Ge Yang, Junjie Liu, Yudong Yang, Zhengyang Bin, Jingsong You
{"title":"揭示窄带荧光发射器设计中的中心对称效应:从单到双双氟硼核","authors":"Ge Yang, Junjie Liu, Yudong Yang, Zhengyang Bin, Jingsong You","doi":"10.1021/jacs.4c15233","DOIUrl":null,"url":null,"abstract":"Narrowband fluorescent emitters are receiving significant attention due to the great potential for creating ultrahigh-definition organic light-emitting diode displays (UHD-OLED). Unveiling innovative mechanisms to design new high-performance narrowband fluorescent emitters is a concerted endeavor in both academic and industrial circles. Theoretical calculations reveal that the centrosymmetric dianilido-bipyridine boron difluoride framework (<i>cs</i>-DAPBF<sub>2</sub>) exhibits significantly reduced structural relaxation compared to previously reported asymmetric structures with monofluoroboron cores, creating new opportunities for the development of narrowband fluorescent emitters. In this work, we present a dual chelation-assisted C–H/C–H homocoupling strategy to efficiently synthesize the 3,3′-amino-2,2′-bipyridine skeleton, enabling the straightforward construction of a series of symmetric <i>cs</i>-DAPBF<sub>2</sub>-based fluorescent emitters. Through molecular optimization, we have developed a high-performance narrowband green fluorescent emitter, <i>cs</i>-DMeAPBF<sub>2</sub>-MP, which demonstrates a narrow full width at half-maximum (fwhm) of 20 nm, a high photoluminescence quantum yield (Φ<sub>PL</sub>) of 98%, a large molar absorptivity (ε) of 2.10 × 10<sup>4</sup> M<sup>–1</sup> cm<sup>–1</sup>, and a high horizontal dipole ratio (Θ<sub>//</sub>) of 77%. These properties make <i>cs</i>-DMeAPBF<sub>2</sub>-MP a promising candidate for fabricating high-efficiency, narrowband green organic light-emitting diodes (OLEDs) with minimal efficiency roll-off. This study represents the first successful application of the DAPBF<sub>2</sub> architecture in the design of narrowband fluorescent emitters for high-performance OLEDs.","PeriodicalId":49,"journal":{"name":"Journal of the American Chemical Society","volume":"31 1","pages":""},"PeriodicalIF":14.4000,"publicationDate":"2024-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Unveiling the Centrosymmetric Effect in the Design of Narrowband Fluorescent Emitters: From Single to Double Difluoroboron Cores\",\"authors\":\"Ge Yang, Junjie Liu, Yudong Yang, Zhengyang Bin, Jingsong You\",\"doi\":\"10.1021/jacs.4c15233\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Narrowband fluorescent emitters are receiving significant attention due to the great potential for creating ultrahigh-definition organic light-emitting diode displays (UHD-OLED). Unveiling innovative mechanisms to design new high-performance narrowband fluorescent emitters is a concerted endeavor in both academic and industrial circles. Theoretical calculations reveal that the centrosymmetric dianilido-bipyridine boron difluoride framework (<i>cs</i>-DAPBF<sub>2</sub>) exhibits significantly reduced structural relaxation compared to previously reported asymmetric structures with monofluoroboron cores, creating new opportunities for the development of narrowband fluorescent emitters. In this work, we present a dual chelation-assisted C–H/C–H homocoupling strategy to efficiently synthesize the 3,3′-amino-2,2′-bipyridine skeleton, enabling the straightforward construction of a series of symmetric <i>cs</i>-DAPBF<sub>2</sub>-based fluorescent emitters. Through molecular optimization, we have developed a high-performance narrowband green fluorescent emitter, <i>cs</i>-DMeAPBF<sub>2</sub>-MP, which demonstrates a narrow full width at half-maximum (fwhm) of 20 nm, a high photoluminescence quantum yield (Φ<sub>PL</sub>) of 98%, a large molar absorptivity (ε) of 2.10 × 10<sup>4</sup> M<sup>–1</sup> cm<sup>–1</sup>, and a high horizontal dipole ratio (Θ<sub>//</sub>) of 77%. These properties make <i>cs</i>-DMeAPBF<sub>2</sub>-MP a promising candidate for fabricating high-efficiency, narrowband green organic light-emitting diodes (OLEDs) with minimal efficiency roll-off. This study represents the first successful application of the DAPBF<sub>2</sub> architecture in the design of narrowband fluorescent emitters for high-performance OLEDs.\",\"PeriodicalId\":49,\"journal\":{\"name\":\"Journal of the American Chemical Society\",\"volume\":\"31 1\",\"pages\":\"\"},\"PeriodicalIF\":14.4000,\"publicationDate\":\"2024-12-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of the American Chemical Society\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1021/jacs.4c15233\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the American Chemical Society","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1021/jacs.4c15233","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Unveiling the Centrosymmetric Effect in the Design of Narrowband Fluorescent Emitters: From Single to Double Difluoroboron Cores
Narrowband fluorescent emitters are receiving significant attention due to the great potential for creating ultrahigh-definition organic light-emitting diode displays (UHD-OLED). Unveiling innovative mechanisms to design new high-performance narrowband fluorescent emitters is a concerted endeavor in both academic and industrial circles. Theoretical calculations reveal that the centrosymmetric dianilido-bipyridine boron difluoride framework (cs-DAPBF2) exhibits significantly reduced structural relaxation compared to previously reported asymmetric structures with monofluoroboron cores, creating new opportunities for the development of narrowband fluorescent emitters. In this work, we present a dual chelation-assisted C–H/C–H homocoupling strategy to efficiently synthesize the 3,3′-amino-2,2′-bipyridine skeleton, enabling the straightforward construction of a series of symmetric cs-DAPBF2-based fluorescent emitters. Through molecular optimization, we have developed a high-performance narrowband green fluorescent emitter, cs-DMeAPBF2-MP, which demonstrates a narrow full width at half-maximum (fwhm) of 20 nm, a high photoluminescence quantum yield (ΦPL) of 98%, a large molar absorptivity (ε) of 2.10 × 104 M–1 cm–1, and a high horizontal dipole ratio (Θ//) of 77%. These properties make cs-DMeAPBF2-MP a promising candidate for fabricating high-efficiency, narrowband green organic light-emitting diodes (OLEDs) with minimal efficiency roll-off. This study represents the first successful application of the DAPBF2 architecture in the design of narrowband fluorescent emitters for high-performance OLEDs.
期刊介绍:
The flagship journal of the American Chemical Society, known as the Journal of the American Chemical Society (JACS), has been a prestigious publication since its establishment in 1879. It holds a preeminent position in the field of chemistry and related interdisciplinary sciences. JACS is committed to disseminating cutting-edge research papers, covering a wide range of topics, and encompasses approximately 19,000 pages of Articles, Communications, and Perspectives annually. With a weekly publication frequency, JACS plays a vital role in advancing the field of chemistry by providing essential research.