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However, the use of a transition\u2010metal complex for LPL materials has not been explored because it can also shorten the emission lifetime by accelerating the phosphorescence decay. Here, we report a new class of LPL materials by doping a monovalent Au\u2010carbene complex into a boron\u2010embedded molecular host. The donor\u2010acceptor systems exhibit photoluminescence with both high efficiencies (&gt;57\u2009%) and long lifetimes (ca. 40\u2005ms) at room temperature. It is revealed that the Au atom promotes the population of low\u2010lying triplet excited states of the host aggregate (T\n                    <jats:sub>1<\/jats:sub>\n                    *) which can be converted into the charge\u2010transfer (CT) state, thereby resulting in afterglow luminescence. Moreover, the use of a chirality unit on the guest molecule results in the LPL being circularly polarized. This work illustrates that transition\u2010metal complexes can be used for developing organic afterglow systems by exquisite control over the excited state mechanism.\n                  <\/jats:p>","DOI":"10.1002\/anie.202312927","type":"journal-article","created":{"date-parts":[[2023,9,30]],"date-time":"2023-09-30T03:18:28Z","timestamp":1696043908000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":27,"title":["Long\u2010Persistent Circularly Polarized Luminescence from a Host\u2010Guest System Regulated by the Multiple Roles of a Gold(I)\u2010Carbene Motif"],"prefix":"10.1002","volume":"62","author":[{"given":"Fei\u2010Hu","family":"Yu","sequence":"first","affiliation":[{"name":"Key Laboratory of Photochemical Conversion and Optoelectronic Materials &amp; CAS-HKU Joint Laboratory on New Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences  Beijing 100190 P.R. 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