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A Miniaturized Linear pH Sensor Based on a Highly Photoluminescent Self‐Assembled Europium(III) Metal–Organic Framework
Author(s) -
Harbuzaru Bogdan V.,
Corma Avelino,
Rey Fernando,
Jordá Jose L.,
Ananias Duarte,
Carlos Luis D.,
Rocha João
Publication year - 2009
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200902045
Subject(s) - photoluminescence , europium , quantum yield , metal organic framework , materials science , metal , absorption (acoustics) , nanotechnology , linear range , inorganic chemistry , luminescence , chemical engineering , optoelectronics , chemistry , optics , detection limit , fluorescence , metallurgy , composite material , physics , adsorption , chromatography , engineering
Small but important : A miniaturized prototype for pH sensing in the pH range 5–7.5 has been constructed from a photoluminescent Eu 3+ metal–organic framework that contains two different Eu 3+ sites (Eu1 and Eu2; see picture) and self‐assembles through hydrogen bonding and π–π interactions. This material has a very high quantum yield and an excellent balance between absorption, energy transfer, and emission rate.