Efficient spirobifluorene-core electron-donor material for application in solution-processed organic solar cells

Highly Conjugated Three-Dimensional Covalent Organic Frameworks Based on Spirobifluorene for Perovskite Solar Cell Enhancement

“…First, we computationally studied model compounds C (Figure A) and F (Figure D) and found photoinduced donor–acceptor (D-A) charge-transfer (CT) characters very similar to those of the photoresponsive D-A type molecules with strong CT characters reported by Miyake et al − Indeed, spirobifluorene is considered as electron-donor , whereas phenyl/biphenyl groups are electron acceptors. , Additionally, we observed a low-lying symmetry-breaking CT state in model compound C (Figure A). While the symmetry-breaking CT character is very common in A-D-A scaffolds, what interested us is that this character indicates the excited electrons could transfer freely through the central sp 3 of the spirobifluorene moiety.…”

“…Mechanistic Studies of Perovskite−SP-3D-COF Interactions: From a Computational Perspective. The close First, we computationally studied model compounds C (Figure 8A) and F (Figure 8D) and found photoinduced donor−acceptor (D-A) charge-transfer (CT) characters very similar to those of the photoresponsive D-A type molecules with strong CT characters reported by Miyake et al 50−54 Indeed, spirobifluorene is considered as electron-donor 37,55 whereas phenyl/biphenyl groups are electron acceptors. 53,56 Additionally, we observed a low-lying symmetry-breaking CT state in model compound C (Figure 8A).…”

Planar D-π-A Configured Dimethoxy Vinylbenzene Based Small Organic Molecule for Solution-Processed Bulk Heterojunction Organic Solar Cells

“…It is notable that the fabricated BHJ-OSC exhibits a relatively high FF, without the addition of additives or promotors in the active layer. Generally, the FF in organic solar cells (OSCs) relies on the surface properties of semiconducting materials, like charge mobility and the impact of morphology of the active layer [37,38]. Herein, a considerable advancement in the morphology of the active layer of DVB-T-ID:PC61BM (1:2, w/w) at the nanoscale level delivers a high FF, as discussed in AFM studies.…”

Studies on the synthesis of tetrahydropyrans via oxa-Michael addition leading towards the total synthesis of Montanacin D

“…The harsh conditions that involve heating the substrate in concentrated hydrochloric acid could be the reason for the disintegration of the thiophene ring. Alane, which was generated in-situ with LiAlH4 and AlCl3, proved to be a superior method [66][67][68] for the reduction of the ketone intermediate, and yielded 3.13 in an excellent yield of 80% over two steps.…”