A Novel Polymethyl Methacrylate Derivative Grafted with Cationic Iridium(III) Complex Units: Synthesis and Application in White Light-Emitting Diodes
A Novel Polymethyl Methacrylate Derivative Grafted with Cationic Iridium(III) Complex Units: Synthesis and Application in White Light-Emitting Diodes
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新型阳离子铱(III)络合物单元接枝聚甲基丙烯酸甲酯衍生物：合成及其在白光发光二极管中的应用
DOI：
10.3390/polym11030499
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发表时间：
2019-03
期刊：
影响因子：
5
通讯作者：
Zhengliang Wang
中科院分区：
文献类型：
--
作者：
Huaijun Tang;Xueyan Dong;Mingxian Chen;Qiuhong Chen;mengran Ren;Kaimin Wan;Qiang Zhou;Zhengliang Wang
合成了一种新型的带有阳离子铱（III）配合物单元的橙黄发光聚甲基丙烯酸甲酯衍生物，并将其用作下转换发光材料。聚合物的热分解温度（Td）为275 °C。在20 ~ 100 °C范围内，随着温度的升高，其光致发光强度下降到76.8%，热猝灭激活能Ea为0.2775 eV。用460 nm蓝色GaN芯片和不同浓度的有机硅共混物制备了一系列LED。在4.0重量%时，获得冷白色LED，相关色温（CCT）为10，050 K，显色指数（CRI）为71.2，发光效率（ηL）为5.3 lm·w-1，并且国际照明委员会（CIE）色度坐标为（0.30，0.24）。在5.0重量%下，该LED发出中性白色光，CCT为4938 K，CRI为75，ηL为13.8 lm·w−1，CIE值为（0.34，0.27）。在5.5wt%、6.0wt%、7.0wt%和8.0wt%时，LED都发出暖白色光，它们的CCT分别为3446、3093、2557和2337 K，它们的CRI分别为73.6、71.8、63.8和59.0;它们的ηL分别为18.1、16.3、14.8和13.7 lm·w−1;它们的CIE值分别为（0.36，0.30）、（0.40，0.35）、（0.45，0.38）和（0.50，0.42）。在9.0wt%时，GaN芯片的蓝光被聚合物完全吸收，并且仅发射聚合物的橙黄光。结果表明，该聚合物是一种很有前途的橙黄发光荧光粉的候选人白色LED，特别是暖白色LED。
A novel orange-yellow-emitting polymethyl methacrylate derivative grafted with cationic iridium(III) complex units was synthesized and used as down-conversion luminescent materials in light-emitting diodes (LEDs). The polymer had a thermal decomposition temperature (Td) of 275 °C. With the temperature increasing from 20 to 100 °C, its photoluminescent intensity decreased to 76.8% with thermal quenching activation energy (Ea) of 0.2775 eV. A series of LEDs was fabricated by 460 nm blue GaN chips and the polymer blended in silicone at different concentrations. At 4.0 wt %, a cold white LED was obtained, the correlated color temperature (CCT) was 10,050 K, color rendering index (CRI) was 71.2, luminous efficiency (ηL) was 5.3 lm·w−1, and Commission Internationale de L’Eclairage (CIE) chromaticity coordinates were (0.30, 0.24). At 5.0 wt.%, the LED emitted neutral white light, its CCT was 4938 K, CRI was 75, ηL was 13.8 lm·w−1, and the CIE value was (0.34, 0.27). At 5.5 wt %, 6.0 wt %, 7.0 wt %, and 8.0 wt %, the LEDs all emitted warm white light; their CCTs were 3446, 3093, 2557, and 2337 K, respectively; their CRIs were 73.6, 71.8, 63.8, and 59.0, respectively; their ηL were 18.1, 16.3, 14.8, and 13.7 lm·w−1, respectively; and their CIE values were (0.36, 0.30), (0.40, 0.35), (0.45, 0.38), and (0.50, 0.42), respectively. At 9.0 wt %, the blue light of GaN chip was completely absorbed by the polymer and only the orange-yellow light of the polymer emitted. The results suggested the polymer was a promising orange-yellow-emitting phosphor candidate for white LEDs, especially for warm white LEDs.
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影响因子：
16.6
作者：
Sun, Chun-Yi;Wang, Xin-Long;Zhang, Xiao;Qin, Chao;Li, Peng;Su, Zhong-Min;Zhu, Dong-Xia;Shan, Guo-Gang;Shao, Kui-Zhan;Wu, Han;Li, Jing
通讯作者：
Li, Jing
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DOI：
10.1007/s10904-014-0099-8
发表时间：
2014-10
影响因子：
4
作者：
Liang Aihui;Ying Lei;Huang Fei
通讯作者：
Huang Fei
DOI：
10.1007/s10854-017-8065-1
发表时间：
2017
期刊：
Journal of Materials Science: Materials in Electronics
影响因子：
--
作者：
Yan-chun Ye;Riyong Sun;Mingxian Chen;Huaijun Tang;Xueyan Dong;Kaimin Wang;Zhengliang Wang
通讯作者：
Yan-chun Ye;Riyong Sun;Mingxian Chen;Huaijun Tang;Xueyan Dong;Kaimin Wang;Zhengliang Wang
影响因子：
29.4
作者：
Findlay, Neil J.;Bruckbauer, Jochen;Inigo, Anto R.;Breig, Benjamin;Arumugam, Sasikumar;Wallis, David J.;Martin, Robert W.;Skabara, Peter J.
通讯作者：
Skabara, Peter J.
影响因子：
35
作者：
Pimputkar, Siddha;Speck, James S.;Nakamura, Shuji
通讯作者：
Nakamura, Shuji