The Experts below are selected from a list of 3501 Experts worldwide ranked by ideXlab platform
Yunhi Kim - One of the best experts on this subject based on the ideXlab platform.
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extremely deep blue and highly efficient non doped organic light emitting diodes using an asymmetric Anthracene Derivative with a xylene unit
Chemical Communications, 2013Co-Authors: Ran Kim, Soonki Kwon, Sunghun Lee, Kwonhyeon Kim, Yunji Lee, Jangjoo Kim, Yunhi KimAbstract:A new highly twisted asymmetric Anthracene Derivative with naphthalene and triphenylamine substituted xylene was synthesized as an extremely deep blue emitting material. A non-doped device using the new asymmetric blue emitter displays a maximum EQE of 4.62% with CIE color coordinates of (0.154, 0.049).
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high speed solution processed organic single crystal transistors using a novel triisopropylsilylethynyl Anthracene Derivative
Applied Physics Letters, 2012Co-Authors: Dae Sung Chung, Chan Eon Park, Huijun Yun, Soonki Kwon, Yunhi KimAbstract:A high-quality organic single crystal transistor (OSCT) was fabricated via solution-processing using a novel Anthracene Derivative (TIPsAntNE). The OSCT fabricated on a surface-modified high-capacitance ZrOx substrate provided a transistor that operated at low voltages with a high mobility up to 4.1 cm2/Vs and negligible hysteresis (a Vth shift of 1 A/W) of the TIPsAntNE single crystal was high over a wide range across the visible spectrum.
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synthesis and properties of blue light emitting Anthracene Derivative with diphenylamino fluorene
Dyes and Pigments, 2010Co-Authors: Jongwon Park, Yunhi Kim, Pengtao Kang, Hyuntae Park, Junghwan Yang, Soonki KwonAbstract:Abstract 9,10-Bis-(9′,9′-diethyl-7′-diphenylamino-fluoren-2-yl)-Anthracene was synthesized from 9.10-Anthracene diboronic acid and (7-bromo-9,9-diethyl-fluoren-2-yl)-diphenyl-amine in a Suzuki coupling reaction. A theoretical calculation of the three-dimensional structure suggests that it has a non-coplanar structure and inhibited intermolecular interactions. Upon excitation, the photoluminescence maximum of 9,10-bis-(9′,9′-diethyl-7′-diphenylamino-fluoren-2-yl)-Anthracene in solution and film were at 454 nm (solution) and 462 nm (film). The full width at half maximum of 9,10-bis-(9′,9′-diethyl-7′-diphenylamino-fluoren-2-yl)-Anthracene is 54 nm regardless of whether it is in a solution or a solid state. A multi-layered device using 9,10-bis-(9′,9′-diethyl-7′-diphenylamino-fluoren-2-yl)-Anthracene as emitting material exhibits maximum quantum efficiency of 3.3% (power efficiency of 2.1 lm/W, current efficiency of 4.17 cd/A) and a blue Commission Internationale de l'Eclairage chromaticity coordinates ( x = 0.14, y = 0.17).
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efficient and stable blue organic light emitting diode based on an Anthracene Derivative
Thin Solid Films, 2008Co-Authors: Jongwon Park, Yunhi Kim, Sangyun Jung, Kinam Byeon, Sanghoon Jang, Sangkyung Lee, Sung Cheol Shin, Soonki KwonAbstract:Abstract A blue light emitting material, 9,10-bis[3′,5′di-(4′-metoxyphenyl)-phenyl]-Anthracene (BDMA) was synthesized by a Suzuki coupling reaction and characterized by various spectroscopic methods. The Anthracene Derivative has a high fluorescence yield, good thermal stability with a high glass transition temperature (Tg) at 206 °C. A non-doped light emitting device using BDMA shows a maximum current efficiency of 2.2 cd/A, with a turn-on voltage of 4.4 V. The device emits blue light stably even at high voltages (5–18 V), with Commission Internationale de l'Eclairage color coordinates of (0.16, 0.12).
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efficient blue light emitting diode by using Anthracene Derivative with 3 5 diphenylphenyl wings at 9 and 10 position
Bulletin of The Korean Chemical Society, 2007Co-Authors: Yunhi Kim, Sangyun Jung, Kinam Byeon, Sung Joong Lee, Jeongsik Kim, Sung Chul Shin, Soonki KwonAbstract:The novel blue light emitting material, 9,10-bis(3',5'-diphenylphenyl)Anthracene (BDA) was synthesized by Suzuki coupling reaction and characterized by the measurements of 1 H NMR, 13 C NMR and FT-IR. The new Anthracene Derivative, which contains Anthracene as a main core unit and 3',5'-diphenylphenyl group Derivative as wings, has high fluorescence yield, good thermal stability, and high glass transition temperature at 188 °C. With the newly non-doped blue emitting material in the multilayer device structure, it was possible to achieve the current efficiency of 3.0 cd/A. The EL spectrum of the ITO/CuPc/α-NPD/BDA/Alq3/LiF/Al device showed a maximum wavelength (λ max ) at 440 nm. The emitting color of device showed the blue emission (x,y) = (0.18, 0.19) at 10 mA/cm 2 in CIE (Commission Internationale de l'Eclairage) chromaticity coordinates.
Lang Jiang - One of the best experts on this subject based on the ideXlab platform.
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thin film field effect transistors of 2 6 diphenyl Anthracene dpa
Chemical Communications, 2015Co-Authors: Jie Liu, Yonggang Zhen, Huanli Dong, Hantang Zhang, Lang Jiang, Z Wang, Changli Cheng, Hua Geng, Wei ChenAbstract:An Anthracene Derivative, 2,6-diphenyl Anthracene (DPA), was successfully synthesized with three simple steps and a high yield. The compound was determined to be a durable high performing semiconductor with thin film device mobility over 10 cm2 V−1 s−1. The efficient synthesis and high performance indicates its great potential in organic electronics.
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high performance organic single crystal transistors and digital inverters of an Anthracene Derivative
Advanced Materials, 2009Co-Authors: Lang Jiang, Zhongming Wei, Hong MengAbstract:[*] Prof. W. P. Hu, L. Jiang, Z. M. Wei, Prof. W. Xu Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100080 (P.R. China) E-mail: huwp@iccas.ac.cn Dr. H. Meng Central Research and Development Experimental Station E. I. DuPont Company Wilmington, DE 19880 (USA) E-mail: hong.meng@usa.dupont.com L. Jiang, and Z. Wei Graduate University of the Chinese Academy of Sciences Beijing 100039 (P.R. China)
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organic single crystalline ribbons of a rigid h type Anthracene Derivative and high performance short channel field effect transistors of individual micro nanometer sized ribbons fabricated by an organic ribbon mask technique
Advanced Materials, 2008Co-Authors: Lang Jiang, Jianhua Gao, Erjing Wang, Zhaohui Wang, Lei JiangAbstract:The synthesis of a rigid, planar H-type Anthracene Derivative is described. Single-crystalline ribbons at micro- and nanometer sizes can be controllably produced and transistors based on an individual ribbon can be fabricated in situ through a newly developed "organic ribbon mask" method, in which the channel length of the transistors can be easily scaled down to sub-micrometer level.
Huanli Dong - One of the best experts on this subject based on the ideXlab platform.
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thin film field effect transistors of 2 6 diphenyl Anthracene dpa
Chemical Communications, 2015Co-Authors: Jie Liu, Yonggang Zhen, Huanli Dong, Hantang Zhang, Lang Jiang, Z Wang, Changli Cheng, Hua Geng, Wei ChenAbstract:An Anthracene Derivative, 2,6-diphenyl Anthracene (DPA), was successfully synthesized with three simple steps and a high yield. The compound was determined to be a durable high performing semiconductor with thin film device mobility over 10 cm2 V−1 s−1. The efficient synthesis and high performance indicates its great potential in organic electronics.
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Naphthyl substituted Anthracene combining charge transport with light emission
Journal of Materials Chemistry C, 2015Co-Authors: Jie Liu, Yonggang Zhen, Lingqiang Meng, Ying Wang, Huanli DongAbstract:By simply introducing the naphthyl group into the 2-position of Anthracene, we synthesized a new Anthracene Derivative, NaAnt, which showed good charge transporting properties up to 1.10 cm2 V−1 s−1 and a photoluminescence quantum yield (PLQY) of 40.30%. The results indicate its potential applications in multifunctional optoelectronics.
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The position effect of an ethynyl spacer on the carrier mobility of Anthracene Derivatives
Journal of Materials Chemistry C, 2015Co-Authors: Xiaotao Zhang, Yonggang Zhen, Guangyao Zhao, Huanli DongAbstract:Two oxidation-stable naphthalenyl ethynyl Anthracene Derivatives have been synthesized via Sonogashira coupling. In contrast to a 1-position substituted Anthracene Derivative with near zero mobility, the functionalization at the 2-position of Anthracene gives rise to a densely packed structure and a uniform film with mobility up to 1.6 cm2 V−1 s−1, which is one of the highest values for thin film transistors based on Anthracene Derivatives.
Soonki Kwon - One of the best experts on this subject based on the ideXlab platform.
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extremely deep blue and highly efficient non doped organic light emitting diodes using an asymmetric Anthracene Derivative with a xylene unit
Chemical Communications, 2013Co-Authors: Ran Kim, Soonki Kwon, Sunghun Lee, Kwonhyeon Kim, Yunji Lee, Jangjoo Kim, Yunhi KimAbstract:A new highly twisted asymmetric Anthracene Derivative with naphthalene and triphenylamine substituted xylene was synthesized as an extremely deep blue emitting material. A non-doped device using the new asymmetric blue emitter displays a maximum EQE of 4.62% with CIE color coordinates of (0.154, 0.049).
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high speed solution processed organic single crystal transistors using a novel triisopropylsilylethynyl Anthracene Derivative
Applied Physics Letters, 2012Co-Authors: Dae Sung Chung, Chan Eon Park, Huijun Yun, Soonki Kwon, Yunhi KimAbstract:A high-quality organic single crystal transistor (OSCT) was fabricated via solution-processing using a novel Anthracene Derivative (TIPsAntNE). The OSCT fabricated on a surface-modified high-capacitance ZrOx substrate provided a transistor that operated at low voltages with a high mobility up to 4.1 cm2/Vs and negligible hysteresis (a Vth shift of 1 A/W) of the TIPsAntNE single crystal was high over a wide range across the visible spectrum.
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synthesis and properties of blue light emitting Anthracene Derivative with diphenylamino fluorene
Dyes and Pigments, 2010Co-Authors: Jongwon Park, Yunhi Kim, Pengtao Kang, Hyuntae Park, Junghwan Yang, Soonki KwonAbstract:Abstract 9,10-Bis-(9′,9′-diethyl-7′-diphenylamino-fluoren-2-yl)-Anthracene was synthesized from 9.10-Anthracene diboronic acid and (7-bromo-9,9-diethyl-fluoren-2-yl)-diphenyl-amine in a Suzuki coupling reaction. A theoretical calculation of the three-dimensional structure suggests that it has a non-coplanar structure and inhibited intermolecular interactions. Upon excitation, the photoluminescence maximum of 9,10-bis-(9′,9′-diethyl-7′-diphenylamino-fluoren-2-yl)-Anthracene in solution and film were at 454 nm (solution) and 462 nm (film). The full width at half maximum of 9,10-bis-(9′,9′-diethyl-7′-diphenylamino-fluoren-2-yl)-Anthracene is 54 nm regardless of whether it is in a solution or a solid state. A multi-layered device using 9,10-bis-(9′,9′-diethyl-7′-diphenylamino-fluoren-2-yl)-Anthracene as emitting material exhibits maximum quantum efficiency of 3.3% (power efficiency of 2.1 lm/W, current efficiency of 4.17 cd/A) and a blue Commission Internationale de l'Eclairage chromaticity coordinates ( x = 0.14, y = 0.17).
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efficient and stable blue organic light emitting diode based on an Anthracene Derivative
Thin Solid Films, 2008Co-Authors: Jongwon Park, Yunhi Kim, Sangyun Jung, Kinam Byeon, Sanghoon Jang, Sangkyung Lee, Sung Cheol Shin, Soonki KwonAbstract:Abstract A blue light emitting material, 9,10-bis[3′,5′di-(4′-metoxyphenyl)-phenyl]-Anthracene (BDMA) was synthesized by a Suzuki coupling reaction and characterized by various spectroscopic methods. The Anthracene Derivative has a high fluorescence yield, good thermal stability with a high glass transition temperature (Tg) at 206 °C. A non-doped light emitting device using BDMA shows a maximum current efficiency of 2.2 cd/A, with a turn-on voltage of 4.4 V. The device emits blue light stably even at high voltages (5–18 V), with Commission Internationale de l'Eclairage color coordinates of (0.16, 0.12).
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efficient blue light emitting diode by using Anthracene Derivative with 3 5 diphenylphenyl wings at 9 and 10 position
Bulletin of The Korean Chemical Society, 2007Co-Authors: Yunhi Kim, Sangyun Jung, Kinam Byeon, Sung Joong Lee, Jeongsik Kim, Sung Chul Shin, Soonki KwonAbstract:The novel blue light emitting material, 9,10-bis(3',5'-diphenylphenyl)Anthracene (BDA) was synthesized by Suzuki coupling reaction and characterized by the measurements of 1 H NMR, 13 C NMR and FT-IR. The new Anthracene Derivative, which contains Anthracene as a main core unit and 3',5'-diphenylphenyl group Derivative as wings, has high fluorescence yield, good thermal stability, and high glass transition temperature at 188 °C. With the newly non-doped blue emitting material in the multilayer device structure, it was possible to achieve the current efficiency of 3.0 cd/A. The EL spectrum of the ITO/CuPc/α-NPD/BDA/Alq3/LiF/Al device showed a maximum wavelength (λ max ) at 440 nm. The emitting color of device showed the blue emission (x,y) = (0.18, 0.19) at 10 mA/cm 2 in CIE (Commission Internationale de l'Eclairage) chromaticity coordinates.
Xiaotao Zhang - One of the best experts on this subject based on the ideXlab platform.
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The effect of electron-withdrawing substituents in asymmetric Anthracene Derivative semiconductors
Journal of Materials Chemistry C, 2021Co-Authors: Si Liu, Lei Zheng, Mingxi Chen, Yajing Sun, Peng Wang, Xiaotao ZhangAbstract:Three Anthracene Derivatives were synthesized to reveal the effect of the electron-withdrawing substituents on structure and photoelectric properties, providing a possible strategy for controlling n-type Anthracene Derivative semiconductor.
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A new asymmetric Anthracene Derivative with high mobility
Science China Chemistry, 2019Co-Authors: Lei Zheng, Lu Wang, Han Jiangli, Huayi Chen, Xiaotao ZhangAbstract:An asymmetric Anthracene Derivative (4-HDPA) was designed and synthesized. With the optimization of proper scenario of fabrication process, top-contact thin film devices based on 4-HDPA exhibit mobility as high as 3.59 cm2 V–1 s–1, while its single-crystal devices exhibit mobility as high as 5.12 cm2 V–1 s–1, which is higher than the symmetrical counterpart of 4-HDPA in both single-crystal and thin film devices.
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A cross-dipole stacking molecule of an Anthracene Derivative: integrating optical and electrical properties
Journal of Materials Chemistry C, 2015Co-Authors: Jie Liu, Lingqiang Meng, Xiaotao Zhang, Weigang Zhu, Congcong Zhang, Hantang Zhang, Yifan Yao, Zongrui Wang, Ying WangAbstract:Cross-dipole stacking has been addressed as a preferred motif for solid state emission, but inefficient for charge transport. Here we synthesize a new Anthracene Derivative, which adopts cross-stacking in the solid state with a solid state fluorescence up to 77.3% and a hole mobility of 1.47 cm2 V−1 s−1, integrating optical and electrical properties successfully. As far as we know, it is the first report of organic field-effect transistors based on cross-dipole stacking molecules.
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The position effect of an ethynyl spacer on the carrier mobility of Anthracene Derivatives
Journal of Materials Chemistry C, 2015Co-Authors: Xiaotao Zhang, Yonggang Zhen, Guangyao Zhao, Huanli DongAbstract:Two oxidation-stable naphthalenyl ethynyl Anthracene Derivatives have been synthesized via Sonogashira coupling. In contrast to a 1-position substituted Anthracene Derivative with near zero mobility, the functionalization at the 2-position of Anthracene gives rise to a densely packed structure and a uniform film with mobility up to 1.6 cm2 V−1 s−1, which is one of the highest values for thin film transistors based on Anthracene Derivatives.