{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,13]],"date-time":"2026-08-13T15:29:36Z","timestamp":1786634976411,"version":"build-2736575974"},"reference-count":53,"publisher":"Wiley","issue":"45","license":[{"start":{"date-parts":[[2026,5,15]],"date-time":"2026-05-15T00:00:00Z","timestamp":1778803200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,5,15]],"date-time":"2026-05-15T00:00:00Z","timestamp":1778803200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["advanced.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Advanced Science"],"published-print":{"date-parts":[[2026,8]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Achieving precise control over the solid\u2010state optical properties of carbon dots (CDs) remains a significant challenge, primarily due to aggregation\u2010caused quenching (ACQ) and their intrinsically narrow absorption. Herein, we establish a framework that links surface chemistry to aggregation behavior by demonstrating that precursor stoichiometry programs the surface functionality of CDs, which in turn dictates their packing geometry. By varying the molar ratio of 2,3\u2010diaminonaphthalene to\n                    <jats:italic>o<\/jats:italic>\n                    \u2010phthalaldehyde, CDs with distinct surface chemistries are engineered. Under aldehyde\u2010rich conditions, CDs with aldehyde\u2010enriched surfaces self\u2010assemble into ordered, layered structures through directional hydrogen bonding. This ordered arrangement effectively suppresses\n                    <jats:italic>\u03c0<\/jats:italic>\n                    \u2013\n                    <jats:italic>\u03c0<\/jats:italic>\n                    stacking and enables efficient red solid\u2010state fluorescence (SSF). Conversely, amine\u2010rich surfaces promote face\u2010to\u2010face\n                    <jats:italic>\u03c0<\/jats:italic>\n                    \u2013\n                    <jats:italic>\u03c0<\/jats:italic>\n                    stacking, leading to compact, spherical aggregates. Such dense packing establishes a continuous donor\u2013acceptor interface, facilitating broadband visible absorption through efficient intermolecular charge transfer (ICT). This work establishes a general design principle according to which aldehyde\u2010rich surfaces enable SSF, while amine\u2010rich surfaces confer broadband absorption and photothermal capability. Our findings demonstrate that precursor stoichiometry serves as a powerful tool for directing CDs aggregation and provides a unified platform for developing multifunctional CDs\u2010based materials.\n                  <\/jats:p>","DOI":"10.1002\/advs.75737","type":"journal-article","created":{"date-parts":[[2026,5,15]],"date-time":"2026-05-15T14:57:01Z","timestamp":1778857021000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Tailoring Multifunctional Carbon Dots via Precursor Stoichiometry: Switching Between Solid\u2010State Fluorescence and Broadband Absorption Through Aggregation Control"],"prefix":"10.1002","volume":"13","author":[{"given":"Gaixia","family":"Yang","sequence":"first","affiliation":[{"name":"National Joint Engineering Research Center for Highly\u2010Efficient Utilization Technology of Forestry Resources Southwest Forestry University  Kunming Yunnan China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hao","family":"Sun","sequence":"additional","affiliation":[{"name":"National Joint Engineering Research Center for Highly\u2010Efficient Utilization Technology of Forestry Resources Southwest Forestry University  Kunming Yunnan China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Defa","family":"Hou","sequence":"additional","affiliation":[{"name":"National Joint Engineering Research Center for Highly\u2010Efficient Utilization Technology of Forestry Resources Southwest Forestry University  Kunming Yunnan China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fulin","family":"Yang","sequence":"additional","affiliation":[{"name":"National Joint Engineering Research Center for Highly\u2010Efficient Utilization Technology of Forestry Resources Southwest Forestry University  Kunming Yunnan China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuan","family":"Zou","sequence":"additional","affiliation":[{"name":"National Joint Engineering Research Center for Highly\u2010Efficient Utilization Technology of Forestry Resources Southwest Forestry University  Kunming Yunnan China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bei","family":"Zhou","sequence":"additional","affiliation":[{"name":"National Joint Engineering Research Center for Highly\u2010Efficient Utilization Technology of Forestry Resources Southwest Forestry University  Kunming Yunnan China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lanxiang","family":"Liu","sequence":"additional","affiliation":[{"name":"National Joint Engineering Research Center for Highly\u2010Efficient Utilization Technology of Forestry Resources Southwest Forestry University  Kunming Yunnan China"},{"name":"Yunnan Key Laboratory of Breeding and Utilization of Resource Insects Key Laboratory of Protection and Utilization of Insects (National Forestry and Grassland Administration) Research Center of Engineering and Technology of Characteristic Forest Resources (National Forestry and Grassland Administration) Institute of Highland Forest Science Chinese Academy of Forestry  Kunming China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9950-8853","authenticated-orcid":false,"given":"Xu","family":"Lin","sequence":"additional","affiliation":[{"name":"National Joint Engineering Research Center for Highly\u2010Efficient Utilization Technology of Forestry Resources Southwest Forestry University  Kunming Yunnan China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guanben","family":"Du","sequence":"additional","affiliation":[{"name":"National Joint Engineering Research Center for Highly\u2010Efficient Utilization Technology of Forestry Resources Southwest Forestry University  Kunming Yunnan 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