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Acc Chem Res. 2005 Jun;38(6):449-59.

Chemistry of squaraine-derived materials: near-IR dyes, low band gap systems, and cation sensors.

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Photosciences and Photonics Division, Regional Research Laboratory, CSIR, Trivandrum, 695019, India.


Squaraines belong to an important class of organic dyes with intense absorption and emission properties in the visible to near-IR wavelength range. The optical properties of squaraines, which are sensitive to the surrounding medium, make them ideal candidates to photophysists to study the excited-state properties and to material chemists for designing a variety of materials that are useful for wide-ranging applications. The present Account pertains to the recent developments in the materials chemistry of squaraines, highlighting our contributions to the study of squaraine-based near-IR dyes, low band gap polymers, and cation sensors.


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