{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T07:48:36Z","timestamp":1791618516167,"version":"4.3.4"},"reference-count":67,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T00:00:00Z","timestamp":1791504000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T00:00:00Z","timestamp":1791504000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100001869","name":"Academia Sinica","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001869","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["chemistry-europe.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Chemistry A European J"],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    \u03c0\u2013\u03c0 stacking interactions are central to supramolecular assembly, material properties, and biomolecular organization. However, their intrinsically weak nature and sensitivity to geometric variation make them difficult to quantify experimentally. Here, we introduce a new molecular torsional balance based on a 13,14\u2010diphenyl\u20106,7\u2010dihydrodibenzo[b,j][4,7]phenanthroline (DHDBPT) scaffold that simultaneously achieves rotational restriction and conformational flexibility. This feature enables quantitative measurements of \u03c0\u2013\u03c0 interactions across multiple stacking geometries. Fluorine substituents are installed as a reliable probe for rotamer equilibria through integration of\n                    <jats:sup>19<\/jats:sup>\n                    F NMR signals. Eighteen homodimeric and four heterodimeric torsional balances were synthesized and studied. Across the series of homo\u2010stacked and hetero\u2010stacked PAH dimers, the measured stabilizations range from 0.3 to over 2.0 kcal mol\u2212\n                    <jats:sup>1<\/jats:sup>\n                    and correlate strongly with interfacial \u03c0\u2010surface overlap. These results demonstrate that dispersion dominates PAH stacking even in solution, while contributions from other interactions are secondary. The DHDBPT torsional balance offers an energetic resolution of \u223c0.2 kcal mol\u2212\n                    <jats:sup>1<\/jats:sup>\n                    and structural resolution on the \u00c5 scale. It provides a general platform for interrogating weak noncovalent interactions with high precision.\n                  <\/jats:p>","DOI":"10.1002\/chem.71787","type":"journal-article","created":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T06:54:45Z","timestamp":1791615285000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Mapping the Energy Landscape of Polycyclic Aromatic Hydrocarbon \u03c0\u2013\u03c0 Stacking Using a High\u2010Precision Torsional Balance Based on the 13,14\u2010Diphenyl\u20106,7\u2010dihydrodibenzo[b,j][4,7]Phenanthroline Scaffold"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0009-0001-4273-7057","authenticated-orcid":false,"given":"Chi\u2010en","family":"Feng","sequence":"first","affiliation":[{"name":"Department of Chemistry National Central University  Taoyuan City Taiwan (ROC)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hsiu\u2010feng","family":"Lu","sequence":"additional","affiliation":[{"name":"Institute of Chemistry Academia Sinica  Taipei Taiwan (ROC)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chao\u2010ping","family":"Hsu","sequence":"additional","affiliation":[{"name":"Institute of Chemistry Academia Sinica  Taipei Taiwan (ROC)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0492-4705","authenticated-orcid":false,"given":"Chih\u2010hsiu","family":"Lin","sequence":"additional","affiliation":[{"name":"Institute of Chemistry Academia Sinica  Taipei Taiwan (ROC)"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,10,9]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"crossref","first-page":"523","DOI":"10.1021\/acs.cgd.8b01630","article-title":"The Nature and Applications of \u03c0\u2013\u03c0 Interactions: A Perspective","volume":"19","author":"Thakuria R.","year":"2019","journal-title":"Crystal Growth & Design"},{"key":"e_1_2_7_3_1","doi-asserted-by":"crossref","first-page":"121","DOI":"10.1016\/B978-0-12-409547-2.12485-0","volume-title":"Comprehensive Supramolecular Chemistry II","author":"Fagnani D. 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