Tailoring Phospholes for Imprint of Fluorescent 3D Structures

Tailoring Phospholes for Imprint of Fluorescent 3D Structures
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定制磷光体用于荧光 3D 结构的压印

DOI:
10.1002/ejic.201900742
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发表时间:
2019
影响因子:
2.3
通讯作者:
R. Pietschnig
R. Pietschnig
中科院分区:
化学3区
文献类型:
--
作者:
F. Roesler;B. Kaban;D. Klintuch;U.-M. Ha;C. Bruhn;H. Hillmer;R. Pietschnig

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基于 PMMA 的聚合物共混物已注入发光磷光体,并通过纳米压印进行结构化。虽然对称取代的磷杂环己烷容易结晶和相分离,但人们已经探索了磷杂环骨架主链α-和β-位的结构修饰,这可以防止这些问题;建议对此进行结构性解释。 β-甲硅烷基取代的磷化物已获得最佳的相完整性,并在薄膜和珠子中实现。与发射带接近 500 nm 的纯化合物相比,磷光体的发射波长在聚合物基质中发生红移。这使得能够使用标准荧光显微镜追踪荧光珠。
PMMA based polymer blends have been infused with luminescent phospholes and have been structured via nanoimprint. While symmetrically substituted phospholes are prone to crystallization and phase separation, structural modification of the phosphole backbone in the α‐ and β‐positions has been explored, which prevents these issues; a structural explanation for this is suggested. Best phase integrity has been obtained for β‐silyl‐substituted phospholes, which were implemented in thin films and beads. The emission wavelengths of the phospholes are shifted bathochromically in the polymer matrix as compared to the neat compounds featuring emission bands near 500 nm. This enables tracking of the fluorescent beads using standard fluorescence microscopy.
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