Title : ( Photophysical and nonlinear optical properties of carmine encapsulation compared with ionic solutions and environmental polarity )
Authors: Tina Moharrahmadi , Soheil SHarifi ,Access to full-text not allowed by authors
Abstract
The nonlinear absorption coefficient (β) and nonlinear refractive index (n2) of Carmine Encapsulation (CR-Cap) with H2O/n-heptane/AOT solutions were investigated using a z-scan instrument. The transparent solution is made of water droplets containing carmine (CR), which are uniformly located in the continuous phase of n-heptane. The effects of Cetrimonium bromide (CTAB), NaCl, and NaOH on the β and n2 values of CR in aqueous solution are studied and compared with CR-Cap. The values of β and n2 for the CR-Cap have increased by 9 and 4.4 times, respectively, compared to those in its aqueous solution. The absorbance value and Rayleigh scattering (RS) change with environmental properties, while the optical gap is obtained as a constant 2.1 eV. The encapsulated CR has high RS and β values, which is caused by the increased polarizability of the molecule as a result of encapsulation, while aqueous solutions have low RS and β values. With quantum perturbation calculation, it is demonstrated that encapsulation increases the ground state dipole moment of CR compared to the aqueous solution. CR-Cap can be used as a photosensitizer in photodynamic therapy or optical devices.
Keywords
, Rayleigh scattering · Nonlinear optical properties · z, scan · Laser ·Encapsulation@article{paperid:1101613,
author = {Moharrahmadi, Tina and SHarifi, Soheil},
title = {Photophysical and nonlinear optical properties of carmine encapsulation compared with ionic solutions and environmental polarity},
journal = {Optical and Quantum Electronics},
year = {2025},
volume = {57},
number = {2},
month = {February},
issn = {0306-8919},
keywords = {Rayleigh scattering · Nonlinear optical properties · z-scan · Laser ·Encapsulation},
}
%0 Journal Article
%T Photophysical and nonlinear optical properties of carmine encapsulation compared with ionic solutions and environmental polarity
%A Moharrahmadi, Tina
%A SHarifi, Soheil
%J Optical and Quantum Electronics
%@ 0306-8919
%D 2025