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Reducing aggregation caused quenching effect through co-assembly of PAH chromophores and molecular barriers.
Nature Communications ( IF 14.7 ) Pub Date : 2019-01-11 , DOI: 10.1038/s41467-018-08092-y Yinjuan Huang 1 , Jie Xing 2 , Qiuyu Gong 3 , Li-Chuan Chen 4 , Guangfeng Liu 1 , Changjiang Yao 1 , Zongrui Wang 1 , Hao-Li Zhang 4 , Zhong Chen 1 , Qichun Zhang 1
Nature Communications ( IF 14.7 ) Pub Date : 2019-01-11 , DOI: 10.1038/s41467-018-08092-y Yinjuan Huang 1 , Jie Xing 2 , Qiuyu Gong 3 , Li-Chuan Chen 4 , Guangfeng Liu 1 , Changjiang Yao 1 , Zongrui Wang 1 , Hao-Li Zhang 4 , Zhong Chen 1 , Qichun Zhang 1
Affiliation
The features of well-conjugated and planar aromatic structures make π-conjugated luminescent materials suffer from aggregation caused quenching (ACQ) effect when used in solid or aggregated states, which greatly impedes their applications in optoelectronic devices and biological applications. Herein, we reduce the ACQ effect by demonstrating a facile and low cost method to co-assemble polycyclic aromatic hydrocarbon (PAH) chromophores and octafluoronaphthalene together. Significantly, the solid photoluminescence quantum yield (PLQYs) for the as-resulted four micro/nanococrystals are enhanced by 254%, 235%, 474 and 582%, respectively. Protection from hydrophilic polymer chains (P123 (PEO20-PPO70-PEO20)) endows the cocrystals with superb dispersibility in water. More importantly, profiting from the above-mentioned highly improved properties, nano-cocrystals present good biocompatibility and considerable cell imaging performance. This research provides a simple method to enhance the emission, biocompatibility and cellular permeability of common chromophores, which may open more avenues for the applications of originally non- or poor fluorescent PAHs.
中文翻译:
减少聚集通过PAH发色团和分子屏障的共同组装而引起猝灭作用。
高共轭和平面芳族结构的特征使π共轭发光材料以固态或聚集态使用时会遭受聚集引起的猝灭(ACQ)效应,这极大地阻碍了它们在光电器件和生物应用中的应用。在这里,我们通过演示一种简便而低成本的方法来降低ACQ效应,该方法可以将多环芳烃(PAH)生色团和八氟萘共组装在一起。显着地,如此得到的四个微/纳米共晶体的固体光致发光量子产率(PLQYs)分别提高了254%,235%,474和582%。免受亲水性聚合物链(P123(PEO20-PPO70-PEO20))的保护,使共晶体在水中具有出色的分散性。更重要的是,得益于上述高度改进的特性,纳米共晶体具有良好的生物相容性和可观的细胞成像性能。这项研究提供了一种简单的方法来增强普通发色团的发射,生物相容性和细胞渗透性,这可能为最初使用非荧光或不良荧光PAH的应用开辟更多途径。
更新日期:2019-01-11
中文翻译:
减少聚集通过PAH发色团和分子屏障的共同组装而引起猝灭作用。
高共轭和平面芳族结构的特征使π共轭发光材料以固态或聚集态使用时会遭受聚集引起的猝灭(ACQ)效应,这极大地阻碍了它们在光电器件和生物应用中的应用。在这里,我们通过演示一种简便而低成本的方法来降低ACQ效应,该方法可以将多环芳烃(PAH)生色团和八氟萘共组装在一起。显着地,如此得到的四个微/纳米共晶体的固体光致发光量子产率(PLQYs)分别提高了254%,235%,474和582%。免受亲水性聚合物链(P123(PEO20-PPO70-PEO20))的保护,使共晶体在水中具有出色的分散性。更重要的是,得益于上述高度改进的特性,纳米共晶体具有良好的生物相容性和可观的细胞成像性能。这项研究提供了一种简单的方法来增强普通发色团的发射,生物相容性和细胞渗透性,这可能为最初使用非荧光或不良荧光PAH的应用开辟更多途径。