Red-shifting squaraine dyes in the near-infrared region using perimidine heterocycles: synthesis and optical properties | Synapse
March 25, 2026Open Access
Red-shifting squaraine dyes in the near-infrared region using perimidine heterocycles: synthesis and optical properties
Key Points
This research aims to synthesize squaraine dyes that exhibit red-shifting in the near-infrared region and evaluate their optical properties.
Synthesis of squaraine dyes through chemical reactions involving perimidine heterocycles.
Characterization of optical properties including absorption spectra and molar absorptivity measurements.
Comparison of red-shifting behavior in newly synthesized dyes.
The synthesized squaraine dyes displayed significant red-shifting in their absorption spectra.
Dyes exhibited high molar absorptivity, enhancing their effectiveness as near-infrared probes.
Structural modifications using perimidine heterocycles were successful in tuning optical properties.
Abstract
Squaraine dyes are an important class of near-infrared (NIR) probes due to their strong absorption, high molar absorptivity, and structural tunability.