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Realizing High Quantum Yield Blue Emission of Polycarbosilane Modified by Anthracene with Weak Intermolecular Interactions
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2020-02-04 , DOI: 10.1021/acs.jpcc.9b10790 Rongqian Yao 1 , Lei Zhong 1 , Yuchen Han 1 , Chao Jin 1 , Jiamin Lu 1 , Fen Chen 1 , Liang Liao 1 , Zeng Chen 1 , Yinggan Zhang 1 , Guolong Chen 2 , Yuejin Zhong 1 , Yinong Zheng 1 , Wenyan Huang 1 , Siqi Lan 1 , Zude Feng 1 , Xulin Chen 3 , Canzhong Lu 3
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2020-02-04 , DOI: 10.1021/acs.jpcc.9b10790 Rongqian Yao 1 , Lei Zhong 1 , Yuchen Han 1 , Chao Jin 1 , Jiamin Lu 1 , Fen Chen 1 , Liang Liao 1 , Zeng Chen 1 , Yinggan Zhang 1 , Guolong Chen 2 , Yuejin Zhong 1 , Yinong Zheng 1 , Wenyan Huang 1 , Siqi Lan 1 , Zude Feng 1 , Xulin Chen 3 , Canzhong Lu 3
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Integration of high quantum yield blue emission and easy film-forming ability in organic emissive materials is challenging. Polycarbosilane (PCS) has received much attention as a model compound owing to its high stability, versatile optical properties, solvability, and film-forming ability; also, anthracene as a star material is the first organic molecule for electroluminescence (EL) devices. Herein, an ingenious strategy was successfully introduced to prepare PCSx with 9-ethylanthracene (referred as 9-EA-PCSx) by a hydrosilylation reaction using 9-vinylanthracene and PCS as starting materials, which transfer efficient energy from −Si–C– bonds to anthracene units. Grafted 9-ethylanthracene with extended π-conjugation effectively improves optical property, morphological stability, and oxidation and ultraviolet (UV) radiation resistance of PCS. Particularly, 9-EA-PCSh powder displays excellent blue light emission (λmax = 433 nm) with a high quantum yield (up to 80.06%), which is the highest value ever reported for organosilicon polymers to the best of our knowledge. For the first time, such a synergistic effect of PCS with anthracene in this way paves a practical way toward reliable emissive materials capable of forming facile coatings and providing useful low-cost emitting layers in developing foldable organic devices.
中文翻译：
弱分子间相互作用实现蒽修饰的聚碳硅烷的高量子产率蓝发射
在有机发光材料中集成高量子产率的蓝色发射和易于成膜的能力具有挑战性。聚碳硅烷（PCS）因其高稳定性，通用的光学性能，溶解性和成膜能力而作为模型化合物备受关注。同样，蒽作为星形材料是用于电致发光（EL）器件的第一个有机分子。在本文中，成功引入了一种巧妙的策略，可以将PCS x与9-乙基蒽（称为9-EA-PCS x）是通过使用9-乙烯基蒽和PCS作为原料进行的氢化硅烷化反应将有效能量从-Si-C-键转移至蒽单元。接枝的9-乙基蒽具有扩展的π共轭，可有效改善PCS的光学性能，形态稳定性以及抗氧化性和抗紫外线性。特别是9-EA-PCS h粉末具有出色的蓝光发射（λmax= 433 nm）具有高的量子产率（高达80.06％），据我们所知，这是有史以来有机硅聚合物报道的最高值。第一次，PCS与蒽的这种协同作用以这种方式为实用的方法铺平了可靠的发光材料，该材料能够形成易涂层，并在开发可折叠有机设备时提供有用的低成本发光层。
更新日期：2020-02-04
中文翻译：
弱分子间相互作用实现蒽修饰的聚碳硅烷的高量子产率蓝发射
在有机发光材料中集成高量子产率的蓝色发射和易于成膜的能力具有挑战性。聚碳硅烷（PCS）因其高稳定性，通用的光学性能，溶解性和成膜能力而作为模型化合物备受关注。同样，蒽作为星形材料是用于电致发光（EL）器件的第一个有机分子。在本文中，成功引入了一种巧妙的策略，可以将PCS x与9-乙基蒽（称为9-EA-PCS x）是通过使用9-乙烯基蒽和PCS作为原料进行的氢化硅烷化反应将有效能量从-Si-C-键转移至蒽单元。接枝的9-乙基蒽具有扩展的π共轭，可有效改善PCS的光学性能，形态稳定性以及抗氧化性和抗紫外线性。特别是9-EA-PCS h粉末具有出色的蓝光发射（λmax= 433 nm）具有高的量子产率（高达80.06％），据我们所知，这是有史以来有机硅聚合物报道的最高值。第一次，PCS与蒽的这种协同作用以这种方式为实用的方法铺平了可靠的发光材料，该材料能够形成易涂层，并在开发可折叠有机设备时提供有用的低成本发光层。
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