Thermo-optical properties of AIE dye upon restriction of lntramolecular motion

Aggregation Induced Emission (AIE) is an interesting photophysical phenomenon by which non-emissive molecules in solution become emissive in solid state. It overcomes the demerits of Aggregation Caused Quenching (ACQ) effect shown by most fluorophores. Restriction of Intramolecular Motion (RIM) or s...

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Bibliographic Details
Main Authors: Lakshmi, R., Gopinath, Pramod
Format: Conference Proceeding
Language:English
Subjects:
Chemical compounds
Decay
Dyes
Optical properties
Polymer matrix composites
Thermal lensing
Online Access:Get full text
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Summary:Aggregation Induced Emission (AIE) is an interesting photophysical phenomenon by which non-emissive molecules in solution become emissive in solid state. It overcomes the demerits of Aggregation Caused Quenching (ACQ) effect shown by most fluorophores. Restriction of Intramolecular Motion (RIM) or structural rigidification and thereby reducing non-radiative decay is the basic principle behind AIE mech anism. This work verifies the RIM mechanism in AIE dyes using dual beam mode match thermal lens technique. Thermal lens signal which is considered as a measure of non­ radiative decay, is found to decrease by purposeful restriction of intramolecular motion in AIE dyes, achieved by changing binary solvent’s volume ratio (Acetonitryl:Water) and by dispersing it in polymer composite.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0158566