The stability to visible light of five 4-diethylaminoazobenzenes was investigated in different solvents under various experimental conditions, as well as in solid crystalline form and on dyed poly(ethyleneterephthalate). Though generally exhibiting relatively high photostability, all investigated dyes underwent photodegradation in acetone solution. Two different reaction paths were recognised in this solvent, depending on the nature and position of the substituting groups on the second aromatic ring, both involving the formation and subsequent fragmentation of organic free radicals, as suggested by the strong inhibiting effect of molecular oxygen on the photodegradation rate.

(2001). Photostability of substituted 4-diethylaminoazobenzenes [journal article - articolo]. In DYES AND PIGMENTS. Retrieved from https://hdl.handle.net/10446/241576

Photostability of substituted 4-diethylaminoazobenzenes

Fontana, Francesca;
2001-01-01

Abstract

The stability to visible light of five 4-diethylaminoazobenzenes was investigated in different solvents under various experimental conditions, as well as in solid crystalline form and on dyed poly(ethyleneterephthalate). Though generally exhibiting relatively high photostability, all investigated dyes underwent photodegradation in acetone solution. Two different reaction paths were recognised in this solvent, depending on the nature and position of the substituting groups on the second aromatic ring, both involving the formation and subsequent fragmentation of organic free radicals, as suggested by the strong inhibiting effect of molecular oxygen on the photodegradation rate.
articolo
2001
Caronna, Tullio; Fontana, Francesca; Marcandalli, Bruno; Selli, Elena
(2001). Photostability of substituted 4-diethylaminoazobenzenes [journal article - articolo]. In DYES AND PIGMENTS. Retrieved from https://hdl.handle.net/10446/241576
File allegato/i alla scheda:
File Dimensione del file Formato  
1-s2.0-S0143720801000031-main.pdf

Solo gestori di archivio

Versione: publisher's version - versione editoriale
Licenza: Licenza default Aisberg
Dimensione del file 167.79 kB
Formato Adobe PDF
167.79 kB Adobe PDF   Visualizza/Apri
Pubblicazioni consigliate

Aisberg ©2008 Servizi bibliotecari, Università degli studi di Bergamo | Terms of use/Condizioni di utilizzo

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10446/241576
Citazioni
  • Scopus 10
  • ???jsp.display-item.citation.isi??? 7
social impact