{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Xue YJ"],"funding":["National Science and Technology Council","Ministry of Education, Taiwan"],"pagination":["57481-57490"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC11503517"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["16(42)"],"pubmed_abstract":["In this work, we designed two nitrogen-bridged fluorene-based heptacyclic FNT and nonacyclic FNTT ladder-type structures, which were constructed by one-pot palladium-catalyzed Buchwald-Hartwig amination. FNT and FNTT were further end-capped by FIC acceptors to form two FNT-FIC and FNTT-FIC non-fullerene acceptors (NFAs), respectively. The two NFAs exhibit more red-shifted absorption and higher crystallinity compared to those of the corresponding carbon-bridged FCT-FIC and FCTT-FIC counterparts. Grazing incidence wide-angle X-ray scattering (GIWAXS) measurements reveal that the 2-butyloctyl groups on the nitrogen in the convex region of FNT-FIC interdigitate with the dioctyl groups on the fluorene in the concave region of another FNT-FIC, resulting in a lamellar packing structure with a <i>"],"journal":["ACS applied materials & interfaces"],"pubmed_title":["Nitrogen-Bridged Fused-Ring Nonacyclic and Heptacyclic A-D-A Acceptors for Organic Photovoltaics."],"pmcid":["PMC11503517"],"funding_grant_id":["110-2628- M-A49-001-MY3","112-2221-E-A49-002"],"pubmed_authors":["Xue YJ","Cheng YJ","Wang YC","Lu HC","Yeh LL","Tsai CL","Lu CF"],"additional_accession":[]},"is_claimable":false,"name":"Nitrogen-Bridged Fused-Ring Nonacyclic and Heptacyclic A-D-A Acceptors for Organic Photovoltaics.","description":"In this work, we designed two nitrogen-bridged fluorene-based heptacyclic FNT and nonacyclic FNTT ladder-type structures, which were constructed by one-pot palladium-catalyzed Buchwald-Hartwig amination. FNT and FNTT were further end-capped by FIC acceptors to form two FNT-FIC and FNTT-FIC non-fullerene acceptors (NFAs), respectively. The two NFAs exhibit more red-shifted absorption and higher crystallinity compared to those of the corresponding carbon-bridged FCT-FIC and FCTT-FIC counterparts. Grazing incidence wide-angle X-ray scattering (GIWAXS) measurements reveal that the 2-butyloctyl groups on the nitrogen in the convex region of FNT-FIC interdigitate with the dioctyl groups on the fluorene in the concave region of another FNT-FIC, resulting in a lamellar packing structure with a <i>","dates":{"release":"2024-01-01T00:00:00Z","publication":"2024 Oct","modification":"2025-04-26T00:10:47.27Z","creation":"2025-04-06T09:39:50.11Z"},"accession":"S-EPMC11503517","cross_references":{"pubmed":["39401936"],"doi":["10.1021/acsami.4c11466"]}}