%A Zhang,Mei-Li %A Zhai,Zhi-Min %A Yang,Xiao-Gang %A Huang,Ya-Dan %A Zheng,Yan-Jin %A Ma,Lu-Fang %D 2020 %J Frontiers in Chemistry %C %F %G English %K Metal-organic framework,Room temperature phosphorescence,Photoelectron performance,host-guest,π-stacking %Q %R 10.3389/fchem.2020.593948 %W %L %M %P %7 %8 2020-November-11 %9 Original Research %# %! Near-Infrared Phosphorescence MOF %* %< %T Near-Infrared Phosphorescence Emission of Binuclear Mn(II) Based Metal-Organic Framework for Efficient Photoelectric Conversion %U https://www.frontiersin.org/articles/10.3389/fchem.2020.593948 %V 8 %0 JOURNAL ARTICLE %@ 2296-2646 %X The development of metal-organic framework (MOF) based room-temperature phosphorescence (RTP) materials has raised extensive concern owing to their widespread applications in the field of anti-counterfeiting, photovoltaics, photocatalytic reactions, and bio-imaging. Herein, one new binuclear Mn(II) based 3D MOF [Mn2(L)(BMIB)·(H2O)] (1) (H5L = 3,5-bis(3,5-dicarboxylphenxoy) benzoic acid, BMIB = tran-4-bis(2-methylimidazolyl)butylene) has been synthesized by a facile hydrothermal process. In 1, the protonated BMIB cations show infinite π-stacking arrangement, residing in the channels of the 3D network extended by L ligand and binuclear Mn(II) units. The orderly and uniform host-guest system at molecular level emits intense white light fluorescence and long-lived near infrared phosphorescence under ambient conditions. These photophysical processes were well-studied by density functional theory (DFT) calculations. Photoelectron measurements reveal high photoelectron response behavior and incident photon-to-current efficiency (IPCE).