Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/10490
Title: Mechanism and Kinetics of the Photocatalyzed Oxidation of p-Phenylenediamines by Peroxydisulfate in the Presence of Tri-2,2'-bipyridylylruthenium(II)
Authors: Nickel, Ulrich 
Chen, Yao-Hong 
Schneider, Siegfried 
Silva, Maria I. 
Burrows, Hugh D. 
Formosinho, Sebastião J. 
Issue Date: Mar-1994
Publisher: American Chemical Society
Citation: The Journal of Physical Chemistry. 98:11 (1994) 2883-2888
Abstract: The autocatalytic oxidation ofp-phenylenediamines with peroxydisulfate can be strongly enhanced by irradiation in the presence of tri-2,2’-bipyridylylruthenium(II). R~( b p y ) 3~a+ct s as photosensitizer and photocatalyst. First, R~( b p y ) 3~is+ fo rmed by quenching excited R~*(bpy)3~w+it h S 2 0 ~ ~ T- .h en the ruthenium(II1) complex oxidizesp-phenylenediamine. The resulting R~( b p y ) 3~ca+n start the cycle again. The photocatalytic oxidation of N,N-diethyl-p-phenylenediaminea s well as the dark reactions were studied with stopped-flow techniques. The mechanism of this complex reaction is discussed in detail.
URI: http://hdl.handle.net/10316/10490
DOI: 10.1021/j100062a026
Rights: openAccess
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais

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