The electrical conductivity, optical absorption, EPR, magnetic susceptibility, vibration spectroscopic and thermal characteristics of doped nonconjugated conductive polymers are similar to those of metallic quantum dots, provided a subnanometer dimension is considered. The nonlinear optical characteristics, in particular, quadratic electro-optic effect, electro-absorption and two-photon absorption coefficients as measured for these systems are the largest known for any material. Recently, these nonlinearities have been compared with measured nonlinearities in metal (gold) nanoparticles within transparent dielectric media. Overall, the third order susceptibility was found to increase as  where d is the diameter of nanoparticle. Nonconjugated conductive polymers uniquely represent metallic quantum dots of subnanometer dimensions.

nonconjugated conductive polymers, metallic quantum dots of subnanometer dimensions, nonlinear optics, Kerr coefficients, two-photon absorption.

Received: April 11, 2024; Accepted: May 24, 2024; Published: June 19, 2024

How to cite this article: Mrinal Thakur, Organic metallic quantum dots of subnanometer dimensions based on nonconjugated conductive polymers; nonlinear optical properties, International Journal of Materials Engineering and Technology 23(1) (2024), 57-80. http://dx.doi.org/10.17654/0975044424004

This Open Access Article is Licensed under Creative Commons Attribution 4.0 International License

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