Study on the Thermochromism of Nickel Stearate and Pyrogallic Acid

doi:10.7517/j.issn.1674-0475.2007.01.50

Imaging Science and Photochemistry ›› 2007, Vol. 25 ›› Issue (1): 50-56.DOI: 10.7517/j.issn.1674-0475.2007.01.50

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Study on the Thermochromism of Nickel Stearate and Pyrogallic Acid

LIANG Hai-yan^1,2, LI Jin-pei¹

1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, P.R.China;
2. Graduate School of Chinese Academy of Sciences, Beijing 100039, P.R.China

Received:2006-09-12 Revised:2006-10-19 Online:2007-01-23 Published:2007-01-23

Abstract

Abstract: Thermochromism of nickel stearate(NiSt₂) and pyrogallic acid(PGA)was reported.The optical density of polyvinyl alcohol coating of NiSt₂ plus PGA increased linearly with raise of temperature and prolong of time.According to the solubility and absorption spectrum,a molecular compound may have been formed by NiSt₂ and PGA during the heating process,and this molecular compound may form one or more kinds of molecular aggregator in solvent by increasing its concentration.The molecular aggregator lead to a new and broad absorption in visible region.

Key words: nickel stearate, thermochromism, pyrogallic acid, absorption spectrum

CLC Number:

LIANG Hai-yan, LI Jin-pei. Study on the Thermochromism of Nickel Stearate and Pyrogallic Acid[J]. Imaging Science and Photochemistry, 2007, 25(1): 50-56.

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Study on the Thermochromism of Nickel Stearate and Pyrogallic Acid

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