Related Experiment Video
Updated: Jun 23, 2026

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
Published on: December 27, 2018
Two- and three-photon absorption of organic ionic pyrylium based materials
Prakash Chandra Jha1, Yi Luo, Ioannis Polyzos
1Theoretical Chemistry, Royal Institute of Technology, AlbaNova, S-106 91 Stockholm, Sweden.
Novel pyrylium dyes show promise for three-dimensional data storage. Their two- and three-photon absorption properties were theoretically studied and experimentally validated for optical memory applications.
Area of Science:
- Materials Science
- Photochemistry
- Optical Engineering
Background:
- Pyrylium dyes are explored as novel materials for advanced data storage solutions.
- Multiphoton absorption is a key phenomenon for high-density three-dimensional optical data recording.
Purpose of the Study:
- To investigate the two- and three-photon absorption properties of pyrylium dyes for 3D data storage.
- To theoretically analyze and experimentally validate the spectroscopic characteristics of these pyrylium dyes.
Main Methods:
- Computational studies of electronic absorption and multiphoton properties.
- Experimental spectroscopic measurements (absorption spectra, two-photon and three-photon absorption).
- Comparative analysis of theoretical and experimental results.
Main Results:
- Detailed exploration of substituent effects (electron-donating/withdrawing groups), counteranions, and solvent polarity on dye properties.
- Strong agreement between computed and experimental spectroscopic data.
- Demonstrated suitability of pyrylium dyes for 3D optical data storage.
Conclusions:
- The studied pyrylium dyes are viable candidates for multiphoton 3D data storage.
- Computed two- and three-photon data can be reliably used in simulations for optical memory applications.
- Understanding substituent and environmental effects is crucial for optimizing dye performance.
More Related Videos
14:11Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
Published on: June 10, 2021
08:51Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
Published on: October 24, 2017
Related Concept Videos
Photoluminescence: Applications
UV–Vis Spectroscopy of Conjugated Systems
One of the factors influencing λmax is the extent of conjugation in the...
Infrared (IR) Spectroscopy: Overview
Different compounds display unique properties due to their...
IR Absorption Frequency: Hybridization
Among the sp, sp2, and sp3 hybridized orbitals, sp orbitals have the maximum s character (50%). Consequently, the electrons are held more closely to the nucleus, resulting in stronger and shorter C–H bonds that stretch at a...
Photoluminescence: Fluorescence and Phosphorescence
A pair of electrons in a...
Molecular Spectroscopy: Absorption and Emission