Optical Properties of Nanocellulose and Nanocellulose-based Composites for Optoelectronic Applications

In this review, we first provided a brief overview of cellulose structures, categorizing various types of nanocellulose based on their production methods, and discussed different photonic structures such as cholesteric phases, photonic crystals, distributed Bragg reflectors, and inverse photonic structures. We then reviewed some models that predict optical properties, including refractive index, scattering, reflection, and birefringence, highlighting factors that can influence these properties, such as electric field, surface roughness, temperature, and density, among others. Following this, we explored recent advancements in predicting optical properties, particularly the use of AI-driven algorithms to enhance the prediction of optical behaviors in nanomaterials. Finally, we provided an in-depth discussion of the latest developments in nonlinear optical phenomena and chiroptical responses in nanocellulose-based materials, focusing on circularly polarized luminescence, structural colors, structural correlations, the impact of enantiomers, and more.