High sensitivity absorption measurement of small metal clusters embedded in an argon matrix

Conus, F.; Lau, J. Tobias; Félix, Christian

doi:10.1063/1.2369640

Cited by 31 publications

(36 citation statements)

References 23 publications

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“…Ag 6 The measured spectrum of Ag 6 shows mainly one intense and narrow transition at 3.45 eV with a shoulder at 3.65 eV. The measurements in argon 7 showed two distinct double peaks at an average value of 3.63 and 4.15 eV, the latter structure being not visible in neon.…”

Section: A Comparison To Previous Experimental Resultsmentioning

confidence: 94%

“…6. Briefly, the clusters are formed from a metal target sputtered by a 10 mA Xe + ion beam at 25 keV.…”

Section: Experimental and Computationmentioning

confidence: 99%

“…It was however not possible to measure the absorption spectra of Ag 4 , Ag 6 , Ag 10 , Ag 12 , Ag 14 clusters due to their low abundance in the molecular beam. More recently a new absorption setup was developed 6 by elongating the optical path and thus increasing the sensitivity. This allowed to measure, in an argon matrix grown at 28 K, the absorption spectra of all clusters up to Ag 14 .…”

Section: Introductionmentioning

confidence: 99%

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Ultraviolet-visible absorption of small silver clusters in neon: Agn (n = 1–9)

Lecoultre

Rydlo

Buttet

et al. 2011

The Journal of Chemical Physics

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106

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We present optical absorption and fluorescence spectra in the UV-visible range of size selected neutral Ag n clusters (n = 1-9) in solid neon. Rich and detailed optical spectra are found with linewidths as small as 50 meV. These spectra are compared to time dependent density functional theory implemented in the TURBOMOLE package. Excellent agreement between theory and experiment is achieved in particular for the dominant spectroscopic features at photon energies below 4.5 eV. This allows a clear attribution of the observed electronic transitions to specific isomers. Optical transitions associated to the s-electrons are concentrated in the energy range between 3 and 4 eV and well separated from transitions of the d-electrons. This is in contrast to the other coinage metals (Au and Cu) which show a strong coupling of the d-electrons.

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Section: A Comparison To Previous Experimental Resultsmentioning

confidence: 94%

“…6. Briefly, the clusters are formed from a metal target sputtered by a 10 mA Xe + ion beam at 25 keV.…”

Section: Experimental and Computationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ultraviolet-visible absorption of small silver clusters in neon: Agn (n = 1–9)

Lecoultre

Rydlo

Buttet

et al. 2011

The Journal of Chemical Physics

Self Cite

106

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“…20 Briefly, clusters are formed from a metal target sputtered by a 15 mA Xe + ion current at 25 keV. The cluster cations are guided to a quadrupole mass filter and then to a cold sample holder ͑28 K͒, where they are deposited together with argon and neutralized to form a seeded rare gas matrix of neutral species.…”

Section: Methodsmentioning

confidence: 99%

“…20 To enhance matrix transparency, our matrix was grown at a higher temperature ͑28 K͒ compared to previous measurements ͑10 K͒, 12 showing unexpected differences. We discuss these discrepancies in the light of the different matrix growth conditions and show that this leads to an understanding of the influence of the matrix on the optical response of small clusters.…”

Section: Introductionmentioning

confidence: 99%

Matrix effects on the optical response of silver nanoclusters

Conus

Lecoultre

Rydlo

et al. 2006

The Journal of Chemical Physics

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We report absorption spectra for Ag 7 , Ag 9 , and Ag 11 in an argon matrix grown at a temperature of 28 K and compare them with previous spectra of the same species measured in matrices of argon grown at lower temperatures as well as in neon matrices. We discuss the discrepancies in the light of the matrix crystallinity and show that this leads to an understanding of the influence of the matrix on the optical response of small clusters.

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Theoretical investigation of the weak interactions of rare gas atoms with silver clusters by resonance Raman spectroscopy modeling

Yasrebi

Jamshidi

2017

Int J of Quantum Chemistry

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The interactions of rare gas atoms (Rg 5 Ar, Kr, and Xe) with small neutral and cationic silver clusters have been investigated by density functional methods and the effect of these weak interactions on the resonance Raman spectra of the complexes has been evaluated. The resonance Raman technique that depends on the properties of ground and excited state, seems deeply sensitive to the weak rare gas-metal cluster interactions, and the use of inert gases has been proven to be an excellent approach to recognize the ability of this technique to detect extremely weak interactions. In this work, for Ag 4;6 2Rg, and Ag 1 3;5 2Rg complexes the IR, normal and resonance Raman spectra have been calculated and the effect of rare gas-cluster stretching vibration (v st Ag n 2Rg ) on the pattern and the relative intensities of different spectra have been investigated. The resonance Raman spectra for the weakly interacted complexes (with the interaction energies less than 22.0 kcal/mol) exhibit the v st Ag n 2Rg vibration with the detectable intensity that its intensity increases by going from Ag 6 -Ar to Ag 6 -Xe complex. Moreover, the resonance Raman spectra (based on the excited state gradient approximation) for high intensity nearly degenerate excited states, proved the effect of accumulation of the excited state charge density on the relative intensity of v st Ag n 2Rg vibration.excited-state gradient approximation, metal cluster, resonance Raman, weak interaction | I N T R O D U C T I O NNoble coinage metal clusters have drawn considerable attention in basic studies and applications due to their particular and novel chemical and physical properties. The unique optical [1][2][3][4][5][6][7][8] and chemical [9][10][11] properties of gold and silver clusters have been investigated for the small sizes up to particles containing several hundreds of atoms with different methods. [12,13] Moreover, controlling and modifying these properties by adjusting size and composition have resulted in a wide range of applications in ultrasensitive chemical and biological sensing. [14][15][16][17] The electronic and structural properties of small metal clusters have been investigated with several spectroscopic methods in the range of electronic and vibrational energies. UV2visible, infrared, and Raman spectroscopy are all powerful tools that have been leveraged for the investigation of metal clusters in the gas phase or embedded in rare gas matrices. [18][19][20][21][22][23][24][25] The rare gas matrix can often provide a chemically inert and an optically transparent medium for the preparation and characterization of small metal clusters. [26,27] Therefore, in several experiments, the rare gas layers were used to weaken the interaction between metal clusters grown or deposited on the surfaces.More recently, the interactions between noble metal and rare gas atom have attracted great interest for theoretical and experimental investigations due to their respective noble characters. The electrostatic charge-transfer interaction and dispersion for...

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High sensitivity absorption measurement of small metal clusters embedded in an argon matrix

Cited by 31 publications

References 23 publications

Ultraviolet-visible absorption of small silver clusters in neon: Agn (n = 1–9)

Ultraviolet-visible absorption of small silver clusters in neon: Agn (n = 1–9)

Matrix effects on the optical response of silver nanoclusters

Theoretical investigation of the weak interactions of rare gas atoms with silver clusters by resonance Raman spectroscopy modeling

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