TY - JOUR

T1 - A luminescent 2,1,3-benzoxadiazole-decorated zirconium-organic framework as an exceptionally sensitive turn-on sensor for ammonia and aliphatic amines in water

AU - Pavlov, Dmitry I.

AU - Sukhikh, Taisiya S.

AU - Ryadun, Aleksey A.

AU - Matveevskaya, Vladislava V.

AU - Kovalenko, Konstantin A.

AU - Benassi, Enrico

AU - Fedin, Vladimir P.

AU - Potapov, Andrei S.

N1 - Funding Information: This work was supported by the Russian Science Foundation, Grant no. 19-73-20087, the synthesis of the ligand was funded by RFBR, project number 20-33-70026. NIIC analytical characterization facilities used in this work operate with support from the Ministry of Science and Higher Education of the Russian Federation, project numbers 121031700321-3 and 121031700313-8. The authors thank the XRD Facility of NIIC SB RAS for the data collection. The Siberian Branch of the Russian Academy of Sciences (SB RAS) Siberian Supercomputer Centre is gratefully acknowledged for providing supercomputer facilities. Publisher Copyright: © 2022 Royal Society of Chemistry. All rights reserved.

PY - 2022/2/28

Y1 - 2022/2/28

N2 - A new dicarboxylate ligand - 4,7-di(p-carboxyphenyl)-2,1,3-benzoxadiazole was synthesised and used for the preparation of the 2,1,3-benzoxadiazole-decorated zirconium(iv)-based metal-organic framework UiO-68(bod). Single-crystal X-ray diffraction analysis revealed it to belong to the UiO-68 family with fcu topology. The framework UiO-68(bod) exhibited a high photoluminescence quantum yield (35%) and a strong fluorescence turn-on response to ammonia and aliphatic amines in water. The detection limits of the amines were in the range of 60-240 nM, while for ammonia the detection limit was as low as 6.5 ppb (384 nM), which is the best value among the MOFs sensitive to NH3 in aqueous solutions. The mechanism behind the response was rationalised on the basis of DFT calculations. Paper test-strips for the simple and express detection of ammonia/amines in water were fabricated.

AB - A new dicarboxylate ligand - 4,7-di(p-carboxyphenyl)-2,1,3-benzoxadiazole was synthesised and used for the preparation of the 2,1,3-benzoxadiazole-decorated zirconium(iv)-based metal-organic framework UiO-68(bod). Single-crystal X-ray diffraction analysis revealed it to belong to the UiO-68 family with fcu topology. The framework UiO-68(bod) exhibited a high photoluminescence quantum yield (35%) and a strong fluorescence turn-on response to ammonia and aliphatic amines in water. The detection limits of the amines were in the range of 60-240 nM, while for ammonia the detection limit was as low as 6.5 ppb (384 nM), which is the best value among the MOFs sensitive to NH3 in aqueous solutions. The mechanism behind the response was rationalised on the basis of DFT calculations. Paper test-strips for the simple and express detection of ammonia/amines in water were fabricated.

UR - http://www.scopus.com/inward/record.url?scp=85126957587&partnerID=8YFLogxK

U2 - 10.1039/d1tc05488k

DO - 10.1039/d1tc05488k

M3 - Article

AN - SCOPUS:85126957587

VL - 10

SP - 5567

EP - 5575

JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

SN - 2050-7526

IS - 14

ER -