Synthesis of Plasmonic Cu<sub>2‐<i>x</i></sub>Se@ZnS Core@Shell Nanoparticles

Wolf, Andreas; Härtling, Thomas; Hinrichs, Dominik; Dorfs, Dirk

doi:10.1002/cphc.201500907

Cited by 15 publications

(20 citation statements)

References 36 publications

(85 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The increase of the (NH 4 ) 2 MoS 4 concentration leads to the dissolution of Cu 2−x S particles and the reformation of amorphous Cu 2 MoS 4 . [178] In a recent work by Wolf et al [180] the LSPR in copper selenide NCs was stabilized by growing a ZnS shell around them. Indeed, it was observed that the oxidation of the copper chalcogenide core under ambient conditions is slowed down dramatically compared to the bare Cu 2-x Se NCs.…”

Section: Copper Chalcogenide (Cu 2−x E; E=s Se and Te) Ncsmentioning

confidence: 99%

“…Indeed, it was observed that the oxidation of the copper chalcogenide core under ambient conditions is slowed down dramatically compared to the bare Cu 2-x Se NCs. Instead, the core was effectively protected from reduction, even in the presence of reducing agents such as borane tert-butyamine complex and diisobutylaluminum hydride, giving rise to a stable particle LSPR, also under strongly reducing conditions [180].…”

mentioning

confidence: 99%

See 1 more Smart Citation

Plasmonic doped semiconductor nanocrystals: Properties, fabrication, applications and perspectives

2017

View full text Add to dashboard Cite

production from the NIR plasmon resonance or bio-medical applications in the biological window. In 2 this review we highlight the recent advances in the synthesis of various different plasmonic semiconductor NCs with LSPRs covering the entire spectral range, from the mid-to the NIR. We focus on copper chalcogenide NCs and impurity doped metal oxide NCs as the most investigated alternatives to noble metals. We shed light on the structural changes upon LSPR tuning in vacancy doped copper chalcogenide NCs and deliver a picture for the fundamentally different mechanism of LSPR modification of impurity doped metal oxide NCs. We review on the peculiar optical properties of plasmonic degenerately doped NCs by highlighting the variety of different optical measurements and optical modeling approaches. These findings are merged in an exhaustive section on new and exciting applications based on the special characteristics that plasmonic semiconductor NCs bring along.

show abstract

Section: Copper Chalcogenide (Cu 2−x E; E=s Se and Te) Ncsmentioning

confidence: 99%

mentioning

confidence: 99%

Plasmonic doped semiconductor nanocrystals: Properties, fabrication, applications and perspectives

2017

View full text Add to dashboard Cite

show abstract

“…Combination of metal NPs with vacancy‐doped plasmonic semiconductor nanocrystals together will open the access to unexplored phenomena resulting from the coupling between the collective electronic oscillation at surface of metal NPs and the hole oscillation in the neighboring semiconductors . Many metal‐semiconductor hetero‐nanostructures have been synthesized and the plasmonic properties have been investigated . Jiang et al.…”

Section: Introductionmentioning

confidence: 99%

Coupling Resonances of Surface Plasmon in Gold Nanorod/Copper Chalcogenide Core−Shell Nanostructures and Their Enhanced Photothermal Effect

Pan

Liu

et al. 2018

ChemPhysChem

View full text Add to dashboard Cite

Dual plasmonic Au@Cu S core-shell nanorods (NRs) have been fabricated by using a hydrothermal method and plasmon-coupled effect between the Au core and Cu S shell in the near-infrared (NIR) region. The extinction spectrum of Au@Cu S NRs is dominated by the surface plasmon resonance (SPR) of the Cu S shell, the transverse surface plasmon resonance (TSPR), and the longitudinal surface plasmon resonance (LSPR) of the Au NRs. With the Cu S shell increasing (fixed Au NRs), the TSPR peak slightly redshifts and the LSPR and SPR peaks blueshift, owing to competition between the redshift of the refractive index effect and blueshift from the plasmon coupled effect. Although, for Au@Cu S NRs, only TSPR and LSPR peaks can be seen and a redshift arises with the increasing Cu S shell thickness, implying that no plasmonic coupling between Au NRs and Cu S shell occurred. The extinction spectrum of the Au@Cu S NRs with three coupled resonance peaks is simulated by using the FDTD method, taking into account the electron-transfer effect. The dispersion properties of the coupling of Au@Cu S NRs with the LSPR of the initial Au core are studied experimentally by changing the length of the Au NRs, which are explained theoretically by the coupled harmonic oscillator model. The calculated coupled coefficients between SPR of the Cu S shell and LSPR of the Au NRs is 180 meV, which is much stronger than that of TSPR of Au NRs of 55 meV. Finally, the enhanced photothermal effect of Au@Cu S NRs has been demonstrated.

show abstract

“… 9 , 13 , 16 − 18 This makes Cu 2– x A NCs promising materials for photovoltaics, 15 photocatalysis, 19 sensing, 20 and nanoplasmonics. 9 , 11 , 17 , 21 , 22 …”

Section: Introductionmentioning

confidence: 99%

Shape Control of Colloidal Cu_2–xS Polyhedral Nanocrystals by Tuning the Nucleation Rates

et al. 2016

View full text Add to dashboard Cite

Synthesis protocols for colloidal nanocrystals (NCs) with narrow size and shape distributions are of particular interest for the successful implementation of these nanocrystals into devices. Moreover, the preparation of NCs with well-defined crystal phases is of key importance. In this work, we show that Sn(IV)-thiolate complexes formed in situ strongly influence the nucleation and growth rates of colloidal Cu2–xS polyhedral NCs, thereby dictating their final size, shape, and crystal structure. This allowed us to successfully synthesize hexagonal bifrustums and hexagonal bipyramid NCs with low-chalcocite crystal structure, and hexagonal nanoplatelets with various thicknesses and aspect ratios with the djurleite crystal structure, by solely varying the concentration of Sn(IV)-additives (namely, SnBr4) in the reaction medium. Solution and solid-state 119Sn NMR measurements show that SnBr4 is converted in situ to Sn(IV)–thiolate complexes, which increase the Cu2–xS nucleation barrier without affecting the precursor conversion rates. This influences both the nucleation and growth rates in a concentration-dependent fashion and leads to a better separation between nucleation and growth. Our approach of tuning the nucleation and growth rates with in situ-generated Sn–thiolate complexes might have a more general impact due to the availability of various metal–thiolate complexes, possibly resulting in polyhedral NCs of a wide variety of metal–sulfide compositions.

show abstract

Synthesis of Plasmonic Cu_2‐xSe@ZnS Core@Shell Nanoparticles

Cited by 15 publications

References 36 publications

Plasmonic doped semiconductor nanocrystals: Properties, fabrication, applications and perspectives

Plasmonic doped semiconductor nanocrystals: Properties, fabrication, applications and perspectives

Coupling Resonances of Surface Plasmon in Gold Nanorod/Copper Chalcogenide Core−Shell Nanostructures and Their Enhanced Photothermal Effect

Shape Control of Colloidal Cu_2–xS Polyhedral Nanocrystals by Tuning the Nucleation Rates

Contact Info

Product

Resources

About

Synthesis of Plasmonic Cu2‐xSe@ZnS Core@Shell Nanoparticles

Cited by 15 publications

References 36 publications

Plasmonic doped semiconductor nanocrystals: Properties, fabrication, applications and perspectives

Plasmonic doped semiconductor nanocrystals: Properties, fabrication, applications and perspectives

Coupling Resonances of Surface Plasmon in Gold Nanorod/Copper Chalcogenide Core−Shell Nanostructures and Their Enhanced Photothermal Effect

Shape Control of Colloidal Cu2–xS Polyhedral Nanocrystals by Tuning the Nucleation Rates

Contact Info

Product

Resources

About

Synthesis of Plasmonic Cu_2‐xSe@ZnS Core@Shell Nanoparticles

Shape Control of Colloidal Cu_2–xS Polyhedral Nanocrystals by Tuning the Nucleation Rates