Buchwald-Hartwig Coupling at the Naphthalenediimide Core: Access to Dendritic, Panchromatic NIR Absorbers with Exceptionally Low Band Gap

• DOI: 10.1021/acs.orglett.8b03408
• Publication Date: 2018-11-30T14:15:15Z
• Authors: Jyoti Shukla; M. R. Ajayakumar; Pritam Mukhopadhyay
• Keywords: 01 natural sciences; 0104 chemical sciences

The first successful Buchwald-Hartwig reaction at the naphthalenediimide core is reported, leading to coupling of diverse secondary aromatic amines including dendritic donors. G1-dendrimer-based donor exhibit blackish color, providing access black absorbing systems. λonset values up 1070 nm was achieved, which maximum from a single NDI scaffold. These dyes also manifest multielectron reservoir properties. A total eight-redox states with band gap ∼0.95 eV accomplished.