Efficient electron transporting and panchromatic absorbing FRET cassettes based on aza-BODIPY and perylenediimide towards multiple metal FRET-Off sensing and ratiometric temperature sensing

Highly efficient FRET cassettes consisting of aza-BODIPY and perylenediimide show ratiometric temperature sensing, multiple metal sensing by ratiometric FRET-off and appreciable electron mobilities of ∼2–4 × 10⁻³ cm² V⁻¹ s⁻¹.