https://scholars.lib.ntu.edu.tw/handle/123456789/631231
標題: | Chiral Binaphthalene Building Blocks for Self-Assembled Nanoscale CPL Emitters | 作者: | Hsieh, Yu-Yu Shyue, Jing-Jong Chao, Yu-Chiang KEN-TSUNG WONG Bassani, Dario M |
關鍵字: | binaphthalene; chirality; circularly polarized luminescence; luminescence; vesicles | 公開日期: | 11-四月-2023 | 出版社: | MDPI | 卷: | 28 | 期: | 8 | 來源出版物: | Molecules (Basel, Switzerland) | 摘要: | The introduction of biuret hydrogen-bonding sites onto chiral binaphthalene-based chromophores was investigated as a route to sub-micron-sized, vesicle-like aggregates endowed with chiroptical properties. The synthesis was conducted from the corresponding chiral 4,4'-dibromo-1,1'-bis(2-naphthol) via Suzuki-Miyaura coupling to afford luminescent chromophores whose emission spectrum could be tuned from blue to yellow-green through extension of the conjugation. For all compounds, the spontaneous formation of hollow spheres with a diameter of ca. 200-800 nm was evidenced by scanning electron microscopy, along with strong asymmetry in the circularly polarized absorption spectra. For some compounds, the emission also displayed circular polarization with values of glum = ca. 10-3 which could be increased upon aggregation. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/631231 | ISSN: | 1420-3049 | DOI: | 10.3390/molecules28083382 |
顯示於: | 化學系 |
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