{"title":"Dual State Emissive AIE Active Carbon Dots with Matrix-Free Room Temperature Phosphorescence.","authors":"Satendra Kumar, Pradip Pattanayak, Bishes Ray, Pradipta Purkayastha","doi":"10.1002/asia.202401216","DOIUrl":null,"url":null,"abstract":"<p><p>Long-lived triplet excitons are kingmakers to generate high efficiency optoelectronic OLEDs. However, it is difficult to produce matrix-free solid state emissive room temperature phosphorescence (RTP) from carbon dots (CDs). In the present work, limited rotation of the two naphthol rings in (R)-1,1-Bi-2-naphthol (R-Binol) has been used to synthesize CDs aimed to obtain emission in the aggregated and RTP states. The R-Binol-derived CDs were prepared using an easy one-pot solvothermal treatment of the precursor. In-depth structural analysis reveals the presence of twisted naphthalene moiety that resists π-π stacking to make it dual emissive. These CDs are prone to accumulate producing spherical aggregates with 32-fold enhanced emission in binary THF-water mixture. Nevertheless, for the first time, we harvested triplet excitons from matrix free CDs generating 23% PLQY. A phosphor converted light emitting diode (pc-LED) was also fabricated with the CDs.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401216"},"PeriodicalIF":3.5000,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemistry - An Asian Journal","FirstCategoryId":"1","ListUrlMain":"https://doi.org/10.1002/asia.202401216","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Long-lived triplet excitons are kingmakers to generate high efficiency optoelectronic OLEDs. However, it is difficult to produce matrix-free solid state emissive room temperature phosphorescence (RTP) from carbon dots (CDs). In the present work, limited rotation of the two naphthol rings in (R)-1,1-Bi-2-naphthol (R-Binol) has been used to synthesize CDs aimed to obtain emission in the aggregated and RTP states. The R-Binol-derived CDs were prepared using an easy one-pot solvothermal treatment of the precursor. In-depth structural analysis reveals the presence of twisted naphthalene moiety that resists π-π stacking to make it dual emissive. These CDs are prone to accumulate producing spherical aggregates with 32-fold enhanced emission in binary THF-water mixture. Nevertheless, for the first time, we harvested triplet excitons from matrix free CDs generating 23% PLQY. A phosphor converted light emitting diode (pc-LED) was also fabricated with the CDs.
期刊介绍：
Chemistry—An Asian Journal is an international high-impact journal for chemistry in its broadest sense. The journal covers all aspects of chemistry from biochemistry through organic and inorganic chemistry to physical chemistry, including interdisciplinary topics.
Chemistry—An Asian Journal publishes Full Papers, Communications, and Focus Reviews.
A professional editorial team headed by Dr. Theresa Kueckmann and an Editorial Board (headed by Professor Susumu Kitagawa) ensure the highest quality of the peer-review process, the contents and the production of the journal.
Chemistry—An Asian Journal is published on behalf of the Asian Chemical Editorial Society (ACES), an association of numerous Asian chemical societies, and supported by the Gesellschaft Deutscher Chemiker (GDCh, German Chemical Society), ChemPubSoc Europe, and the Federation of Asian Chemical Societies (FACS).
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