Lanthanide Metal–Organic Framework Microrods: Colored Optical Waveguides and Chiral Polarized Emission

• Published in: Angewandte Chemie International Edition Vol. 56; no. 27; pp. 7853 - 7857
• Main Authors: Yang, Xiaogang, Lin, Xianqing, Zhao, Yibing, Zhao, Yong Sheng, Yan, Dongpeng
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 26-06-2017
• Edition: International ed. in English
• Subjects: Crystal structure; Emission; Luminescence; Metal-organic frameworks; Metals; microrods; Optical waveguides; Photoelectric emission; Photoluminescence; Photonics; Photons; polarized emission; Spectral emissivity; Wave propagation; waveguide; Waveguides; microrods; polarized emission; metal-organic frameworks; waveguide
• ISSN: 1433-7851; 1521-3773
• DOI: 10.1002/anie.201703917

Lanthanide metal–organic frameworks (Ln‐MOFs) have received much attention owing to their structural tunability and widely photofunctional applications. However, successful examples of Ln‐MOFs with well‐defined photonic performances at micro‐/nanometer size are still quite limited. Herein, self‐assemblies of 1,3,5‐benzenetricarboxylic acid (BTC) and lanthanide ions afford isostructural crystalline Ln‐MOFs. Tb‐BTC, Eu@Tb‐BTC, and Eu‐BTC have 1D microrod morphologies, high photoluminescence (PL) quantum yields, and different emission colors (green, orange, and red). Spatially PL resolved spectra confirm that Ln‐MOF microrods exhibit an optical waveguide effect with low waveguide loss coefficient (0.012≈0.033 dB μm−1) during propagation. Furthermore, these microrods feature both linear and chiral polarized photoemission with high anisotropy.
Lightsabers: Three crystalline isostructural lanthanide metal–organic frameworks (Ln‐MOFs) with 1D microrod morphologies, high photoluminescence quantum yields, and different emission colors are prepared. The Ln‐MOFs feature low waveguide loss as well as high linear‐ and chiral‐polarization anisotropy.