{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:WRUBVL4LQLZR2VBWLPBUGBIO2C","short_pith_number":"pith:WRUBVL4L","schema_version":"1.0","canonical_sha256":"b4681aaf8b82f31d54365bc343050ed0b7d6d9ef9dba23b85fb3e2cab67d0a9a","source":{"kind":"arxiv","id":"2607.08634","version":1},"attestation_state":"computed","paper":{"title":"Triangulene-based diradicals as a blueprint for molecular quantum platforms with optical addressability and long spin coherence times","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"quant-ph","authors_text":"Alessandro Lunghi, Arup Sarkar, Cathal Hogan, Conor Ryan, Lorenzo A. Mariano","submitted_at":"2026-07-09T16:04:38Z","abstract_excerpt":"The identification of molecules that combine long spin coherence times and efficient spin-optical interfaces, ideally at room temperature, is pivotal towards the development of molecular quantum technology. By means of advanced first-principles methods, we here unravel the electronic structure for triangulene (1), its aza-cation derivative (2), and the crystal of 2,6,10-tri-tert-butyl-4,8,12-trimesityl-triangulene (3), and show that these organic diradicals possess a triplet ground state well separated from the first singlet excited state approaching 0.5 eV, closely resembling solid-state defe"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2607.08634","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-07-09T16:04:38Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"61859723f010c6d90b4173ba8d4b60518d6de862eb458ebb5b7e3fe5a3f666b6","abstract_canon_sha256":"a0622295c0ec6cf07dd09fcac0dfe4eb6fb9f5872ec5475dd3670ea0968b8908"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-10T01:19:56.082852Z","signature_b64":"38/8KNZbsfDqj5Hf+kzgO22SIpatfQLeMLjaredSJrR2ALjyFKGxilgdHb4Ah6MTUBCVh1J70trM+n3LvW6EDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b4681aaf8b82f31d54365bc343050ed0b7d6d9ef9dba23b85fb3e2cab67d0a9a","last_reissued_at":"2026-07-10T01:19:56.082435Z","signature_status":"signed_v1","first_computed_at":"2026-07-10T01:19:56.082435Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Triangulene-based diradicals as a blueprint for molecular quantum platforms with optical addressability and long spin coherence times","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"quant-ph","authors_text":"Alessandro Lunghi, Arup Sarkar, Cathal Hogan, Conor Ryan, Lorenzo A. Mariano","submitted_at":"2026-07-09T16:04:38Z","abstract_excerpt":"The identification of molecules that combine long spin coherence times and efficient spin-optical interfaces, ideally at room temperature, is pivotal towards the development of molecular quantum technology. By means of advanced first-principles methods, we here unravel the electronic structure for triangulene (1), its aza-cation derivative (2), and the crystal of 2,6,10-tri-tert-butyl-4,8,12-trimesityl-triangulene (3), and show that these organic diradicals possess a triplet ground state well separated from the first singlet excited state approaching 0.5 eV, closely resembling solid-state defe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.08634","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.08634/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2607.08634","created_at":"2026-07-10T01:19:56.082495+00:00"},{"alias_kind":"arxiv_version","alias_value":"2607.08634v1","created_at":"2026-07-10T01:19:56.082495+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.08634","created_at":"2026-07-10T01:19:56.082495+00:00"},{"alias_kind":"pith_short_12","alias_value":"WRUBVL4LQLZR","created_at":"2026-07-10T01:19:56.082495+00:00"},{"alias_kind":"pith_short_16","alias_value":"WRUBVL4LQLZR2VBW","created_at":"2026-07-10T01:19:56.082495+00:00"},{"alias_kind":"pith_short_8","alias_value":"WRUBVL4L","created_at":"2026-07-10T01:19:56.082495+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/WRUBVL4LQLZR2VBWLPBUGBIO2C","json":"https://pith.science/pith/WRUBVL4LQLZR2VBWLPBUGBIO2C.json","graph_json":"https://pith.science/api/pith-number/WRUBVL4LQLZR2VBWLPBUGBIO2C/graph.json","events_json":"https://pith.science/api/pith-number/WRUBVL4LQLZR2VBWLPBUGBIO2C/events.json","paper":"https://pith.science/paper/WRUBVL4L"},"agent_actions":{"view_html":"https://pith.science/pith/WRUBVL4LQLZR2VBWLPBUGBIO2C","download_json":"https://pith.science/pith/WRUBVL4LQLZR2VBWLPBUGBIO2C.json","view_paper":"https://pith.science/paper/WRUBVL4L","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2607.08634&json=true","fetch_graph":"https://pith.science/api/pith-number/WRUBVL4LQLZR2VBWLPBUGBIO2C/graph.json","fetch_events":"https://pith.science/api/pith-number/WRUBVL4LQLZR2VBWLPBUGBIO2C/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WRUBVL4LQLZR2VBWLPBUGBIO2C/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WRUBVL4LQLZR2VBWLPBUGBIO2C/action/storage_attestation","attest_author":"https://pith.science/pith/WRUBVL4LQLZR2VBWLPBUGBIO2C/action/author_attestation","sign_citation":"https://pith.science/pith/WRUBVL4LQLZR2VBWLPBUGBIO2C/action/citation_signature","submit_replication":"https://pith.science/pith/WRUBVL4LQLZR2VBWLPBUGBIO2C/action/replication_record"}},"created_at":"2026-07-10T01:19:56.082495+00:00","updated_at":"2026-07-10T01:19:56.082495+00:00"}