Rigidification-Induced Emissive Metal–Carbene Complexes for Artificial Light Harvesting

Purba, Prioti Choudhury; Maitra, P. K.; Bhattacharyya, Soumalya; Mukherjee, Partha Sarathi

doi:10.1021/acs.inorgchem.3c01075

Cited by 5 publications

(5 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, Hahn and our group have shown an important feature of silver(I)–carbene bond directed discrete assemblies where the rigidification imparted to the structure by metal coordination was exploited to enhance the emission of weakly/nonemissive ligands in dilute solution . It is of immense importance to use such enhanced emission, and we have demonstrated the use of emissive Ag(I)–NHC-based supramolecular assemblies for picric acid sensing and artificial light harvesting …”

Section: Introductionmentioning

confidence: 93%

Coordination-Induced Emissive Poly-NHC-Derived Metallacage for Pesticide Detection

Maitra,

Bhattacharyya,

Purba

et al. 2024

Inorg. Chem.

Self Cite

View full text Add to dashboard Cite

Developing sensitive, rapid, and convenient methods for the detection of residual toxic pesticides is immensely important to prevent irreversible damage to the human body. Luminescent metal−organic cages and macrocycles have shown great applications, and designing highly emissive supramolecular systems in dilute solution using metal−ligand coordination-driven self-assembly is demanded. In this study, we have demonstrated the development of a silver− carbene bond directed tetranuclear silver(I)-octacarbene metallacage [Ag 4 (L) 2 ]-(PF 6 ) 4 (1) based on an aggregation-induced emissive (AIE) cored 1,1′,1″,1‴-((1,4phenylenebis(ethene-2,1,1-triyl))tetrakis(benzene-4,1-diyl))tetrakis(3-methyl-1Himidazol-3-ium) salt (L). A 36-fold enhanced emission was observed after metallacage (1) formation when compared with the ligand (L) in dilute solution due to the restriction of intramolecular motions imparted by metal−ligand coordination. Such an increase in fluorescence made 1 a potential candidate for the detection of a broad-spectrum pesticide, 2,6-dichloro-nitroaniline (DCN). 1 was able to detect DCN efficiently by the fluorescence quenching method with a significant detection limit (1.64 ppm). A combination of static and dynamic quenching was applicable depending on the analyte concentration. The use of silver−carbene bond directed self-assembly to exploit coordination-induced emission as an alternative to AIE in dilute solution and then apply this approach to solve health and safety concerns is noteworthy and carries a lot of potential for future developments.

show abstract

Section: Introductionmentioning

confidence: 93%

Coordination-Induced Emissive Poly-NHC-Derived Metallacage for Pesticide Detection

Maitra,

Bhattacharyya,

Purba

et al. 2024

Inorg. Chem.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Notably, many metal chemosensors bearing a TPE backbone have been developed to exhibit CIE. − Since Stang and co-workers pioneered the synthesis of the fluorescent tetra(4-pyridyl)-substituted TPE to form a metallacage (Figure ), TPE-based metal chemosensors have been developed by incorporating coordination sites such as pyridine and phosphine, carboxylates, − or N-heterocyclic carbene (NHC) − units at the 4-positions of the phenyl groups in TPE.…”

Section: Introductionmentioning

confidence: 99%

Tetrakispyrazolylethene: Protonation-Induced Emission

Takemasa,

Nozaki

2024

J. Org. Chem.

View full text Add to dashboard Cite

Tetrakispyrazolylethene (1) was synthesized from pyrazole and hexachloroethane through a one-step substitution reaction. The increase of emission was detected both in solid and aqueous THF solution, compared with that in anhydrous THF. While the former originates from the crystal packing, the latter is attributed to the protonation-induced emission, independent of aggregation, based on the optical measurement under varying concentrations and particle-size distribution analysis.

show abstract

“…It also utilizes diverse precursors with different bite angles, making it a preferred choice among various noncovalent self-assembly processes. The resulting supramolecular architectures find applications in supramolecular catalysis, drug delivery, light harvesting, and photoswitching …”

Section: Introductionmentioning

confidence: 99%

Self-Assembly of a Water-Soluble Pd₁₆ Square Bicupola Architecture and Its Use in Aerobic Oxidation in Aqueous Medium

Maitra,

Bhattacharyya,

Hickey

et al. 2024

J. Am. Chem. Soc.

Self Cite

View full text Add to dashboard Cite

Designing supramolecular architectures with uncommon geometries has always been a key goal in the field of metal−ligand coordination-driven self-assembly. It acquires added significance if functional building units are employed in constructing such architectures for fruitful applications. In this report, we address both these aspects by developing a water-soluble Pd 16 L 8 coordination cage 1 with an unusual square orthobicupola geometry, which was used for selective aerobic oxidation of aryl sulfides. Self-assembly of a benzothiadiazole-based tetra-pyridyl donor L with a ditopic cis-[(tmeda)Pd(NO 3 ) 2 ] acceptor [tmeda = N,N,N′,N′-tetramethylethane-1,2diamine] produced 1, and the geometry was determined by single-crystal X-ray diffraction study. Unlike the typically observed tri-or tetrafacial barrel, the present Pd 16 L 8 coordination assembly features a distinctive structural topology and is a unique example of a water-soluble molecular architecture with a square orthobicupola geometry. Efficient and selective aerobic oxidation of sulfides to sulfoxides is an important challenge as conventional oxidation generally leads to the formation of sulfoxide along with toxic sulfone. Cage 1, designed with a ligand containing a benzothiadiazole moiety, demonstrates an ability to photogenerate reactive oxygen species (ROS) in water, thus enabling it to serve as a potential photocatalyst. The cage showed excellent catalytic efficiency for highly selective conversion of alkyl and aryl sulfides to their corresponding sulfoxides, therefore without the formation of toxic sulfones and other byproducts, under visible light in aqueous medium.

show abstract

Rigidification-Induced Emissive Metal–Carbene Complexes for Artificial Light Harvesting

Cited by 5 publications

References 53 publications

Coordination-Induced Emissive Poly-NHC-Derived Metallacage for Pesticide Detection

Coordination-Induced Emissive Poly-NHC-Derived Metallacage for Pesticide Detection

Tetrakispyrazolylethene: Protonation-Induced Emission

Self-Assembly of a Water-Soluble Pd₁₆ Square Bicupola Architecture and Its Use in Aerobic Oxidation in Aqueous Medium

Contact Info

Product

Resources

About

Rigidification-Induced Emissive Metal–Carbene Complexes for Artificial Light Harvesting

Cited by 5 publications

References 53 publications

Coordination-Induced Emissive Poly-NHC-Derived Metallacage for Pesticide Detection

Coordination-Induced Emissive Poly-NHC-Derived Metallacage for Pesticide Detection

Tetrakispyrazolylethene: Protonation-Induced Emission

Self-Assembly of a Water-Soluble Pd16 Square Bicupola Architecture and Its Use in Aerobic Oxidation in Aqueous Medium

Contact Info

Product

Resources

About

Self-Assembly of a Water-Soluble Pd₁₆ Square Bicupola Architecture and Its Use in Aerobic Oxidation in Aqueous Medium