Doubly Strapped Zwitterionic NIR‐I and NIR‐II Heptamethine Cyanine Dyes for Bioconjugation and Fluorescence Imaging

Heptamethine cyanine dyes enable deep tissue fluorescence imaging in the near infrared (NIR) window. Small molecule conjugates of the benchmark dye ZW800‐1 have been tested in humans. However, long‐term imaging protocols using ZW800‐1 conjugates are limited by their instability, primarily because th...

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