Recent developments in luminescent coordination polymers: Designing strategies, sensing application and theoretical evidences

Liu, Jianqiang; Luo, Zhidong; Pan, Ying; Singh, Ashish Kumar; Trivedi, Manoj; Kumar, Abhinav

doi:10.1016/j.ccr.2019.213145

Cited by 410 publications

(149 citation statements)

References 273 publications

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“…As we all know, the structural changes, energy and electron transfer are the main reasons that cause the luminescent quenching of LMOFs, according to some reported literature. [ 56–61 ] Thus, we investigated the luminescent quenching mechanism from the above mentioned points. Firstly, the pivotal peak positions of PXRD patterns after sensing of analytes are consistent with those of the original ones, excluding the structural collapse of NUC‐6 (Figure S19).…”

Section: Resultsmentioning

confidence: 99%

A self‐penetrating and chemically stable zinc (ii)‐organic framework as multi‐responsive chemo‐sensor to detect pesticide and antibiotics in water

Fan

Wang

Zhao

et al. 2020

Applied Organom Chemis

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Guided by the self‐penetrating features can improve the stability of metal organic frameworks (MOFs), an unprecedented 3D self‐penetrated framework, {[Zn (tptc)0.5(bimb)]·H2O}n (NUC‐6, here NUC corresponding to North University of China), with 3D (4,4)‐c {86} net, was designed. Benefit from the high chemical stability and excellent luminescent property, NUC‐6 can be act as an efficient multi‐response chemo‐sensor in detecting dichloronitroaniline pesticide and nitrofuran antibiotics in water with the detection limits are 116 ppb for DCN pesticide, 16 ppb for NFT antibiotic, and 12 ppb for NTZ antibiotic. Besides, the mechanisms of luminescence quenching were revealed from the viewpoint of internal filter effect (IFE) and photo‐induced electron transfer (PET), implied by the optical spectroscopy and quantum chemical calculation. This work provides a promising strategy to design stable MOFs by improving the self‐penetrating features and to expand their practical applications in the detection of organic pollutants in aqueous medium.

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Section: Resultsmentioning

confidence: 99%

A self‐penetrating and chemically stable zinc (ii)‐organic framework as multi‐responsive chemo‐sensor to detect pesticide and antibiotics in water

Fan

Wang

Zhao

et al. 2020

Applied Organom Chemis

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“…Lanthanide coordination polymers including lanthanide-organic frameworks, one of the important MOFs, are generally synthesized by hydrothermal methods which require high pressure and high temperature that has impeded scalable synthesis of lanthanide MOFs and their industrial utilization [19][20][21]. Other reported synthetic methods such as solvothermal, microwave-assisted solvothermal, and sonochemical synthesis are also energy consumable [22][23][24]. Diffusion method, which is seen as low-yield and time-consuming method, has ever been used to synthesize MOFs.…”

Section: Introductionmentioning

confidence: 99%

“…Among applications of lanthanide MOFs, fluorescence has been widely studied and highlighted because sharp emissive peaks from lanthanide ions are unique and its emission covers a wide range of spectrum from visible to NIR and far NIR. Furthermore, organic ligands as linkers in lanthanide MOFs can act as sensitizers to the emission of lanthanide ions which possess very small molar extinction coefficients (ε) due to the forbidden nature of f-f transitions in lanthanide atomic shells [22]. However, synthesizing strong emissive lanthanide MOFs with good quantum yield is not easy to be done.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional terbium(III) metal–organic framework constructed by thiophene-2,5-dicarboxylate: synthesis, crystal structure and fluorescent properties

Tian

Zheng

et al. 2020

SN Appl. Sci.

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A novel Tb(III) metal-organic framework was synthesized by a multi-layer diffusion method at room temperature. Adjacent Tb(III) ions were connected together by bridging carboxylic groups to construct one-dimensional chains and the metal-organic framework based on these parallel 1D chains was formed through thiophene-2,5-dicarboxylate bridges. UV-Vis and fluorescent emission spectra as well as theoretical calculation showed that organic ligands acted as sensitizers to Tb(III) fluorescence. With the excitation of 325 nm, the emission peaks of this compound were found at 488, 545, 587, and 621 nm which were attributed to 5

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“…In addition, LLCT has specifically been observed in other LMOFs recently reported. [62,63] Li and Han [64] highlight that the host-guest interaction can be generated and that some molecular orbitals of guests appear to be located between the molecular orbitals involved in the emissive state; for that reason, radiative deactivation is blocked, resulting in the turn-off. In this sense, our results indicated that, when NB is confined to the Zn-MOF, it generates a mixture of states of Zn-MOF and NB.…”

Section: Fluorescence Quenching Pathwaymentioning

confidence: 99%

Sensing mechanism elucidation of a chemosensor based on a metal‐organic framework selective to explosive aromatic compounds

Hidalgo‐Rosa

Treto‐Suárez

Schott

et al. 2020

Int J of Quantum Chemistry

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Theoretical elucidation of the turn-off mechanism of the luminescence of a chemosensor based on a metal-organic framework (MOF) [Zn 2 (OBA) 4 (BYP) 2 ] (BYP: 4,4 0bipyridine; H 2 OBA: 4,4 0-oxybis[benzoic acid]), selective to nitrobenzene (NB) via quantum chemical computations, is presented. The electronic structure and optical properties of Zn-MOF were investigated through the combination of density functional theory (DFT) and time-dependent DFT methods. Our results indicate that the fluorescence emission is governed by a linker (BPY)-to-linker (OBA) charge transfer (LLCT) involving orbitals π-type. Next, the interaction with the analyte was analyzed, where very interesting results were obtained, that is, the lowest unoccupied molecular orbital is now composed of orbitals from NB, which changes the emissive state of the Zn-MOF. This suggests that the LLCT process is blocked, inducing the fluorescence quenching. Otherwise, the Morokuma-Ziegler energy decomposition and natural orbitals for chemical valence on the Zn-MOF-NB interactions were studied in detail, which illustrate the possible channels of charge transfer between Zn-MOF and NB. Finally, we believe that this proposed methodology can be applied to different chemosensor-analyte systems to evidence the molecular and electronic factors that govern the sensing mechanisms.

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Recent developments in luminescent coordination polymers: Designing strategies, sensing application and theoretical evidences

Cited by 410 publications

References 273 publications

A self‐penetrating and chemically stable zinc (ii)‐organic framework as multi‐responsive chemo‐sensor to detect pesticide and antibiotics in water

A self‐penetrating and chemically stable zinc (ii)‐organic framework as multi‐responsive chemo‐sensor to detect pesticide and antibiotics in water

Three-dimensional terbium(III) metal–organic framework constructed by thiophene-2,5-dicarboxylate: synthesis, crystal structure and fluorescent properties

Sensing mechanism elucidation of a chemosensor based on a metal‐organic framework selective to explosive aromatic compounds

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