Two Pb(II) dicarboxylates constructed by rigid terephthalate or flexible d(+)-camphorate with different 3D motif based on cooperative effect of steric hindrance of ligand and lone pair electrons

Tan, Yan‐Xi; Meng, Fanyong; Wu, Mei-Chun; Zeng, Ming‐Hua

doi:10.1016/j.molstruc.2009.03.037

Cited by 36 publications

(10 citation statements)

References 39 publications

(28 reference statements)

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“…Figure A shows the PXRD patterns of pristine OX-1 and Pb-BDC MOFs and the Pb/OX-1 transformed material. Remarkably, the PXRD spectrum of the transformed Pb/OX-1 matches that of the pristine Pb-BDC MOF, − and in contrary to the Ag/OX-1 materials, no features of OX-1 diffraction Bragg peaks were observed. This fact implies a complete transformation of OX-1 to the Pb-BDC MOF in the first 20 min, suggesting a higher affinity toward Pb ions than to the Ag ones.…”

Section: Resultsmentioning

confidence: 80%

Facile and Fast Transformation of Nonluminescent to Highly Luminescent Metal–Organic Frameworks: Acetone Sensing for Diabetes Diagnosis and Lead Capture from Polluted Water

Gutiérrez

Möslein

Tan

2021

ACS Appl. Mater. Interfaces

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Metal-organic frameworks (MOFs) stand as one of the most promising materials for the development of advanced technologies owing to their unique combination of properties. The conventional synthesis of MOFs involves a direct reaction of the organic linkers and metal salts, however, their post-synthetic modification is a sophisticated route to produce new materials or to confer novel properties that cannot be attained through traditional methods. This work describes the post-synthetic MOF-to-MOF transformation of a non-luminescent MOF (Zn-based OX-1) into a highly luminescent framework (Ag-based OX-2) by a simple immersion of the former in a silver salt solution. The conversion mechanism exploits the uncoordinated oxygen atoms of terephthalate linkers found in OX-1, instead of the unsaturated metal sites commonly employed, making the reaction much faster. The materials derived from the OX-1 to OX-2 transformation are highly luminescent and exhibit a selective response to acetone, turning them into a promising candidate 2 for manufacturing fluorometric sensors for the diagnosis and monitoring of diabetes mellitus. Our methodology can be extended to other metals such as lead (Pb). The fabrication of a polymer mixed-matrix membrane containing OX-1 is used as a proof-of-concept for capturing Pb ions (as pollutants) from water. This research instigates the exploration of alternative methodologies to confer MOFs with special aptitudes for photochemical sensing or for environmental applications such as water purification.

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Section: Resultsmentioning

confidence: 80%

Facile and Fast Transformation of Nonluminescent to Highly Luminescent Metal–Organic Frameworks: Acetone Sensing for Diabetes Diagnosis and Lead Capture from Polluted Water

Gutiérrez

Möslein

Tan

2021

ACS Appl. Mater. Interfaces

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“…In our previous study of functional MOFs, ,, we have found structural recognition by driving force of the lone pair electrons from the hemidirected Pb 2+ in MOFs . We also identified multiple emissions and pH-sensitive luminesce in a highly stable Zn 5 cluster for bioimaging, as well as broadband white-light emission by low-cost Zn(II)-1,3,5-benzenetricarboxylate MOFs .…”

Section: Introductionmentioning

confidence: 65%

“…In our previous study of functional MOFs, 4,17,18 we have found structural recognition by driving force of the lone pair electrons from the hemidirected Pb 2+ in MOFs. 19 We also identified multiple emissions and pH-sensitive luminesce in a highly stable Zn 5 cluster for bioimaging, 20 as well as broadband white-light emission by low-cost Zn(II)-1,3,5-benzenetricarboxylate MOFs. 21 Here, we report three fluorescent Pb-MOFs of [Pb 2 (pia) 2 (DMA)]•DMA (1), [Pb 2 (pia) 2 (DMF)]•1.5DMF (2), and [Pb 2 (pia) 2 (DMF)]•NEt 3 (3), where H 2 pia is a triangular linker of 5-(pyridin-4-yl)isophthalic acid, DMA = N,N-dimethylacetamide, DMF = N,N-dimethylformamide, and NEt 3 = triethylamine.…”

Section: ■ Introductionmentioning

confidence: 95%

Color-Tuning and Near-Sunlight White Emission in Highly Stable Rod-Spacer MOFs with Defective Dicubane Based Lead(II)-Carboxyl Chains

Yin

Wang

et al. 2019

Inorg. Chem.

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The active lone pair electron effect and highly flexible coordination geometry of Pb 2+ prevented the rational construction of metal−organic frameworks (MOFs) but promoted excellent fluorescence tuning. The regulation on organic and alkali templates facilitated the assemblies of three new Pb-MOFs: [Pb 2 (pia) 2 (DMA)]•DMA (1), [Pb 2 (pia) 2 (DMF)]•1.5DMF (2), and [Pb 2 (pia) 2 (DMF)]•NEt 3 (3). They were rigid rod-spacer and double-walls frameworks, which possess defective dicubane [Pb 4 O 6 ] based metal-carboxyl chains constructed from both semidirected and holodirected Pb 2+ ions. These MOFs exhibited thermal stability up to 370 °C and unprecedented chemical stability in H 2 O and acidic (pH 2) and alkaline (pH 12) aqueous solutions, found for the first time in Pb-MOFs. A single-phase and rareearth-free white-emitting phosphor, 1, was screen out, which showed a near-sunlight and human-vision-friendly broadband spectrum covering the full visible region, possessing the close-to-pure-white chromaticity coordinates of (0.332, 0.347), a near-daylight color temperature of 5696 K, and a high color rendering index of 95. The replacement of DMF as apical ligand and guest in 2 resulted in an intrinsic single and narrow emission at 562 nm with yellow color. The convenient yellow-and-blue color-tuning until white for 2 was realized by either solution or solid blending with blue-emissive H 2 pia, benefited from their highly matched excitation spectra. Using large NEt 3 as template guest induced great framework distortion for 3 and led to white emission with chromaticity coordinates of (0.302, 0.294), stemming from nonequivalent dual emission at 450 and 545 nm. In-depth structure analysis revealed intra-/interchain Pb•••Pb interactions in the lead(II)-carboxyl chains greatly affected the photochemical output.

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“…On the other hand, some Pb(II) carboxylate compounds have exhibited various luminescent properties [14][15][16]. Although there are also some examples related to Pb(II) complexes of dicarboxylates with common spacers such as 1,4-BDC [3,17,18], À O 2 C-ðCH 2 Þ n -CO À 2 (n = 2-4) [18], 1,2-cyclohexanedicarboxylate (1,2-CHDC) and 1,3-CHDC [19], 1,4-naphthalenedicarboxylate (NDC) [14], the Pb(II) complexes of dicarboxylates with other spacers are still limited in number. 4-Carboxycinnamic acid (4-H 2 cca) is an uncommon dicarboxylic acid with a rigid and relatively long -Ph-CH@CH-spacer.…”

Section: -Carboxycinnamic Acid Lead(ii)mentioning

confidence: 99%

Hydrothermal synthesis and crystal structure of a luminescent 3D lead(II) coordination polymer [Pb(4-cca)]n (4-cca=4-carboxycinnamate)

Ren

et al. 2009

Inorganic Chemistry Communications

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Two Pb(II) dicarboxylates constructed by rigid terephthalate or flexible d(+)-camphorate with different 3D motif based on cooperative effect of steric hindrance of ligand and lone pair electrons

Cited by 36 publications

References 39 publications

Facile and Fast Transformation of Nonluminescent to Highly Luminescent Metal–Organic Frameworks: Acetone Sensing for Diabetes Diagnosis and Lead Capture from Polluted Water

Facile and Fast Transformation of Nonluminescent to Highly Luminescent Metal–Organic Frameworks: Acetone Sensing for Diabetes Diagnosis and Lead Capture from Polluted Water

Color-Tuning and Near-Sunlight White Emission in Highly Stable Rod-Spacer MOFs with Defective Dicubane Based Lead(II)-Carboxyl Chains

Hydrothermal synthesis and crystal structure of a luminescent 3D lead(II) coordination polymer [Pb(4-cca)]n (4-cca=4-carboxycinnamate)

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