Most lanthanide porphyrin derivatives exhibit ‘normal’ absorption spectra with Q and B bands. The rare earth ions have little effect on the absorption spectra, which are much like those of other closed-shell metalloporphyrins. However, their emission spectra vary according to which lanthanide ion is present. We observe two types of emissions: (i) a line emission arising from the lanthanide ion f–f transitions and (ii) π-π∗ emission from the triplet state of porphyrin. In this Letter, we focus on the emission from gadolinium porphyrin complexes. The oxygen sensitivity was measured in solution and polymeric film. Both intensity and lifetime Stern–Volmer plots were measured.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7236c2340561e6d4df1f3fca4305e310 https://doi.org/10.1016/j.cplett.2006.12.042 Zobrazit plný text záznamu Full Text from ScienceDirect