{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T01:55:29Z","timestamp":1791251729200,"version":"4.1.0"},"reference-count":51,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2025,5,24]],"date-time":"2025-05-24T00:00:00Z","timestamp":1748044800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Nazarbayev University","award":["20122022FD4110"],"award-info":[{"award-number":["20122022FD4110"]}]},{"name":"Nazarbayev University","award":["11022021CRP1501"],"award-info":[{"award-number":["11022021CRP1501"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Single-phase white-light-emitting materials, particularly 2D hybrid organic\u2013inorganic halide perovskites, have garnered significant attention due to their strong electron\u2013phonon interactions, which lead to broad luminescence and a notable Stokes shift resulting from self-trapped exciton recombination. However, 2D lead iodide perovskites typically display these characteristics poorly, restricting their efficiency as white-light emitters. This study presents a 2D lead iodide perovskite that incorporates a fluorinated \u03c0-conjugated aggregation-induced enhanced emission luminophore, FPCSA, as a bulky organic cation to create a quasi-2D perovskite. The FPCSA cation establishes a Type II energy level alignment with the lead iodide layer in the 2D perovskite, and a significant energy offset effectively suppresses charge transfer, enabling independent emission from both the organic and inorganic layers while facilitating self-trapped exciton formation. Under 315 nm UV excitation, this material demonstrates warm white-light emission with RGB triple-band photoluminescence stemming from the electronically decoupled FPCSA and perovskite layers. These findings provide a promising new method for designing efficient single-phase white-light-emitting materials for optoelectronic applications.<\/jats:p>","DOI":"10.3390\/ijms26115054","type":"journal-article","created":{"date-parts":[[2025,5,25]],"date-time":"2025-05-25T20:26:50Z","timestamp":1748204810000},"page":"5054","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Triple-Band Warm White-Light Emission from Type II Band-Aligned Aggregation-Induced Enhanced Emission Organic Cation-Incorporated Two-Dimensional Lead Iodide Perovskite"],"prefix":"10.3390","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8588-337X","authenticated-orcid":false,"given":"Almaz R.","family":"Beisenbayev","sequence":"first","affiliation":[{"name":"Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Igor","family":"Ivanov-Prianichnikov","sequence":"additional","affiliation":[{"name":"Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, Astana 010000, Kazakhstan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9454-9138","authenticated-orcid":false,"given":"Anatoly","family":"Peshkov","sequence":"additional","affiliation":[{"name":"Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tangsulu","family":"Adil","sequence":"additional","affiliation":[{"name":"Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Davit","family":"Hayrapetyan","sequence":"additional","affiliation":[{"name":"Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, Astana 010000, Kazakhstan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1306-5770","authenticated-orcid":false,"given":"Chang-Keun","family":"Lim","sequence":"additional","affiliation":[{"name":"Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,5,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2387","DOI":"10.1039\/b909057f","article-title":"Management of charges and excitons for high-performance white organic light-emitting diodes","volume":"39","author":"Wang","year":"2010","journal-title":"Chem. Soc. Rev."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"3391","DOI":"10.1039\/b816352a","article-title":"Progress and perspective of polymer white light-emitting devices and materials","volume":"38","author":"Wu","year":"2009","journal-title":"Chem. Soc. Rev."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"572","DOI":"10.1002\/adma.200902148","article-title":"Recent advances in white organic light-emitting materials and devices (WOLEDs)","volume":"22","author":"Kamtekar","year":"2010","journal-title":"Adv. Mater."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"833","DOI":"10.1021\/ja807996y","article-title":"White-light emitting hydrogen-bonded supramolecular copolymers based on \u03c0-conjugated oligomers","volume":"131","author":"Abbel","year":"2009","journal-title":"J. Am. Chem. Soc."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"301","DOI":"10.1038\/s41377-024-01618-8","article-title":"Color-conversion displays: Current status and future outlook","volume":"13","author":"Li","year":"2024","journal-title":"Light Sci. Appl."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"120183","DOI":"10.1016\/j.jlumin.2023.120183","article-title":"High-color-quality blue-light-pumped full-spectrum white-light-emitting diodes realized by efficient green-emitting CaY2HfScAl3O12: Ce3+ phosphors","volume":"264","author":"Li","year":"2023","journal-title":"J. Lumin."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"110869","DOI":"10.1016\/j.rser.2021.110869","article-title":"Potential substitutes for critical materials in white LEDs: Technological challenges and market opportunities","volume":"143","author":"Gaffuri","year":"2021","journal-title":"Renew. Sustain. Energy Rev."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1600147","DOI":"10.1002\/lpor.201600147","article-title":"White light-emitting diodes: History, progress, and future","volume":"11","author":"Cho","year":"2017","journal-title":"Laser Photonics Rev."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"3467","DOI":"10.1039\/c0cs00204f","article-title":"Electroluminescent materials for white organic light emitting diodes","volume":"40","author":"Farinola","year":"2011","journal-title":"Chem. Soc. Rev."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"205701","DOI":"10.1088\/1361-6528\/aab18e","article-title":"White light emitting device based on single-phase CdS quantum dots","volume":"29","author":"Li","year":"2018","journal-title":"Nanotechnology"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"8889","DOI":"10.1021\/acs.chemrev.8b00222","article-title":"Single-phase white-light-emitting and photoluminescent color-tuning coordination assemblies","volume":"118","author":"Pan","year":"2018","journal-title":"Chem. Rev."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"206","DOI":"10.1038\/s41377-021-00640-4","article-title":"Research progress of full electroluminescent white light-emitting diodes based on a single emissive layer","volume":"10","author":"Xiang","year":"2021","journal-title":"Light Sci. Appl."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"16601","DOI":"10.1021\/jp074868o","article-title":"Tunable luminescence properties of CaIn2O4: Eu3+ phosphors","volume":"111","author":"Liu","year":"2007","journal-title":"J. Phys. Chem. C"},{"key":"ref_14","first-page":"121","article-title":"Nanoparticle white-light emitter based on up-conversion demonstrated","volume":"39","author":"Burgess","year":"2005","journal-title":"Photonics Spectra"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"1372","DOI":"10.1039\/C3CS60314H","article-title":"How to produce white light in a single-phase host?","volume":"43","author":"Shang","year":"2014","journal-title":"Chem. Soc. Rev."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"1113","DOI":"10.1002\/adma.200601241","article-title":"High-efficiency white-light emission from a single copolymer: Fluorescent blue, green, and red chromophores on a conjugated polymer backbone","volume":"19","author":"Luo","year":"2007","journal-title":"Adv. Mater."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"1703918","DOI":"10.1002\/adfm.201703918","article-title":"Hydrogen-bonding-assisted intermolecular charge transfer: A new strategy to design single-component white-light-emitting materials","volume":"27","author":"Xie","year":"2017","journal-title":"Adv. Funct. Mater."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"1577","DOI":"10.1002\/smll.201000144","article-title":"Semiconductor-nanocrystals-based white light-emitting diodes","volume":"6","author":"Dai","year":"2010","journal-title":"Small"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"2717","DOI":"10.1038\/ncomms3717","article-title":"Efficient and tunable white-light emission of metal\u2013organic frameworks by iridium-complex encapsulation","volume":"4","author":"Sun","year":"2013","journal-title":"Nat. Commun."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"21107","DOI":"10.1021\/acs.inorgchem.2c03736","article-title":"Encapsulating organic dyes in metal\u2013organic frameworks for color-tunable and high-efficiency white-light-emitting properties","volume":"61","author":"Xu","year":"2022","journal-title":"Inorg. Chem."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"214441","DOI":"10.1016\/j.ccr.2022.214441","article-title":"Metal-organic frameworks for white light emission: From synthesis to device fabrication","volume":"459","author":"Chiu","year":"2022","journal-title":"Coord. Chem. Rev."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"1718","DOI":"10.1021\/ja411045r","article-title":"Self-assembly of broadband white-light emitters","volume":"136","author":"Dohner","year":"2014","journal-title":"J. Am. Chem. Soc."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"9465","DOI":"10.1039\/D2TC01472F","article-title":"Broadband white-light emission from a novel two-dimensional metal halide assembled by Pb\u2013Cl hendecahedrons","volume":"10","author":"Chen","year":"2022","journal-title":"J. Mater. Chem. C"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"238","DOI":"10.1038\/s41566-020-00743-1","article-title":"Efficient and bright white light-emitting diodes based on single-layer heterophase halide perovskites","volume":"15","author":"Chen","year":"2021","journal-title":"Nat. Photonics"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"6804","DOI":"10.1002\/adma.201600669","article-title":"Perovskite materials for light-emitting diodes and lasers","volume":"28","author":"Veldhuis","year":"2016","journal-title":"Adv. Mater."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"31575","DOI":"10.1021\/acsami.9b08407","article-title":"Lead-free halide perovskites and perovskite variants as phosphors toward light-emitting applications","volume":"11","author":"Luo","year":"2019","journal-title":"ACS Appl. Mater. Interfaces"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"17150","DOI":"10.1021\/acsnano.1c06849","article-title":"Perovskite white light emitting diodes: Progress, challenges, and opportunities","volume":"15","author":"Chen","year":"2021","journal-title":"ACS Nano"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"2852","DOI":"10.1021\/acs.chemmater.6b00847","article-title":"Ruddlesden\u2013Popper hybrid lead iodide perovskite 2D homologous semiconductors","volume":"28","author":"Stoumpos","year":"2016","journal-title":"Chem. Mater."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"619","DOI":"10.1021\/acs.accounts.7b00433","article-title":"White-light emission from layered halide perovskites","volume":"51","author":"Smith","year":"2018","journal-title":"Acc. Chem. Res."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"2771","DOI":"10.1039\/C7TC00366H","article-title":"Polaron self-localization in white-light emitting hybrid perovskites","volume":"5","author":"Cortecchia","year":"2017","journal-title":"J. Mater. Chem. C"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"225","DOI":"10.1007\/s12200-020-1051-x","article-title":"Self-trapped excitons in two-dimensional perovskites","volume":"13","author":"Li","year":"2020","journal-title":"Front. Optoelectron."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"679","DOI":"10.1016\/0022-3697(90)90144-5","article-title":"The self-trapped exciton","volume":"51","author":"Williams","year":"1990","journal-title":"J. Phys. Chem. Solids"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"1434","DOI":"10.1021\/acs.jpclett.8b00201","article-title":"Electrons, excitons, and phonons in two-dimensional hybrid perovskites: Connecting structural, optical, and electronic properties","volume":"9","author":"Straus","year":"2018","journal-title":"J. Phys. Chem. Lett."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"2934","DOI":"10.1021\/acs.jpclett.0c00578","article-title":"Broadband photoluminescence in 2D organic\u2013inorganic hybrid perovskites:(C7H18N2) PbBr4 and (C9H22N2) PbBr4","volume":"11","author":"Deng","year":"2020","journal-title":"J. Phys. Chem. Lett."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"12619","DOI":"10.1021\/jacs.9b04262","article-title":"Exciton self-trapping in hybrid lead halides: Role of halogen","volume":"141","author":"Gautier","year":"2019","journal-title":"J. Am. Chem. Soc."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"2089","DOI":"10.1021\/ja512833n","article-title":"Trap states in lead iodide perovskites","volume":"137","author":"Wu","year":"2015","journal-title":"J. Am. Chem. Soc."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"937","DOI":"10.1038\/s41563-024-01895-z","article-title":"Exciton polaron formation and hot-carrier relaxation in rigid Dion\u2013Jacobson-type two-dimensional perovskites","volume":"23","author":"Biswas","year":"2024","journal-title":"Nat. Mater."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"2344","DOI":"10.1038\/s41467-020-15970-x","article-title":"Extrinsic nature of the broad photoluminescence in lead iodide-based Ruddlesden\u2013Popper perovskites","volume":"11","author":"Kahmann","year":"2020","journal-title":"Nat. Commun."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"2230","DOI":"10.1021\/acs.chemrev.0c01006","article-title":"The 2D halide perovskite rulebook: How the spacer influences everything from the structure to optoelectronic device efficiency","volume":"121","author":"Li","year":"2021","journal-title":"Chem. Rev."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"21763","DOI":"10.1021\/acsami.5b05279","article-title":"Two-dimensional perovskite activation with an organic luminophore","volume":"7","author":"Jemli","year":"2015","journal-title":"ACS Appl. Mater. Interfaces"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"7313","DOI":"10.1021\/jacs.8b03659","article-title":"Enhanced out-of-plane conductivity and photovoltaic performance in n = 1 layered perovskites through organic cation design","volume":"140","author":"Passarelli","year":"2018","journal-title":"J. Am. Chem. Soc."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"14078","DOI":"10.1002\/ange.201809028","article-title":"Thousand-fold Conductivity Increase in 2D Perovskites by Polydiacetylene Incorporation and Doping","volume":"130","year":"2018","journal-title":"Angew. Chem."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"20694","DOI":"10.1021\/jacs.3c02143","article-title":"Emerging two-dimensional organic semiconductor-incorporated perovskites\u2500 a fascinating family of hybrid electronic materials","volume":"145","author":"Sun","year":"2023","journal-title":"J. Am. Chem. Soc."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"5361","DOI":"10.1039\/c1cs15113d","article-title":"Aggregation-induced emission","volume":"40","author":"Hong","year":"2011","journal-title":"Chem. Soc. Rev."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"9888","DOI":"10.1002\/anie.201916729","article-title":"Aggregation-induced emission: New vistas at the aggregate level","volume":"59","author":"Zhao","year":"2020","journal-title":"Angew. Chem. Int. Ed."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"e91","DOI":"10.1002\/agt2.91","article-title":"Molecular mechanism of aggregation-induced emission","volume":"2","author":"Peng","year":"2021","journal-title":"Aggregate"},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"1909375","DOI":"10.1002\/adfm.201909375","article-title":"Interlayer-sensitized linear and nonlinear photoluminescence of quasi-2D hybrid perovskites using aggregation-induced enhanced emission active organic cation layers","volume":"30","author":"Lim","year":"2020","journal-title":"Adv. Funct. Mater."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"2746","DOI":"10.1002\/adfm.201302924","article-title":"Highly Fluorescent and Color-Tunable Exciplex Emission from Poly (N-vinylcarbazole) Film Containing Nanostructured Supramolecular Acceptors","volume":"24","author":"Kim","year":"2014","journal-title":"Adv. Funct. Mater."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"1118","DOI":"10.1002\/adma.201304427","article-title":"Synergistic effect of fluorination on molecular energy level modulation in highly efficient photovoltaic polymers","volume":"26","author":"Zhang","year":"2014","journal-title":"Adv. Mater."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"544","DOI":"10.1021\/ar2001952","article-title":"\u03c0-Conjugated cyanostilbene derivatives: A unique self-assembly motif for molecular nanostructures with enhanced emission and transport","volume":"45","author":"An","year":"2012","journal-title":"Acc. Chem. Res."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"1035","DOI":"10.1039\/D1RA08629D","article-title":"Free and self-trapped exciton emission in perovskite CsPbBr 3 microcrystals","volume":"12","author":"Pan","year":"2022","journal-title":"RSC Adv."}],"container-title":["International Journal of Molecular Sciences"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1422-0067\/26\/11\/5054\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T17:39:38Z","timestamp":1760031578000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1422-0067\/26\/11\/5054"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,5,24]]},"references-count":51,"journal-issue":{"issue":"11","published-online":{"date-parts":[[2025,6]]}},"alternative-id":["ijms26115054"],"URL":"https:\/\/doi.org\/10.3390\/ijms26115054","relation":{},"ISSN":["1422-0067"],"issn-type":[{"value":"1422-0067","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,5,24]]}}}