Heat trapping in a nano-layered microenvironment: estimation of temperature by thermal sensing molecules

Physical Chemistry Chemical Physics : PCCP
Vivek RamakrishnanHaruo Inoue

Abstract

We have previously found reversible photo-induced expansion and contraction of organic/inorganic clay hybrids, and even sliding of niobate nano-sheets at the macroscopic level of organic/inorganic niobate hybrids, induced by the molecular photo-isomerization of the polyfluoroalkylated azobenzene derivative (C3F-Azo-C6H) intercalated within the interlayer, which is viewed as an artificial muscle model unit. Based on systematic investigations of the steady state photo-isomerization and transient behavior of the reaction, we comprehended that the phenomena is caused by trapping of excess energy liberated during the isomerization, as well as the relaxation processes upon excitation of azobenzene chromophores in the interlayers of the hybrid. In this paper, quantitative estimation of transient 'heat' trapped in various microenvironments has been studied by each co-intercalation of temperature sensing dye molecules - rhodamine B (RhB) or tris(bipyridine)ruthenium(ii) chloride (Rubpy) with C3F-Azo-C6H within clay (SSA) nano-layers. The amount of dye molecules co-intercalated was kept to trace amounts that did not alter the bi-layered structure of the hybrid. The temperature of the microenvironment surrounding the probe molecules was e...Continue Reading

References

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Nov 3, 2009·Journal of the American Chemical Society·Yuichiro HoriKazuya Kikuchi
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Jan 28, 2017·Physical Chemistry Chemical Physics : PCCP·V RamakrishnanH Inoue
Sep 25, 2017·Chemical Reviews·Sirimuvva TadepalliSrikanth Singamaneni
Sep 3, 2019·Physical Chemistry Chemical Physics : PCCP·Syed Zahid HassanHaruo Inoue

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Methods Mentioned

BETA
X-ray

Software Mentioned

Rubpy

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