Metal

Quantum mechanics

Adsorption

Photochemistry

Metallurgy

Materials science

Tetraphenylethylene

Inorganic chemistry

Biphenyl

Business

Physics

Nanotechnology

Organic chemistry

Luminescence

Fluorescence

Metal-organic framework

Aggregation-induced emission

Strontium

Cobalt

Chemistry

Optoelectronics

Angewandte Chemie International Edition

Herein we report two new TPE-based 3D MOFs, that is, Sr-ETTB and Co-ETTB (TPE=Tetraphenylethylene, H8 ETTB=4',4''',4''''',4'''''''-(ethene-1,1,2,2-tetrayl)tetrakis(([1,1'-biphenyl]-3,5-dicarboxylic acid))). Through tailoring outer shell electron configurations of SrII and CoII cations, the fluorescence intensity of the MOFs is tuned from high emission to complete non-emission. Sr-ETTB with strong blue fluorescence shows reversible fluorescence variations in response to pressure and temperature, which is directly related to the reversible deformation of the crystal structure. In addition, non-emissive Co-ETTB counterpart exhibits a turn-on fluorescent enhancement under the stimulation of analyte histidine. In the process, TPE-cored linkers in the MOFs are released through competitive coordination substitution and subsequently reassembled to perform aggregation-induced luminescence behavior originated from the organic linkers.

Stimuli‐Responsive Luminescent Properties of Tetraphenylethene‐Based Strontium and Cobalt Metal–Organic Frameworks