Effect of accumulated radiation dose on pulse radiolysis conductivity transients in a mesomorphic octa-n-alkoxy-substituted phthalocyanine

Autor:	Pieter G. Schouten, John M. Warman, Matthijs P. de Haas
Rok vydání:	1993
Předmět:	Transition temperature Enthalpy General Engineering Analytical chemistry Conductivity chemistry.chemical_compound Differential scanning calorimetry chemistry Phase (matter) Radiolysis Alkoxy group Phthalocyanine Physical and Theoretical Chemistry Nuclear chemistry
Zdroj:	The Journal of Physical Chemistry. 97:9863-9870
ISSN:	1541-5740 0022-3654
DOI:	10.1021/j100140a051
Popis:	The transient conductivity induced by nanosecond pulse radiolysis of octa-n-nonyloxyphthalocyanine has been studied as a function of accumulated radiation dose, ΣD, from 10 Gy to 250 kGy. The end-of-pulse conductivity, Δσ eop /D, is unaffected by ΣD up to 150 kGy. Above this, Δσ eop /D begins to decrease and at 250 kGy is 65% of the low-dose value. An increase in the rate of decay of the transient conductivity in the solid state can be observed at values of ΣD as low as 10 kGy. On heating to the liquid crystalline phase and resolidifying, the conductivity decay returns to that found for the virgin material. However, Δσ eop /D remains low
Databáze:	OpenAIRE
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