Shcheslavskiy, Vladislav I., Saltiel, Solomon M., Ivanov, Denis A., Ivanov, Anatolii A., Petrusevich, Vladislav Y., Petrov, Georgi I. and Yakovlev, Vladislav V.
Nonlinear optics of molecular nanostructures in solution: Assessment of the size and nonlinear optical properties
Chemical Physics Letters, 429, (1-3), . (doi:10.1016/j.cplett.2006.07.071).
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Most of the known self-assembly processes occur in solution, where nanosized objects interact each other forming new structures. Their real-time characterization in terms of the size and optical properties of these objects is vital for understanding those interactions. We report a novel application of nonlinear optics to study molecular structures and assemblies. By measuring the power of the third harmonic generated in a solution of nanoparticles, we determined both the size and the third-order nonlinear optical susceptibility of those nanoparticles. The newly developed technique was successfully employed to observe the structural organization of collagen (type I) molecules in solution.
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