An Efficient Visible and Near-Infrared (NIR) Emitting Sm(III) Metal-Organic Framework (Sm-MOF) Sensitized by Excited-State Intramolecular Proton Transfer (ESIPT) Ligand

Ling Chen; Hao Zhang; Mei Pan; Zhang-Wen Wei; Hai-Ping Wang; Ya-Nan Fan; Cheng-Yong Su

doi:10.1002/asia.201600330

An Efficient Visible and Near-Infrared (NIR) Emitting Sm(III) Metal-Organic Framework (Sm-MOF) Sensitized by Excited-State Intramolecular Proton Transfer (ESIPT) Ligand

Chem Asian J. 2016 Jun 21;11(12):1765-9. doi: 10.1002/asia.201600330. Epub 2016 May 25.

Authors

Ling Chen¹, Hao Zhang¹, Mei Pan^{2

3}, Zhang-Wen Wei¹, Hai-Ping Wang¹, Ya-Nan Fan¹, Cheng-Yong Su^{4

5}

Affiliations

¹ MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, Lehn Institute of Functional Materials, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China.
² MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, Lehn Institute of Functional Materials, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China. panm@mail.sysu.edu.cn.
³ State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China. panm@mail.sysu.edu.cn.
⁴ MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, Lehn Institute of Functional Materials, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China. cesscy@mail.sysu.edu.cn.
⁵ State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, China. cesscy@mail.sysu.edu.cn.

PMID: 27140938
DOI: 10.1002/asia.201600330

Abstract

We report herein an unprecedented example of a luminescent Sm(III) metal-organic framework (Sm-MOF), in which both the visible and near-infrared (NIR) emissions of Sm(3+) ions are able to be sensitized by an excited-state intramolecular proton transfer (ESIPT) ligand. Due to the solvent-mediated interchange between enol and keto excited states of the ligand and subsequent energy transfer rate to Sm(3+) ions, the luminescent decay lifetime of the Sm-MOF can be tuned in different solvent-grinding systems.

Keywords: luminescence; near-infrared; proton transfer ligand; sensitization; solvent effect.