Quaterrylenebis(dicarboximide)s: near infrared absorbing and emitting dyes
1998; Royal Society of Chemistry; Volume: 8; Issue: 11 Linguagem: Inglês
10.1039/a804337j
ISSN1364-5501
AutoresYves Geerts, Heribert Quante, Harald Platz, Rainer F. Mahrt, M. Hopmeier, A. Böhm, Kläus Müllen,
Tópico(s)Photochemistry and Electron Transfer Studies
ResumoNew ladder-type chromophores, the quaterrylenebis(dicarboxdiimide)s 2, 18 and 23, have been synthesised which, despite their extended π-system, exhibit good solubility in organic solvents and film forming properties when adequately substituted. These unprecedented dyes, which absorb and even emit light in the NIR window, are also characterized by oustanding chemical, thermal and photochemical stability with regard to their absorption range. The potential formation of J-aggregates in strongly acidic media has been investigated and has been ruled out by combined 1 H NMR and UV-VIS-NIR spectroscopy experiments. In addition, their photophysical and electrochemical characteristics have been explored and are discussed.
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