2024-03-29T02:25:25Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1548732021-12-27T15:33:11Zcom_10261_5063com_10261_5com_10261_52707col_10261_5066col_10261_52708
00925njm 22002777a 4500
dc
Schiller, Jana
author
Pérez-Ruiz, Raúl
author
Sampedro, Diego
author
Marqués-López, Eugenia
author
Herrera, Raquel P.
author
Díaz Díaz, David
author
2016
In this work we demonstrate the ability of a multifaceted N,Nʹ-disubstituted urea to selectively recognize fluoride anion (F) among other halides. This additional function is now added to its already reported organocatalytic and organogelator properties. The signaling mechanism relies on the formation of a charge-transfer (CT) complex between the urea-based sensor and F in the ground state with a high association constant as demonstrated by absorption and fluorescence spectroscopy. The nature of the hydrogen bonding interaction between the sensor and F was established by H-NMR studies and theoretical calculations. Moreover, the recovery of the sensor was achieved by addition of methanol.
Sensors 16(5): 658 (2016)
http://hdl.handle.net/10261/154873
10.3390/s16050658
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100003339
http://dx.doi.org/10.13039/501100003329
27171087
Fluoride
Charge-transfer complex
Fluorescence spectroscopy
Absorption spectroscopy
Association constant
Anion recognition
Sensor
N,N′-disubstituted urea
Fluoride anion recognition by a multifunctional urea derivative: An experimental and theoretical study