Exploitation of Guest Accessible Aliphatic Amine Functionality of a Metal–Organic Framework for Selective Detection of 2,4,6-Trinitrophenol (TNP) in Water

Mukherjee, Soumya; Desai, Aamod V.; Manna, Biplab; Inamdar, Arif I.; Ghosh, Sujit K.

doi:10.1021/acs.cgd.5b00902

Cited by 132 publications

(76 citation statements)

References 116 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The efficiency of RET originates from the large spectral overlap between MOF emission and 2,4,6-trinitrophenol (TNP) absorption. To the best of our knowledge, the MOF has a quenching constant comparable to the highest values known for MOF-based sensors for TNP in aqueous medium [21][22][23][24] . This study provides detailed mechanistic insight into the sensing behavior of MOF for analytes, and clarifies the interactions responsible for selectivities of analytes.…”

mentioning

confidence: 99%

Mechanistic insight into the sensing of nitroaromatic compounds by metal-organic frameworks

et al. 2019

View full text Add to dashboard Cite

There has been extensive research on the sensing of explosive nitroaromatic compounds (NACs) using fluorescent metal-organic frameworks (MOFs). However, ambiguity in the sensing mechanism has hampered the development of efficient explosive sensors. Here we report the synthesis of a hydroxyl-functionalized MOF for rapid and efficient sensing of NACs and examine in detail its fluorescence quenching mechanisms. In chloroform, quenching takes place primarily by exciton migration to the ground-state complex formed between the MOF and the analytes. A combination of hydrogen-bonding interactions and π-π stacking interactions are responsible for fluorescence quenching, and this observation is supported by single-crystal structures. In water, the quenching mechanism shifts toward resonance energy transfer and photo-induced electron transfer, after exciton migration as in chloroform. This study provides insight into florescence-quenching mechanisms for the selective sensing of NACs and reduces the ambiguity regarding the nature of interactions between the MOF and NACs.

show abstract

mentioning

confidence: 99%

Mechanistic insight into the sensing of nitroaromatic compounds by metal-organic frameworks

et al. 2019

View full text Add to dashboard Cite

show abstract

“…This non‐linear nature of the SV plot of TNP suggests self‐absorption, a combination of static and dynamic quenching or an energy transfer process between TNP and the MOF. The fitting of the SV plot for TNP gave a quenching constant of 3.1 × 10 4 M –1 , which is amongst the highest values known for MOFs . In an attempt to check the recyclability of 1 , after every fluorescence titration experiment the material was recovered by centrifugation, followed by washing with DMF several times.…”

Section: Resultsmentioning

confidence: 99%

3D Porous Heterometallic Coordination Polymer for the Detection of Nitroaromatic Explosives and Inhibiting Human Cancer Cells Growth

Wang

2018

Zeitschrift anorg allge chemie

View full text Add to dashboard Cite

A new heterometallic coordination polymer, namely [Cd 2 Sr(bdc) 3 (H 2 O) 2 ] n (1) (H 2 bdc = terephthalic acid), was synthesized via the solvothermal reaction of Cd(NO 3 ) 2 , Sr(NO 3 ) 2 , and H 2 bdc. The X-ray structural analysis reveals that compound 1 is a 3D framework based on 1D rod-shaped heterometallic metal-carboxylate chains as building subunits. Viewing along the crystallographic c axis, there exist large 1D rhombic channels with effective dimensions of ca.

show abstract

“…The enrichment of TNP does not only depend on free amine groups. Other groups show that the presence of azo‐groups in the linker backbone, cyano‐ or tetrazol‐ side groups, urea‐ side groups as well as urotropine‐ligands achieved the same effect. Preconcentration through specific interaction leads to a faster quenching behavior in fluorescence studies and a more sensitive detection of the analyte.…”

Section: Trace Gas Enrichment and Sensingmentioning

confidence: 90%

Adsorption and Detection of Hazardous Trace Gases by Metal–Organic Frameworks

et al. 2018

View full text Add to dashboard Cite

The quest for advanced designer adsorbents for air filtration and monitoring hazardous trace gases has recently been more and more driven by the need to ensure clean air in indoor, outdoor, and industrial environments. How to increase safety with regard to personal protection in the event of hazardous gas exposure is a critical question for an ever-growing population spending most of their lifetime indoors, but is also crucial for the chemical industry in order to protect future generations of employees from potential hazards. Metal-organic frameworks (MOFs) are already quite advanced and promising in terms of capacity and specific affinity to overcome limitations of current adsorbent materials for trace and toxic gas adsorption. Due to their advantageous features (e.g., high specific surface area, catalytic activity, tailorable pore sizes, structural diversity, and range of chemical and physical properties), MOFs offer a high potential as adsorbents for air filtration and monitoring of hazardous trace gases. Three advanced topics are considered here, in applying MOFs for selective adsorption: (i) toxic gas adsorption toward filtration for respiratory protection as well as indoor and cabin air, (ii) enrichment of hazardous gases using MOFs, and (iii) MOFs as sensors for toxic trace gases and explosives.

show abstract

Exploitation of Guest Accessible Aliphatic Amine Functionality of a Metal–Organic Framework for Selective Detection of 2,4,6-Trinitrophenol (TNP) in Water

Cited by 132 publications

References 116 publications

Mechanistic insight into the sensing of nitroaromatic compounds by metal-organic frameworks

Mechanistic insight into the sensing of nitroaromatic compounds by metal-organic frameworks

3D Porous Heterometallic Coordination Polymer for the Detection of Nitroaromatic Explosives and Inhibiting Human Cancer Cells Growth

Adsorption and Detection of Hazardous Trace Gases by Metal–Organic Frameworks

Contact Info

Product

Resources

About