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Switch On/Switch Off Signal in an MOF‐Guest Crystalline Device
Author(s) -
Mazzeo Paolo P.,
Maini Lucia,
Braga Dario,
Valenti Giovanni,
Paolucci Francesco,
Marcaccio Massimo,
Barbieri Andrea,
Ventura Barbara
Publication year - 2013
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201300533
Subject(s) - dabco , chemistry , ferrocene , metal organic framework , octane , quenching (fluorescence) , luminescence , lanthanide , quantum yield , photochemistry , electron transfer , yield (engineering) , adsorption , fluorescence , electrochemistry , organic chemistry , ion , optoelectronics , electrode , physics , materials science , quantum mechanics , metallurgy
A metal organic framework (MOF) based on the [Cu 4 I 4 DABCO 2 ] cluster (DABCO = 1,4‐diazabicyclo[2.2.2]octane), MOF 1 , shows bright emission with a maximum at 556 nm and an emission quantum yield of 0.53 in the solid state. When the large cavities of the MOF are loaded during the synthesis with different amounts of ferrocene {FeCp 2 , [(η 5 ‐C 5 H 5 ) 2 Fe II ]}, the luminescence of MOF 1 decreases with the increase in the ferrocene content, reaching an almost complete quenching for 3.5 wt.‐% of cage loading, corresponding to the complete filling of the MOF cavities. When an electric potential is applied to the FeCp 2 @MOF 1 deposited onto an ITO glass, the Fe II Cp 2 is oxidised to Fe III Cp 2 + , and the MOF 1 emission is partially switched on again, indicating that a photoinduced electron‐transfer reaction is contributing to the quenching process.