Fluorescent metal nanoclusters: prospects for photoinduced electron transfer and energy harvesting

Bhunia, Soumyadip; Mukherjee, Manish; Purkayastha, Pradipta

doi:10.1039/d4cc00021h

Cited by 3 publications

(3 citation statements)

References 156 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…First, the fluorescence quenching phenomena may be explained by photoinduced electron transfer (PET), which involves the possible shifting of an energized state electron from the donor fluorophore component to the acceptor’s low-lying empty π* orbital. Hence, the extent of PET is controlled by the electron dearth of the analyte and the energy state of the lowest unoccupied orbital of the acceptor moiety or analyte. , …”

Section: Resultsmentioning

confidence: 99%

“…Hence, the extent of PET is controlled by the electron dearth of the analyte and the energy state of the lowest unoccupied orbital of the acceptor moiety or analyte. 61,62 Furthermore, an investigation exploiting the Turbomole (v7.0) for density functional theory (DFT) has been conducted to comprehend the various luminescence quenching mechanisms of the targeted analyte while monitoring the HOMO−LUMO energy profile of TNP and CPs (Table 2). 63 As a consequence, the photoexcitation of an electron from the HOMO to the LUMO of CPs and its possible transmission to the low-lying unoccupied LUMO of the associating TNP molecule constitute a PET-based sensing mechanism (Figure ).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

See 1 more Smart Citation

First Crystallographic Evidence of Polarity-Assisted Pseudohalides Controllable Heteroaldazine-Based Coordination Polymers: A New Tributary in Low Level Recognition of Explosive from Real-Day Matrices

Chattopadhyay,

Ghorai,

Datta

et al. 2024

Crystal Growth & Design

View full text Add to dashboard Cite

Polarity-assisting pseudohalide-controlled self-assembly of coordination polymers (CPs) is of immense significance for structural tunability and is quite necessary for exploration of the links between structure and properties. Herein, we have synthesized two polarity-assisting pseudohalide-controlled CPs, CPCd-1 and CPCd-2at room temperature and systematically characterized through single-crystal X-ray diffraction (SC-XRD) methodology. Interestingly, strong and continuous π•••π intermolecular interactions influence both CPs to ensure high luminescence properties in the solvent medium and in the solid phase. Further, these luminous CPs have been utilized for discriminating recognition of the lethal explosive 2,4,6trinitrophenol (TNP). Notably, CPCd-2 shows a lower detection limit (193 ppb) toward TNP detection than CPCd-1 (the detection limit is 401 ppb), which is also confirmed by the theoretical scenario. In addition, the sensing mechanism is established via PET-ICT-π•••π interaction pathways. Both CPs have numerous practical applications and have been ascertained as innovative ones in environmental domains. This type of pseudohalide-controlled CPs with quinoline-napthaldehyde heteroaldazine-based moieties is scanty in the literature that can detect TNP entirely from the aqueous phase.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

First Crystallographic Evidence of Polarity-Assisted Pseudohalides Controllable Heteroaldazine-Based Coordination Polymers: A New Tributary in Low Level Recognition of Explosive from Real-Day Matrices

Chattopadhyay,

Ghorai,

Datta

et al. 2024

Crystal Growth & Design

View full text Add to dashboard Cite

show abstract

“…Upon photoexcitation, the charge appears to be distributed from the entire fluorophore to its inner acceptor region. While the PET mechanism has been heavily investigated, − further exploration and a comprehensive discussion of PCC are necessary to unlock its full potential for designing tetrazine labels with improved fluorogenicity.…”

Section: Introductionmentioning

confidence: 99%

Photoinduced Charge Centralization Quenches the Fluorescence of Conjugation-Fused Tetrazine Labels with Red-to-Near-Infrared Emissions

Shen,

Liu

2024

Bioconjugate Chem.

View full text Add to dashboard Cite

Tetrazine-derived fluorogenic labels are extensively studied for their potential in biological and medical imaging. Nonetheless, the fluorescence quenching mechanism in numerous precursors continues to be debated, particularly as the wavelengths extend into the red and near-infrared (NIR) regions. This challenge poses obstacles to systematically optimizing their fluorogenicity, i.e., achieving red-shifted wavelengths and improved fluorescence turn-on signals through click reactions. This paper highlights the significance of photoinduced charge centralization (PCC), a quenching mechanism observed in tetrazine-fused fluorogenic labels with integrated π-conjugations. PCC is primarily responsible for the quenching effects observed in such labels emitting in the red-to-NIR spectrum. Drawing from structure−property relationships, this study proposes two molecular design strategies that incorporate the PCC mechanism and constitutional isomerization to develop high-performance tetrazine-based labels. These strategies facilitate multiplex fluorescence imaging following click reactions, promising significant advancements in bioorthogonal imaging techniques.

show abstract

Functional structures assembled based on Au clusters with practical applications

Chen,

Zou,

Hossain

et al. 2024

Biomater. Sci.

View full text Add to dashboard Cite

show abstract

Fluorescent metal nanoclusters: prospects for photoinduced electron transfer and energy harvesting

Abstract: Research on noble metal nanoclusters (MNCs) (elements with filled electron d-band) is boosting ahead because of the extensive and extraordinary chemical, optical, and physical properties of these materials. Because of...

Cited by 3 publications

References 156 publications

First Crystallographic Evidence of Polarity-Assisted Pseudohalides Controllable Heteroaldazine-Based Coordination Polymers: A New Tributary in Low Level Recognition of Explosive from Real-Day Matrices

First Crystallographic Evidence of Polarity-Assisted Pseudohalides Controllable Heteroaldazine-Based Coordination Polymers: A New Tributary in Low Level Recognition of Explosive from Real-Day Matrices

Photoinduced Charge Centralization Quenches the Fluorescence of Conjugation-Fused Tetrazine Labels with Red-to-Near-Infrared Emissions

Functional structures assembled based on Au clusters with practical applications

Contact Info

Product

Resources

About