J-aggregates of meso-[2.2]paracyclophanyl-BODIPY dye for NIR-II imaging

Nat Commun. 2021 Apr 22;12(1):2376. doi: 10.1038/s41467-021-22686-z.

Abstract

J-aggregation is an efficient strategy for the development of fluorescent imaging agents in the second near-infrared window. However, the design of the second near-infrared fluorescent J-aggregates is challenging due to the lack of suitable J-aggregation dyes. Herein, we report meso-[2.2]paracyclophanyl-3,5-bis-N,N-dimethylaminostyrl BODIPY (PCP-BDP2) as an example of BODIPY dye with J-aggregation induced the second near-infrared fluorescence. PCP-BDP2 shows an emission maximum at 1010 nm in the J-aggregation state. Mechanism studies reveal that the steric and conjugation effect of the PCP group on the BODIPY play key roles in the J-aggregation behavior and photophysical properties tuning. Notably, PCP-BDP2 J-aggregates can be utilized for lymph node imaging and fluorescence-guided surgery in the nude mouse, which demonstrates their potential clinical application. This study demonstrates BODIPY dye as an alternate J-aggregation platform for developing the second near-infrared imaging agents.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Boron Compounds / administration & dosage
  • Boron Compounds / chemistry*
  • Cell Line, Tumor / transplantation
  • Disease Models, Animal
  • Fluorescence
  • Fluorescent Dyes / administration & dosage
  • Fluorescent Dyes / chemistry*
  • Humans
  • Infrared Rays
  • Intravital Microscopy / methods*
  • Lymphatic System / diagnostic imaging
  • Mice
  • Optical Imaging / methods*
  • Peritoneal Neoplasms / diagnostic imaging*
  • Peritoneal Neoplasms / pathology
  • Peritoneal Neoplasms / surgery
  • Video-Assisted Surgery / methods

Substances

  • 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene
  • Boron Compounds
  • Fluorescent Dyes