Synthesis of Highly Fluorescent BODIPY-Based Nanocars

The convergent synthesis of inherently highly fluorescent nanocars incorporating 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY)-containing axles and p-carborane wheels is reported. These nanocars are expected to exhibit rolling motion with predetermined patterns over smooth surfaces, depending on their chassis. Their quantum yields of fluorescence (Phi(F) > 0.7) make them excellent candidates for imaging and tracking by single-molecule fluorescence microscopy. An analogue as a stationary control with tert-butyl groups instead of p-carborane wheels was also synthesized.