New conjugated molecular scaffolds based on [2,2]paracyclophane as electron acceptors for organic photovoltaic cells

Two conjugated molecules with a [2,2]paracyclophane core were designed as non-fullerene electron acceptors for photovoltaic cells. Using P3HT as the donor, a high power conversion efficiency (2.69%) is achieved for the blending thin film of 1b with P3HT, which is relatively high for solution-processed OPVs based on small molecular non-fullerene acceptors and P3HT as the electron donor.