Nonlinear optical properties of mono-functional 1,2-dihydro-1,2-methanofullerene[60]-61-carboxylic acid /polymer composites

TL;DR

This study investigates the nonlinear optical properties of FCA/polymer composites using nanosecond laser pulses, revealing improved optical limiting performance and photoluminescence compared to pure FCA and C60.

Contribution

It introduces the use of FCA/polymer composites for enhanced nonlinear optical properties and discusses the sources of improved optical limiting behavior.

Findings

FCA/polymer composites exhibit about 35% lower limiting threshold.

FCA shows slightly stronger photoluminescence than C60.

Composite materials improve optical limiting performance.

Abstract

By using nanosecond laser pulses at 532-nm wavelength, we have studied the nonlinear optical properties of composites which consist of mono-functional 1,2-dihydro-1,2-methanofullerene[60]-61-carboxylic acid (FCA) and poly(styrene-co-4-vinylpyridine). The optical limiting performance of FCA itself is poorer than that of its parent C60, while FCA incorporated with polystyrene shows better optical limiting responses, with the limiting threshold reduced by about 35%. In addition, the FCA gives slightly stronger photoluminescence emission than that of both C60 and FCA/polymer composites. The possible sources for the improvement in the optical limiting are discussed.