Novel D–A–D based near-infrared probes for the detection of β-amyloid and Tau fibrils in Alzheimer’s disease

Abstract: Novel D–π–A–π–D probes were investigated for the detection of Aβ plaques and NFTs. The probes displayed remarkable optical properties, and DADNIR-2 possessed high affinity towards Tau and Aβ aggregates (Kd = 0.41 nM and 1.04 nM, respectively) with certain selectivity. DADNIR-2 could penetrate the BBB and label Aβ plaques in vivo.