Single lanthanide(III) ion white light emission is in high demand since it provides the advantage of requiring only one chromophore for the control of the color. Herein, a series of Ga3+/Dy3+ metallacrowns (MCs) is presented, demonstrating outstanding white light colorimetric properties with CIE chromaticity coordinates of (0.309, 0.334) and correlated color temperature (CCT) equal to 6670 K for the MC emitting the closest to the standard white color. Experimental data reveal that the CIE coordinates within the studied series of MCs are controlled mainly by the Dy3+-centered emission rather than by the ligand-centered bands, implying that Dy3+ can be tuned as a single ionic white light emitter by a simple modification of the coordination environment.

中文翻译：

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通过调节 Ga3+/Dy3+ 金属冠络合物的第一配位球可以精细控制 Dy3+ 白光发射

单镧系元素 (III) 离子白光发射的需求量很大，因为它提供了仅需要一种发色团来控制颜色的优势。在此，一系列 Ga3+/Dy3+ 金属冠 (MC) 展示了出色的白光色度特性，CIE 色度坐标为 (0.309, 0.334)，相关色温 (CCT) 等于 6670 K，因为 MC 发射最接近于标准的白色。实验数据表明，所研究的一系列 MC 中的 CIE 坐标主要受 Dy3+ 中心发射控制，而不是由配体中心带控制，这意味着 Dy3+ 可以通过简单修改协调环境。