Fibronectin-derived protein forms a protein corona on gold nanoparticles: synthesis, Raman and optical properties of a new plasmonic nanocarrier

Candreva, Angela; Crea, Roberto; Nucera, Antonello; Barberi, R.; Castriota, Marco; Deda, Massimo La

doi:10.1007/s10853-023-08592-3

Cited by 2 publications

(2 citation statements)

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“…Raman spectroscopy has been widely used for studying many kinds of systems, such as: semiconductors, polymeric gel, phthalocyanine films, carbon-based systems (graphene and nanotubes), biopolymers, biomimetic biological systems and so on [ 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 ].…”

Section: Resultsmentioning

confidence: 99%

Development of Electrochromic Devices, Based on Polymeric Gel, for Energy Saving Applications

2023

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In this work, the implementation of an electrochromic device (10 cm × 10 cm in size) for energy saving applications has been presented. As electrochromic system has been used with an electrochromic solution (ECsol) made by ethyl viologen diperchlorate [EV(ClO4)2], 1,1′-diethyl ferrocene (DEFc) and propylene carbonate (PC), as solvent. The final system has been obtained by mixing the ECsol, described above, with a polymeric system made by Bisphenol-A glycerolate (1 glycerol/phenol) diacrylate (BPA) and 2,2-Dimethoxy-2-phenylacetophenone (Irgacure 651) in a weight percentage equal to 60:40% w/w, respectively. Lithography has been used to make a spacer pattern with a thickness of about 15–20 µm between the two substrates. Micro-Raman spectroscopy confirmed the presence of the EV•+ as justified by the blue color of the electrochromic device in the ON state. Electrochemical and optical properties of the electrochromic device have been studied. The device shows reversible electrochromic behavior as confirmed by cyclic color variation due to the reduction and oxidation process of the EV2+/EV•+ couple. The electrochromic device shows a variation of the % transmittance in the visible region at 400 nm of 59.6% in the OFF state and 0.48% at 3.0 V. At 606 nm the transmittance in the bleached state is 84.58% in the OFF state and then decreases to 1.01% when it is fully colored at 3.0 V. In the NIR region at 890 nm, the device shows a transmittance of 74.3% in the OFF state and 23.7% at 3.0 V while at 1165 nm the values of the transmittance changed from 83.21% in the OFF state to 1.58% in the ON state at 3.0 V. The electrochromic device shows high values of CCR% and exhibits excellent values of CE in both visible and near-infrared regions when switched between OFF/ON states. In the NIR region at 890 nm, electrochromic devices can be used for the energy-saving of buildings with a promising CE of 120.9 cm2/C and 420.1 cm2/C at 1165 nm.

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Section: Resultsmentioning

confidence: 99%

Development of Electrochromic Devices, Based on Polymeric Gel, for Energy Saving Applications

2023

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“…For this reason, several techniques have been recently developed to overcome such limitations, the ensemble of which goes under the name of surface-enhanced Raman spectroscopy (SERS) [22,23]. SERS allows for the detection of species with small Raman cross-sections (such as biological systems) and analytes presented in traces up to single-molecule detection [24][25][26][27][28][29][30][31]. Essentially, the weak intensity of a Raman signal Nanomaterials 2024, 14, 875 2 of 10 coming from molecules adjacent to metallic nanostructures can be enhanced by employing the localized surface plasmon resonance (LSPR) generated in the near-field of these nanostructures [32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Raman Scattering Enhancement through Pseudo-Cavity Modes

Caligiuri,

Nucera,

Patra

et al. 2024

Nanomaterials

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Raman spectroscopy plays a pivotal role in spectroscopic investigations. The small Raman scattering cross-section of numerous analytes, however, requires enhancement of the signal through specific structuring of the electromagnetic and morphological properties of the underlying surface. This enhancement technique is known as surface-enhanced Raman spectroscopy (SERS). Despite the existence of various proposed alternatives, the approach involving Fabry–Pérot cavities, which constitutes a straightforward method to enhance the electromagnetic field around the analyte, has not been extensively utilized. This is because, for the analyte to experience the maximum electric field, it needs to be embedded within the cavity. Consequently, the top mirror of the cavity will eventually shield it from the external laser source. Recently, an open-cavity configuration has been demonstrated to exhibit properties similar to the classic Fabry–Pérot configuration, with the added advantage of maintaining direct accessibility for the laser source. This paper showcases how such a simple yet innovative configuration can be effectively utilized to achieve remarkable Raman enhancement. The simple structure, coupled with its inexpensive nature and versatility in material selection and scalability, makes it an ideal choice for various analytes and integration into diverse Raman apparatus setups.

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Fibronectin-derived protein forms a protein corona on gold nanoparticles: synthesis, Raman and optical properties of a new plasmonic nanocarrier

Cited by 2 publications

References 59 publications

Development of Electrochromic Devices, Based on Polymeric Gel, for Energy Saving Applications

Development of Electrochromic Devices, Based on Polymeric Gel, for Energy Saving Applications

Raman Scattering Enhancement through Pseudo-Cavity Modes

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