{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,20]],"date-time":"2026-08-20T12:24:36Z","timestamp":1787228676943,"version":"build-2736575974"},"reference-count":70,"publisher":"American Chemical Society (ACS)","issue":"33","license":[{"start":{"date-parts":[[2026,8,5]],"date-time":"2026-08-05T00:00:00Z","timestamp":1785888000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/100006151","name":"Basic Energy Sciences","doi-asserted-by":"publisher","award":["449A"],"award-info":[{"award-number":["449A"]}],"id":[{"id":"10.13039\/100006151","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["DMR-2440763"],"award-info":[{"award-number":["DMR-2440763"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,8,20]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Observations of coherence in light-harvesting pigment\u2013protein complexes have sparked significant interest in their role in energy transfer processes. However, resolving and understanding the origin of coherence in photosynthetic complexes has been challenging due to their structural complexity and overlapping spectral signals. Water-soluble chlorophyll-binding protein (WSCP), which binds only four chlorophyll molecules, offers a minimal model to study coherence and exciton dynamics. Using two-dimensional electronic-vibrational (2DEV) spectroscopy, we identify distinct excited-state features that exhibit ultrafast downhill energy transfer. In addition, we observe oscillations in the excited-state absorption signals at 284 cm\u20131, which are attributed to vibronic coherence due to their extended coherence lifetime and dominant appearance in the excited electronic state. This observation in 2DEV spectra is potentially enabled by coherence-to-population transfer, where the population dynamics reflect the oscillation of coherence. Our first-principles calculations predict low-frequency vibrational modes, which may contribute to the observed oscillations. These findings provide insight into energy transfer in natural pigment\u2013protein complexes and demonstrate 2DEV spectroscopy as a probe of coherence.<\/jats:p>","DOI":"10.1021\/acs.jpcb.6c02486","type":"journal-article","created":{"date-parts":[[2026,8,5]],"date-time":"2026-08-05T19:02:06Z","timestamp":1785956526000},"page":"8363-8372","source":"Crossref","is-referenced-by-count":0,"title":["Vibronic Coherence\nin a Minimal Pigment\u2013Protein\nComplex Probed by Two-Dimensional Electronic-Vibrational Spectroscopy"],"prefix":"10.1021","volume":"130","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6830-409X","authenticated-orcid":true,"given":"Kunyan","family":"Zhang","sequence":"first","affiliation":[{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2260-4572","authenticated-orcid":true,"given":"Mao-Rui","family":"Cai","sequence":"additional","affiliation":[{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5673-7648","authenticated-orcid":true,"given":"Trisha","family":"Bhagde","sequence":"additional","affiliation":[{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]},{"name":"Lawrence Berkeley National Laboratory , , , ,","place":["Berkeley, California, United States, 94720"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lam","family":"Lam","sequence":"additional","affiliation":[{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Benran","family":"Zhang","sequence":"additional","affiliation":[{"name":"University of Southern California , , , ,","place":["Los Angeles, California, United States, 90089"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chih-En","family":"Hsu","sequence":"additional","affiliation":[{"name":"University of Southern California , , , ,","place":["Los Angeles, California, United States, 90089"]},{"name":"Tamkang University , , Tamsui, ,","place":["New Taipei, Taiwan, 251301"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zien","family":"Zhu","sequence":"additional","affiliation":[{"name":"University of Southern California , , , ,","place":["Los Angeles, California, United States, 90089"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0986-9015","authenticated-orcid":true,"given":"Masakazu","family":"Iwai","sequence":"additional","affiliation":[{"name":"Lawrence Berkeley National Laboratory , , , ,","place":["Berkeley, California, United States, 94720"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shigekazu","family":"Takahashi","sequence":"additional","affiliation":[{"name":"Yasuda Women\u2019s University , , 6-13-1 Yasuhigashi , Asaminami-ku, ,","place":["Hiroshima, Japan, 731-0153"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4341-0336","authenticated-orcid":true,"given":"Quanwei","family":"Li","sequence":"additional","affiliation":[{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-0524-8222","authenticated-orcid":true,"given":"Shiun-Jr","family":"Yang","sequence":"additional","affiliation":[{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3851-9241","authenticated-orcid":true,"given":"Zhenglu","family":"Li","sequence":"additional","affiliation":[{"name":"University of Southern California , , , ,","place":["Los Angeles, California, United States, 90089"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0847-1838","authenticated-orcid":true,"given":"Graham R.","family":"Fleming","sequence":"additional","affiliation":[{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]},{"name":"Lawrence Berkeley National Laboratory , , , 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Phys. Chem. A"},{"key":"2026082007200368300_cit3","doi-asserted-by":"publisher","first-page":"327","DOI":"10.1146\/annurev-physchem-052516-050602","article-title":"Vibrational\nand nonadiabatic coherence in 2D electronic spectroscopy, the Jahn\u2013Teller\neffect, and energy transfer","volume":"69","author":"Jonas","year":"2018","journal-title":"Annu. Rev. Phys.\nChem."},{"key":"2026082007200368300_cit4","doi-asserted-by":"publisher","first-page":"1203","DOI":"10.1073\/pnas.1211157110","article-title":"Electronic resonance with anticorrelated\npigment vibrations drives photosynthetic energy transfer outside the\nadiabatic framework","volume":"110","author":"Tiwari","year":"2013","journal-title":"Proc. Natl. Acad. 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