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Enhanced Ligand‐Based Luminescence in Metal–Organic Framework Sensor
Author(s) -
Legrand Alexandre,
Pastushenko Anton,
Lysenko Vladimir,
Geloen Alain,
Quadrelli Elsje Alessandra,
Canivet Jerome,
Farrusseng David
Publication year - 2016
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201600124
Subject(s) - luminescence , metal organic framework , fluorescence , ligand (biochemistry) , materials science , sulfide , nanotechnology , photoluminescence , optoelectronics , chemistry , optics , biochemistry , physics , receptor , adsorption , metallurgy
Metal–organic frameworks are appealing hybrid solids which attract continuously growing interest. Their advantageous application in sensing devices is demonstrated here. In particular, the use of a short‐pulse laser excitation of luminescent metal‐organic framework is reported for the first time to favor the ligand‐based emission. The designed MOF‐based system achieves in vitro H 2 S dosing by turn‐on fluorescence with unprecedented sensitivity. The Al‐MIL‐101‐based sensor detects sulfide produced by living cells and sulfide‐releasing molecules in physiological media with a constant accuracy at sub‐micromolar levels. The reported sensitivity is suitable for medical applications and opens new perspectives in the design of new point‐of‐care testing devices. The detailed relationship between photoluminescence mechanisms and chemical modification of the MOF upon sensing is also reported.