Published March 2004 | Version v1
Journal article Metadata-only

Deactivation of O2 (1Δg) by diphthalocyanines of rare-earth metals

Creators

  • 1. Rossijskaya Akademiya Nauk, Inst. Khimii Rastvorov, Ivanovo (Russian Federation)

Description

Catalytic activity of diphthalocyanines of some rare earths (Ln-Phc2; Ln=Pr, Nd, Eu, Ho, Er, Lu) in reactions of singlet molecular oxygen (1O2) deactivation was studied by the method of luminescence spectroscopy. Kinetic data on the rates of interaction between Ln-Phc2 and 1O2 in benzene solutions were obtained in the course of experiments on 1O2 luminescence quenching, which is sensibilized by anthracene. It is shown that the rate of 1O2 deactivation actually does not depend on metal nature, being controlled by diffusion. High oxidation resistance of Ln-Phc2 is pointed out

Abstract (Russian)

Методом люминесцентной спектроскопии изучена каталитическая активность дифталоцианинов некоторых редкоземельных элементов (Ln-Phc2; Ln=Pr, Nd, Eu, Ho, Er, Lu) в реакциях дезактивации синглетного молекулярного кислорода (1O2). Кинетичские данные о скоростях взаимодействия Ln-Phc2 с 1O2 в бензольных растворах получены в экспериментах по тушению люминесценции 1O2, сенсибилизированной антраценом. Показано, что скорость дезактивации 1O2 практически не зависит от природы металла и контролируется диффузией. Отмечена высокая устойчивость Ln-Phc2 к окислению

Additional details

Additional titles

Original title (Russian)
Дезактивация О

Publishing Information

Journal Title
Zhurnal Fizicheskoj Khimii
Journal Volume
78
Journal Issue
3
Journal Page Range
p. 575-576
ISSN
0044-4537
CODEN
ZFKHA9

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
37049745
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
BENZENE; CHEMICAL REACTION KINETICS; DE-EXCITATION; DIFFUSION; EXCITED STATES; LUMINESCENCE; OXYGEN; PHTHALOCYANINES; RARE EARTH COMPLEXES; SOLUTIONS; STABILITY
Descriptors DEC
AROMATICS; COMPLEXES; DISPERSIONS; DYES; ELEMENTS; EMISSION; ENERGY LEVELS; ENERGY-LEVEL TRANSITIONS; HETEROCYCLIC COMPOUNDS; HOMOGENEOUS MIXTURES; HYDROCARBONS; KINETICS; MIXTURES; NONMETALS; ORGANIC COMPOUNDS; PHOTON EMISSION; REACTION KINETICS

Optional Information

Notes
12 refs., 2 figs., 1 tab.