Probing the orientations of coordination complex molecules onto the surface of ZnO nanoparticles by means of surface enhanced Raman scattering, UV–vis and DFT methods

Prakash, Om; Gautam, Priyanka; Singh, Ranjan K.

doi:10.1016/j.apsusc.2015.04.156

Cited by 6 publications

(4 citation statements)

References 28 publications

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“…All of these chemisorption interactions promote direct functional group–metal interactions and can minimize the distance between analytes and SERS substrates. In addition, the vibrational modes of molecules are not equally enhanced upon adsorption, and SERS spectral features and intensities are also dependent on adsorbate concentration, structure, , and orientation. , Thus, SERS provides information regarding the molecule–metal interface and mechanisms of metal–molecule interactions …”

Section: Chemisorption and Physisorption Of Molecules To Sers Substratesmentioning

confidence: 99%

“…In addition, the vibrational modes of molecules are not equally enhanced upon adsorption, and SERS spectral features and intensities are also dependent on adsorbate concentration, 134 structure, 135,136 and orientation. 136,137 Thus, SERS provides information regarding the molecule−metal interface 138 and mechanisms of metal− molecule interactions. 139 Assuming surface selection rules are satisfied, the vibrational modes from functional groups directly adsorbed to the metal are usually most enhanced, and the associated vibrational frequencies can vary and broaden significantly vs those observed in normal Raman spectra.…”

Section: ■ Chemisorption and Physisorption Of Molecules To Sers Subst...mentioning

confidence: 99%

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Promoting Intra- and Intermolecular Interactions in Surface-Enhanced Raman Scattering

Shrestha

Haes

2017

Anal. Chem.

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Section: Chemisorption and Physisorption Of Molecules To Sers Substratesmentioning

confidence: 99%

Section: ■ Chemisorption and Physisorption Of Molecules To Sers Subst...mentioning

confidence: 99%

Promoting Intra- and Intermolecular Interactions in Surface-Enhanced Raman Scattering

Shrestha

Haes

2017

Anal. Chem.

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“…The peak at 531 cm -1 , 571 cm -1 (ZnO 300°C) and 579 cm -1 (ZnO 500°C) can be assigned to A 1(LO) and E 1(LO) vibration mode. The sample absorption maybe the reason for the decrease of the Raman peaks [4, 46,47]. The broadened weak peak at 579 cm -1 (ZnO 500°C) appeared in the spectra is usually related with the defects of the O-vacancy and Zn interstitial [4,11].…”

Section: Raman Spectroscopymentioning

confidence: 99%

The Study of Structural, Physical and Electrochemical Activity of Zno Nanoparticles Synthesized by Green Natural Extracts of Sageretia Thea

Mayedwa¹,

Khalil²,

Mongwaketsi³

et al. 2017

Nano Res Appl

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In this contribution an exceptionally simple, cost effective and reliable method for biosynthesis of ZnO nanoparticles through using Sageretia thea natural extracts as an effective chelating agent. The morphological analysis shows ZnO has nanoscale particles size 28.09 nm ± 5 nm, crystalline and possess distinct nanostructure hexagonal wurtzite structure. Effects of heat on ZnO synthesised at room temperature caused bonds with in the molecule to be broken exhibited continuous weight loss with 3 quasi sharp changes and 3 endothermic peaks occurring at 79°C, 228°C and 300°C. A proposed mechanism of reaction for Zn(NO 3 ) 2 6H 2 O precursor with bioactive compounds in Sageretia thea extract such as phenolic acid, flavonoids, natural sterolin and vitamin based compounds to form ZnO nanoparticles. Electrochemically ZnO nanoparticles are electroactive by exhibiting charge transfer resistance (R ct ) 82006 Ω and bare GCE 3.7707 × 10 5 Ω. Showed good catalytic and conductivity which can be applied for pseudo capacitors.

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“…Further studies have found that metals such as Ru, Li, Na, K, Co, Fe, and Ni also have certain SERS enhancement effects . At the same time, a small amount of metal oxides and semiconductor materials, such as ZnO, TiO 2 , and Fe 2 O 3 , also have weak SERS enhancement effect. In addition, graphene and its derivatives have also been proven to have a certain SERS enhancement effect .…”

Section: Introductionmentioning

confidence: 99%

A Dimode Scattering Method for Ultratrace Dinitrofuran Detection with Nanopalladium Molecularly Imprinted Polymer Nanocatalytic Probe

Chen,

Wen,

Liang

et al. 2024

Langmuir

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With four nanoparticles as the nanomatrix, dinotefuran (DNF) as the template molecule, N-isopropylacrylamide as the functional monomer, trimethylolpropane and trimethacrylate as the cross-linker, four nanosurface molecularly imprinted polymer (MIP) bifunctional probes were prepared by microwave synthesis. It was found that palladium nanosurface MIP (Pd@MIP) not only recognized DNF but also had the strongest catalytic effect on the new nanogold indicator reaction of acrylic acid-HAuCl 4 , which was evaluated quickly with the slope procedure developed by us. The generated gold nanoparticles (AuNPs) not only possessed the resonance Rayleigh scattering (RRS) effect but also strong surface-enhanced Raman scattering (SERS) activity. The combination of Pd@MIP with DNF enhanced the catalytic effect by coupling the nanosurface electrons with π-electrons, thus enhancing both scattering signals. A new Pd@MIP nanoprobe catalytic-SERS/RRS dual-mode analytical platform was developed for the specific and sensitive detection of DNF. The linear ranges of the SERS and RRS methods were 0.075−0.75 and 0.1−0.75 nmol/ L, and the limits of detection were 0.03 and 0.06 nmol/L, respectively. The standard deviations were 0.54−2.39%, and the recoveries were 93−105%.

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Probing the orientations of coordination complex molecules onto the surface of ZnO nanoparticles by means of surface enhanced Raman scattering, UV–vis and DFT methods

Cited by 6 publications

References 28 publications

Promoting Intra- and Intermolecular Interactions in Surface-Enhanced Raman Scattering

Promoting Intra- and Intermolecular Interactions in Surface-Enhanced Raman Scattering

The Study of Structural, Physical and Electrochemical Activity of Zno Nanoparticles Synthesized by Green Natural Extracts of Sageretia Thea

A Dimode Scattering Method for Ultratrace Dinitrofuran Detection with Nanopalladium Molecularly Imprinted Polymer Nanocatalytic Probe

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