Synthesis and solvatochromism of a NIR II emissive amphiphilic aza-BODIPY dye and its application as a colorimetric and fluorometric probe in sequential detection of Cu²⁺ and PO₄ ³.

ABSTRACT: The amphiphilic aza-BODIPY 1 bearing two N,N-dialkyl-amino groups at the para-positions of the 1,7-phenyl and two amino groups modified by a pair of hydrophilic chains at the para-positions at the 3,5-phenyl of the boron-azadipyrromethene core was synthesized and characterized. UV/Vis/NIR spectroscopic measurements indicated that the S₀-S₁ absorption band 1 reached up to 900 nm while its emission band reached up to 1200 nm. The solvatochromic properties of 1 was investigated by absorption and fluorescence spectroscopy and further analysed by the Lippert-Mataga equation. The results suggested a strong intramolecular charge transfer (ICT) effect of dye 1 stemming from the electron-donating amino groups, which was further confirmed by DFT calc

SUBMITTER: Liu M 

PROVIDER: S-EPMC12556065 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature