Proof of chirality of J-Aggregates spontaneously and enantioselectively generated from achiral dyes
- The recently published claim1,2 that the achiral 5,5',6,6'- tetrachlorobenzimidacarbocyanine chromophore spontaneously and enantioselectively generates chiral J-aggregates when it is substituted in the 1,1'-position with n-alkyl groups longer than hexyl and in the 3,3'-position with -acido-ethyl or -acido-n-propyl groups has been proved by embedding the J-aggregates of such a dye (1a) in a polymeric PVA film and measuring the CD signal at defined observation angles. Dye 1b, which is assumed to give achiral J-aggregates, has been investigated for comparison as well. Possible contibutions of linear dichroism and birefringence of ordered molecules to the measured CD signal have been excluded by careful checks using both a plain PVA film and a film containing monomers of a dye (2) of known chirality.
Autor*innen: | Christian Spitz, Siegfried Dähne, A. Quart, H.-W. Abraham |
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Dokumenttyp: | Zeitschriftenartikel |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | The journal of physical chemistry / B |
Jahr der Erstveröffentlichung: | 2000 |
Herausgeber (Institution): | American Chemical Society |
Verlag: | Soc. |
Verlagsort: | Washington, DC |
Jahrgang/Band: | 104 |
Ausgabe/Heft: | 36 |
Erste Seite: | 8664 |
Letzte Seite: | 8669 |
DOI: | 10.1021/jp001805w |
ISSN: | 1520-6106 |
ISSN: | 1520-5207 |
ISSN: | 1089-5647 |
Verfügbarkeit des Dokuments: | Weder Datei noch physisches Exemplar vorhanden ("No Access") |
Datum der Freischaltung: | 19.02.2016 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 02.08.2000 |