{"doi":"10.1021/jacs.4c02386","title":"Regioselective On-Surface Synthesis of [3]Triangulene Graphene Nanoribbons","abstract":"High Resolution Image Download MS PowerPoint Slide The integration of low-energy states into bottom-up engineered graphene nanoribbons (GNRs) is a robust strategy for realizing materials with tailored electronic band structure for nanoelectronics. Low-energy zero-modes (ZMs) can be introduced into nanographenes (NGs) by creating an imbalance between the two sublattices of graphene. This phenomenon is exemplified by the family of [ n ]triangulenes ( n ∈ N ). Here, we demonstrate the synthesis of [3]triangulene-GNRs, a regioregular one-dimensional (1D) chain of [3]triangulenes linked by five-membered rings. Hybridization between ZMs on adjacent [3]triangulenes leads to the emergence of a narrow band gap, E g,exp ∼ 0.7 eV, and topological end states that are experimentally verified using scanning tunneling spectroscopy. Tight-binding and first-principles density functional theory calculations within the local density approximation corroborate our experimental observations. Our synthetic design takes advantage of a selective on-surface head-to-tail coupling of monomer building blocks enabling the regioselective synthesis of [3]triangulene-GNRs. Detailed ab initio theory provides insights into the mechanism of on-surface radical polymerization, revealing the pivotal role of Au–C bond formation/breakage in driving selectivity.","journal":"Journal of the American Chemical Society","year":2024,"id":421934,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":28,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9499,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2024-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":863144,"name":"Peter H. Jacobse","orcid":"0000-0002-0777-6050","position":1,"is_corresponding":false},{"id":863145,"name":"Jingwei Jiang","orcid":"0000-0002-0949-4401","position":2,"is_corresponding":false},{"id":1214937,"name":"Joaquim Jornet-Somoza","orcid":"0000-0002-6721-1393","position":3,"is_corresponding":false},{"id":1215437,"name":"Reis Dorit","orcid":null,"position":4,"is_corresponding":false},{"id":863146,"name":"Ziyi Wang","orcid":"0000-0003-1049-5038","position":5,"is_corresponding":false},{"id":1214938,"name":"Jiaming Lu","orcid":"0009-0009-2198-9050","position":6,"is_corresponding":false},{"id":863147,"name":"Ryan D. McCurdy","orcid":"0000-0001-7319-4836","position":7,"is_corresponding":false},{"id":1214939,"name":"Weichen Tang","orcid":"0000-0002-1945-5369","position":8,"is_corresponding":false},{"id":267997,"name":"A. Rubio","orcid":"0000-0003-2060-3151","position":9,"is_corresponding":false},{"id":622967,"name":"Steven G. Louie","orcid":"0000-0003-0622-0170","position":10,"is_corresponding":false},{"id":755840,"name":"Michael F. Crommie","orcid":"0000-0001-8246-3444","position":11,"is_corresponding":false},{"id":459077,"name":"Felix R. Fischer","orcid":"0000-0003-4723-3111","position":12,"is_corresponding":false},{"id":1054823,"name":"Michael C. Daugherty","orcid":"0000-0002-3348-561X","position":0,"is_corresponding":true}],"reference_count":44,"raw_metadata":null,"created_at":"2026-07-19T01:57:41.370244Z","pmid":"38813680","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}