Molecular state and distribution of fullerenes entrapped in sol-gel samples

The Journal of Physical Chemistry. B
C D TranSanthosh Challa

Abstract

A novel synthetic method that can encapsulate fullerene molecules (pure C60, pure C70, or their mixture) over a wide range of concentrations ranging from micromolar to millimolar in hybrid glass by a sol-gel method without any time-consuming, complicated, and unwanted extra steps (e.g., addition of a surfactant or derivatization of the fullerenes) has been successfully developed. The molecular state and distribution of encapsulated fullerene molecules in these sol-gel samples were unequivocally characterized using newly developed multispectral imaging techniques. The high sensitivity (single-pixel resolution) and ability of these instruments to record multispectral images at different spatial resolutions (approximately 10 microm with the macroscopic instrument and approximately 0.8 microm with the microscopic instrument) make them uniquely suited for this task. Specifically, the imaging instruments can be used to simultaneously measure multispectral images of sol-gel-encapsulated C60 and C70 molecules at many different positions within a sol-gel sample in an area either as large as 3 mm x 4 mm (with the macroscopic imaging instrument) or as small as 0.8 microm x 0.8 microm (with the microscopic instrument). The absorption spect...Continue Reading

References

Mar 16, 2001·Analytical Chemistry·O KhaitC D Tran
Apr 11, 2001·Fresenius' Journal of Analytical Chemistry·C D Tran
Nov 1, 2005·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Chieu D TranSanthosh Challa

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Citations

Jul 28, 2010·Physical Chemistry Chemical Physics : PCCP·Sylvie BlancSylvie Lacombe
Apr 17, 2013·Chemistry : a European Journal·Theodoros TsoufisDimitrios Gournis

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