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Ultrabright Fluorescent and Lasing Microspheres from a Conjugated Polymer
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2018-06-21 , DOI: 10.1002/adfm.201802759 Kirsty Gardner 1 , Maryam Aghajamali 2 , Sergey Vagin 3 , Jennifer Pille 1 , William Morrish 1 , Jonathan G. C. Veinot 2 , Bernhard Rieger 3 , Alkiviathes Meldrum 1
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2018-06-21 , DOI: 10.1002/adfm.201802759 Kirsty Gardner 1 , Maryam Aghajamali 2 , Sergey Vagin 3 , Jennifer Pille 1 , William Morrish 1 , Jonathan G. C. Veinot 2 , Bernhard Rieger 3 , Alkiviathes Meldrum 1
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Fluorescent microspheres are used for biomarkers, assay substrates, chemical diagnostics, flow cytometry, and biological imaging. These applications demand the highest fluorescence intensity achievable; however, concentration quenching limits the amount of dye that can be practically incorporated in conventional fluorescent microspheres. Conjugated polymers (CPs) can be less susceptible to concentration quenching, suggesting that they can be excellent candidates for a new class of light‐emitting microspheres. Due to their long‐chain‐conjugated backbone, however, CPs can be resistant to forming smoothly curved or spherical structures. Here, strongly fluorescent CP microspheres as large as 100 µm in diameter are synthesized. Whispering gallery modes (WGMs) appear in the fluorescence spectra, and the microspheres show clear evidence of lasing above a threshold pump intensity. These conjugated polymer beads are up to 50 times larger than CP microspheres obtained by other methods, and they exceed the emission intensity of conventional fluorescent microspheres by more than an order of magnitude.
中文翻译：
共轭聚合物的超亮荧光和激光微球
荧光微球用于生物标记，测定底物，化学诊断，流式细胞仪和生物成像。这些应用要求可达到的最高荧光强度。然而，浓度猝灭限制了可实际掺入常规荧光微球中的染料量。共轭聚合物（CPs）不太容易发生浓度猝灭，这表明它们可以成为新型发光微球的极佳候选者。然而，由于长链共轭主链，CP可以抵抗形成平滑的弯曲或球形结构。在这里，合成了直径最大为100 µm的强荧光CP微球。萤光光谱中出现了回音壁模式（WGM），并且微球显示出明显的证据，表明泵浦强度超过阈值时会发生激射。这些共轭聚合物珠粒是通过其他方法获得的CP微球粒的最大50倍，并且它们比常规荧光微球粒的发射强度高出一个数量级以上。
更新日期：2018-06-21
中文翻译：
共轭聚合物的超亮荧光和激光微球
荧光微球用于生物标记，测定底物，化学诊断，流式细胞仪和生物成像。这些应用要求可达到的最高荧光强度。然而，浓度猝灭限制了可实际掺入常规荧光微球中的染料量。共轭聚合物（CPs）不太容易发生浓度猝灭，这表明它们可以成为新型发光微球的极佳候选者。然而，由于长链共轭主链，CP可以抵抗形成平滑的弯曲或球形结构。在这里，合成了直径最大为100 µm的强荧光CP微球。萤光光谱中出现了回音壁模式（WGM），并且微球显示出明显的证据，表明泵浦强度超过阈值时会发生激射。这些共轭聚合物珠粒是通过其他方法获得的CP微球粒的最大50倍，并且它们比常规荧光微球粒的发射强度高出一个数量级以上。
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