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Titolo:
Photochemistry of N,N '-bis(3,5-di-tert-butylsalicylidene)-1,2-diaminocyclohexane and its Co(II) complex in chloroform
Autore:
Kunkely, H; Vogler, A;
Indirizzi:
Univ Regensburg, Inst Anorgan Chem, D-93040 Regensburg, Germany Univ Regensburg Regensburg Germany D-93040 , D-93040 Regensburg, Germany
Titolo Testata:
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
fascicolo: 1, volume: 138, anno: 2001,
pagine: 51 - 54
SICI:
1010-6030(20010101)138:1<51:PON'>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
SCHIFF-BASE COMPLEXES; ELECTRONIC-STRUCTURE; METAL-COMPLEXES; FLUORESCENCE; OXYGENATION;
Keywords:
photochromism; luminescence photochromism; photooxidation; salen-type Schiff base; cobalt(II);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Vogler, A Univ Regensburg, Inst Anorgan Chem, D-93040 Regensburg, Germany Univ Regensburg Regensburg Germany D-93040 Regensburg, Germany
Citazione:
H. Kunkely e A. Vogler, "Photochemistry of N,N '-bis(3,5-di-tert-butylsalicylidene)-1,2-diaminocyclohexane and its Co(II) complex in chloroform", J PHOTOCH A, 138(1), 2001, pp. 51-54

Abstract

N,N'-bis(3,5-di-tert-butylsalicylidene)-1,2-diaminocyclohexane (H2E) is photochromic. In CHCl3 it undergoes a phototautomerization (phi = 3 x 10(-4) at lambda (irr) = 333 nm) to its keto isomer H(2)Q which is thermally reconverted to the original enol form. The enol is not luminescent but the keto isomer shows a green fluorescence at lambda (max) = 505 nm with phi = 10(-2) at lambda (exc) = 410 nm. Accordingly, the photoreversible system does not only display a conventional photochromism but also a luminescence photochromism. The complex Co-II(E) in CHCl3 is also light sensitive. It is irreversibly photooxidized to Co(E)(+) with phi = 5 x 10(-3) at lambda (irr)=435 nm. The electron is not removed from the metal but from the ligand. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 11:53:32