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However, developing novel, efficient chiroptical waveguides remains challenging, due to the difficulty of integrating strong intrinsic chiroptical activity with efficient directional light transport within a single crystalline material. Here, we report a new enantiomeric pair of chiral hybrid metal halides, (\n                    <jats:italic>S\/R<\/jats:italic>\n                    \u2010C\n                    <jats:sub>5<\/jats:sub>\n                    H\n                    <jats:sub>14<\/jats:sub>\n                    N\n                    <jats:sub>2<\/jats:sub>\n                    )CuAgBr\n                    <jats:sub>4<\/jats:sub>\n                    (\n                    <jats:italic>S\/R<\/jats:italic>\n                    \u2010CuAg), featuring a one\u2010dimensional inorganic structure. Ag incorporation enhances photoluminescence quantum yield from 0.6% to 18.6%, while enabling bright CPL emissions with dissymmetry factors (\n                    <jats:italic>g<\/jats:italic>\n                    <jats:sub>lum<\/jats:sub>\n                    ) of \u00b1\u00a07\u00a0\u00d7\u00a010\n                    <jats:sup>\u22123<\/jats:sup>\n                    . The tightly packed inorganic lattice and highly anisotropic microstructure of\n                    <jats:italic>S\/R<\/jats:italic>\n                    \u2010CuAg exhibit a low optical loss coefficient of 9.6\u00a0\u00d7\u00a010\n                    <jats:sup>\u22123<\/jats:sup>\n                    \u00a0dB \u00b5m\n                    <jats:sup>\u22121<\/jats:sup>\n                    . Crucially, microrod crystals of\n                    <jats:italic>S\/R<\/jats:italic>\n                    \u2010CuAg function as efficient chiroptical waveguides, simultaneously emitting and propagating CPL under unpolarized light excitation. This work establishes chiral hybrid metal halides as a viable platform for circularly polarized waveguide applications.\n                  <\/jats:p>","DOI":"10.1002\/anie.202515434","type":"journal-article","created":{"date-parts":[[2025,9,18]],"date-time":"2025-09-18T05:23:41Z","timestamp":1758173021000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Circularly Polarized Luminescence Optical Waveguides Based on One\u2010Dimensional Hybrid Copper\u2013Silver Bromide Crystal"],"prefix":"10.1002","volume":"64","author":[{"given":"Yuxuan","family":"Wang","sequence":"first","affiliation":[{"name":"Department of Chemistry Southern University of Science and Technology (SUSTech)  Shenzhen 518055 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yi","family":"Wei","sequence":"additional","affiliation":[{"name":"Department of Chemistry Southern University of Science and Technology (SUSTech)  Shenzhen 518055 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaofan","family":"Xu","sequence":"additional","affiliation":[{"name":"Department of Chemistry Southern University of Science and Technology (SUSTech)  Shenzhen 518055 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Huimin","family":"Kang","sequence":"additional","affiliation":[{"name":"Department of Chemistry Southern University of Science and Technology (SUSTech)  Shenzhen 518055 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shizhe","family":"Ren","sequence":"additional","affiliation":[{"name":"Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences  Beijing 100190 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hilary","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Chemistry Southern University of Science and Technology (SUSTech)  Shenzhen 518055 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yong Sheng","family":"Zhao","sequence":"additional","affiliation":[{"name":"Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences  Beijing 100190 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1998-5527","authenticated-orcid":false,"given":"Zewei","family":"Quan","sequence":"additional","affiliation":[{"name":"Department of Chemistry Southern University of Science and Technology (SUSTech)  Shenzhen 518055 China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,9,17]]},"reference":[{"key":"e_1_2_5_1_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.adl0920"},{"key":"e_1_2_5_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202423395"},{"key":"e_1_2_5_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201703917"},{"key":"e_1_2_5_4_1","volume":"63","author":"Ren S.","year":"2024","journal-title":"Angew. 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