Department of Chemistry and Biomolecular Science, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
Division of Instrumental Analysis, Life Science Research Center, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
Molecules. 2023 Jun 8;28(12):4650. doi: 10.3390/molecules28124650.
A novel anionic heptamethine cyanine (HMC) dye with two trifluoromethyl groups that selectively absorb near-infrared light is synthesized. When contrasted with previously studied anionic HMC dyes with substituents such as methyl, phenyl, and pentafluorophenyl groups, the trifluoromethylated dye displays a red-shifted maximum absorption wavelength (for instance, 948 nm in CHCl) along with enhanced photostability. Furthermore, HMC dyes with broad absorption in the near-infrared region are synthesized by combining a trifluoromethylated anionic HMC dye with a cationic HMC dye as a counterion.
合成了一种新型的阴离子七甲川菁（HMC）染料，带有两个三氟甲基基团，可选择性吸收近红外光。与之前研究的带有甲基、苯基和五氟苯基等取代基的阴离子 HMC 染料相比，三氟甲基化染料的最大吸收波长发生红移（例如，在 CHCl 中为 948nm），同时光稳定性增强。此外，通过将三氟甲基化的阴离子 HMC 染料与阳离子 HMC 染料作为抗衡离子结合，合成了在近红外区域具有宽吸收的 HMC 染料。
