Source: School of Chemistry
Written by: School of Chemistry
Edited by: Wang Dongmei

Core-shell or striped hetero-Ln-MOF hierarchical single-crystals are obtained via liquid-phase anisotropic epitaxial growth, maintaining identical periodic organization, while simultaneously exhibiting spatially segregated structure. Different types of domain and orientation-controlled multi-color photophysical models are presented, which show either visually distinguishable, or visible/near infrared (NIR) emissive colors. This provides a new “bottom-up” strategy toward the design of hierarchical molecular systems, offering high-throughput and multiplexed luminescence color-tunability and readability. The unique capability of combining spectroscopic coding with 3D (three dimensional) microscale spatial coding is thereof established, providing potential applications in anti-counterfeiting, color barcoding, and other types of integrated and miniaturized optoelectronic materials and devices.

This work has recently been published on Angew. Chem. Int. Ed. (Mei Pan, Yi-Xuan Zhu, Kai Wu, Ling Chen, Ya-Jun Hou, Shao-Yun Yin, Hai-Ping Wang, Ya-Nan Fan and Cheng-Yong Su*, Epitaxial Growth of Hetero-Ln-MOF Hierarchical Single-Crystals for Domain- and Orientation-Controlled Multi-color Luminescence 3D Coding Capability, Angew. Chem. Int. Ed. 2017, 56, 14582-14586).

The authors thank the financial support of NSF of China, NSF of Guangdong Province, FRF for the Central Universities, and STPP of Guangzhou.