We report emerging circularly polarized luminescence (CPL) at 4f-4f transitions when lanthanide (Eu^III and Tb^III) tris(β-diketonate) embedded to cellulose triacetate (CTA), cellulose acetate butyrate (CABu), D-/L-glucose pentamethyl esters (D-/L-Glu), and D-/L-arabinose tetramethyl esters (D-/L-Ara) are in film states. Herein, 6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedionate (fod) and 2,2,6,6-tetramethyl-3,5-heptanedione (dpm) were chosen as the β-diketonates. The g_lum value of Eu(fod)₃ in CABu are +0.0671 at 593 nm (⁵D0→7F₁) and −0.0059 at 613 nm (⁵D0→7F₂), respectively, while those in CTA are +0.0463 and −0.0040 at these transitions, respectively. The g_lum value of Tb(fod)₃ in CABu are −0.0029 at 490 nm (⁵D4→7F₆), +0.0078 at 540 nm (⁵D4→7F₅), and −0.0018 at 552 nm (⁵D4→7F₅), respectively, while those in CTA are −0.0053, +0.0037, and −0.0059 at these transitions, respectively. D-/L-Glu and D-/L-Ara induced weaker g_lum values at 4f-4f transitions of Eu(fod)₃, Tb(fod)₃, and Tb(dpm)₃. For comparison, Tb(dpm)₃ in α-pinene showed clear CPL characteristics, though Eu(dpm)₃ did not. A surplus charge neutralization hypothesis was applied to the origin of attractive intermolecular interactions between the ligands and saccharides. This idea was supported from the concomitant opposite tendency in upfield ¹⁹F-NMR and downfield ¹H-NMR chemical shifts of Eu(fod)₃ and the opposite Mulliken charges between F-C bonds (fod) and H-C bonds (CTA and D-/L-Glu). An analysis of CPL excitation (CPLE) and CPL spectra suggests that (+)- and (–)-sign CPL signals of Eu^III and Tb^III at different 4f-4f transitions in the visible region are the same with the (+)-and (–)-sign exhibited by CPLE bands at high energy levels of Eu^III and Tb^III in the near-UV region.

我们报告了4时出现的圆偏振发光（CPL）F-4F当镧系元素（Eu ^III和Tb ^III）三（β-二酮）嵌入三醋酸纤维素（CTA），醋酸丁酸纤维素（卡布）， d-/大号-葡萄糖五甲基酯（d--/大号-胶），以及 d-/大号-阿拉伯糖四甲酯（d--/大号-阿拉）处于电影状态。本文中的6,6,7,7,8,8,8,8-七氟-2,2-二甲基-3,5-辛二酸二乙酯（fod）和2,2,6,6-四甲基-3,5-庚二酮（dpm选择）作为β-二酮酸酯。的G_LUM铕（FOD）的值₃在卡布在593 nm下为+0.0671（⁵d0→7F ₁）和-0.0059在613 nm（⁵d0→7F ₂），而那些在CTA在这些转换处分别为+0.0463和-0.0040。的G_LUM铽（FOD）的值₃在卡布在490 nm下为−0.0029（⁵d4→7F ₆），在540 nm（+0.0078）（⁵d4→7F ₅）和-0.0018在552 nm（⁵d4→7F ₅），而在CTA 在这些过渡时分别为-0.0053，+ 0.0037和-0.0059。 d--/大号-胶 和 d--/大号-阿拉 诱发弱 G_流明值为4F-4FEu（fod）₃，Tb（fod）₃和Tb（dpm）_3的跃迁。为了进行比较，α-pine烯中的Tb（dpm）₃显示出清晰的CPL特性，而Eu（dpm）₃没有。多余的电荷中和假说被应用于配体和糖类之间有吸引力的分子间相互作用的起源。Eu（fod）_3的高场¹⁹ F-NMR和低场¹ H-NMR伴随的相反趋势以及两者之间相反的Mulliken电荷同时支持这种观点F-C键（fod）和 H-C债券（CTA 和 d--/大号-胶）。对CPL激发（CPLE）和CPL光谱的分析表明，Eu ^III和Tb ^III在不同的4下的（+）-（-）符号CPL信号F-4F可见光区域的跃迁与在近紫外光区域中Eu ^III和Tb ^III的高能级下CPLE谱带显示的（+）和（–）符号相同。