Sequentially amplified circularly polarized ultraviolet luminescence for enantioselective photopolymerization.
Sequentially amplified circularly polarized ultraviolet luminescence for enantioselective photopolymerization.
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用于对映选择性光聚合的连续放大圆偏振紫外发光
DOI：
10.1038/s41467-020-19479-1
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发表时间：
2020-11-09
影响因子：
16.6
通讯作者：
Duan P
中科院分区：
文献类型：
--
作者：
Han D;Yang X;Han J;Zhou J;Jiao T;Duan P
基于圆偏振发光（CPL）的手性光学材料由于其在各个领域的可行应用而迅速发展。但限于发光不对称因子（glum）很小，真实的应用实例还很少报道。在这里，我们提出了一个复杂的系统，它显示出强烈的圆偏振紫外发光（CPUVL）与largeglumvalue，使手性紫外光引发的不对称选择性聚合。将敏化三重态-三重态湮灭上转换与CPL相结合，在手性零化剂R（S）-4，12-联苯[2，2]对环芳烷（R-/S-TP）与热激活延迟荧光（TADF）敏化剂构建的体系中，获得了可见-紫外上转换发光和上转换圆偏振紫外发光（UC-CPUVL）。将该上转换体系分散到室温下的手性诱导液晶中，诱导手性诱导液晶能显著提高UC-CPUVL的荧光强度（0.19）。此外，UC-CPUVL发射已被用于引发二乙炔的对映选择性光聚合。本工作为CPL活性材料的功能化应用的进一步开发奠定了基础。
Chiral optical materials based on circularly polarized luminescence (CPL) have emerged rapidly due to their feasible applications in diverse fields of research. However, limited to the small luminescence dissymmetry factor (glum), real application examples have rarely been reported. Here, we present a complex system, which show intense circularly polarized ultraviolet luminescence (CPUVL) with largeglumvalue, enabling a chiral UV light triggered enantioselective polymerization. By integrating sensitized triplet-triplet annihilation upconversion and CPL, both visible-to-UV upconversion emission and upconverted circularly polarized ultraviolet luminescence (UC-CPUVL) were obtained in the systems, built of chiral annihilatorR(S)-4,12-biphenyl[2,2]paracyclophane (R-/S-TP), and a thermally activated delayed fluorescence (TADF) sensitizer. After dispersing this upconversion system into room-temperature nematic liquid crystal, induced chiral nematic liquid crystal could significantly amplify theglumvalue (0.19) of UC-CPUVL. Further, the UC-CPUVL emission has been used to trigger the enantioselective photopolymerization of diacetylene. This work paves the way for the further development of functional application of CPL active materials.
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影响因子：
15
作者：
Kawasaki, T;Sato, M;Soai, K
通讯作者：
Soai, K
DOI：
10.1002/anie.201606895
发表时间：
2016-10-10
期刊：
Angewandte Chemie (International ed. in English)
影响因子：
--
作者：
Gutierrez-Cuevas KG;Wang L;Zheng ZG;Bisoyi HK;Li G;Tan LS;Vaia RA;Li Q
通讯作者：
Li Q
影响因子：
2.9
作者：
Deng, Fan;Blumhoff, Joerg;Castellano, Felix N.
通讯作者：
Castellano, Felix N.
手性纳米粒子增强的高度对映选择性光聚合和手性原位光图案化
影响因子：
16.6
作者：
He, Chenlu;Feng, Zeyu;Zou, Gang
通讯作者：
Zou, Gang
影响因子：
32.5
作者：
Cheng, Yuen Yap;Fueckel, Burkhard;Schmidt, Timothy W.
通讯作者：
Schmidt, Timothy W.