Claudia Barolo

Claudia Barolo
Università degli Studi di Torino | UNITO · Dipartimento di Chimica

Ph.D. in Chemical Science

About

182
Publications
25,384
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5,242
Citations
Citations since 2016
110 Research Items
3607 Citations
20162017201820192020202120220200400600
20162017201820192020202120220200400600
20162017201820192020202120220200400600
20162017201820192020202120220200400600

Publications

Publications (182)
Article
text In this work, a thorough electrochemical impedance spectroscopy (EIS) study is performed of both liquid and polymeric aqueous dye-sensitised solar cells (a-DSSCs), which are also compared with conventional organic solvent-based devices. The main purpose is unveiling phenomena limiting the efficiency of water-based photovoltaics. Indeed, EIS sp...
Article
Flexible electronics have become widespread in the last decade. Given the environmental crisis that our planet is facing, the use of sustainable materials, and less time and energy-consuming methods for the fabrication of flexible and light weight devices, have become crucial. In this context, the present study proposes a low environmental impact a...
Article
Full-text available
The effect of differently substituted 2,2'-bipyridine ligands (i.e. 6,6'-dimethyl-2,2'-bipyridine, 5,5'-dimethyl-2,2'-bipyridine, 6,6'-dimethoxy-2,2'-bipyridine and 2,2'-bipyridine) on the reversible oxidation of the resulting CuI homoleptic complexes is investigated by means of a multi-technique approach (electronic and vibrational spectroscopies,...
Article
Full-text available
Imidazo[1,5-a]pyridine is a stable scaffold, widely used for the development of emissive compounds in many application fields (e.g., optoelectronics, coordination chemistry, sensors, chemical biology). Their compact shape along with remarkable photophysical properties make them suitable candidates as cell membrane probes. The study of the membrane...
Article
Full-text available
Biophosphors with fluorescent proteins (FPs) are promising candidates to replace rare-earth color down-converting filters for white light-emitting diodes (LEDs). There is, however, a lack of deep-red FPs meeting high photostabilities, photoluminescence quantum yields (ϕ), and throughput expression yields. Herein, a new approach for the design of hi...
Article
Full-text available
White light-emitting electrochemical cells (LECs) comprising only [Cu(N^N)(P^P)]⁺ have not been reported yet, as all the attempts towards blue-emitting complexes failed. Herein, a multivariate analysis based on prior-art [Cu(N^N)(P^P)]⁺-based thin-film lighting (>90 papers) and refined with computational calculations identified the best blue-emitti...
Article
Flexible perovskite solar cells feature high power-per-weight ratio and low cost manufacturing, which make them very attractive for space and avionic applications. It is thus paramount to assess their response to the harsh space environment. Although an increasing number of studies have been investigating the effect of electron and proton radiation...
Article
Polymethine dyes (PMD) have proved to be excellent candidates in the biomedical field for potential applications in both diagnostic and therapeutic. However, PMD application in biomedicine is hindered by their poor solubility and stability in physiological conditions. Therefore, the incorporation of these dyes in nanosystems could be important to p...
Article
Titanium Silicalite-1 (TS-1) is a zeolite used as catalyst in partial oxidation reactions, whose synthesis is often performed under hydrothermal conditions by exploiting alkoxides as Ti and Si precursors. A...
Article
Light based 3D printing technologies, such as digital light processing (DLP), allow for the additive manufacturing of complex 3D objects at fast speeds and with high resolution. Typical printable formulations...
Article
The polymorphism and solid-state peculiarities of imidazo [1,5-a]pyridine derivatives have been investigated by a theoretical and experimental approach to shed light on the structural and energetic features. Four couples of polymorphs and an ionic crystal form have been reported and analysed. Hirshfeld Surface and Energy Frameworks have been used t...
Article
In this work, optically active devices are fabricated by Digital Light Processing (DLP) 3D printing technology employing copper-iodide photoluminescent clusters as smart dyes in the photocurable formulation. These compounds are easy to synthesize, low cost and possess large stoke shift, thermochromic and rigidochromic properties, which make them pa...
Article
Full-text available
The nanocomposites of nickel oxide (NiO) and zirconia (ZrO2) (NZNCs) are particularly effective photocathodic materials in p-type dye-sensitized solar cells (p-DSCs) and tandem DSCs (t-DSCs). The t-DSCs obtained from P1-sensitized NZNC as photocathode and nanostructured titania (TiO2) sensitized with squaraine VG10-C8 as photoanode display overall...
Article
An unprecedented chromophore, based on a nitrogen fused tricyclic heterocycle, is presented. This prototype molecule can be considered a “rigidified” monomethine cyanine dye and the central core is isoelectronic to pyridine-based BODIPY analogues, such as boron difluoride dipyridylmethene. The chromophore was synthesized and its photophysical prope...
Article
In the last few years, imidazo [1,5-a] pyridine derivatives have attracted growing attention due to their unique optical behaviours. Herein, a series of trifluoromethylated substituted imidazo [1,5-a] pyridine derivatives were synthesized and their optical properties investigated. Depending on the position of the trifluoromethylated substituents on...
Article
Full-text available
Dye-sensitized solar cell (DSSC) is one of the promising photovoltaic (PV) technologies for applications requiring high aesthetic features combined with energy production such as building integration PV (BIPV). In this context, DSSCs have the ability to be wavelength selective, thanks to the development of new sensitizers by molecular engineering....
Article
Full-text available
In the last few years, imidazo[1,5-a]pyridine scaffolds and derivatives have attracted growing attention due to their unique chemical structure and optical behaviors. In this work, a series of pyridylimidazo[1,5-a]pyridine derivatives and their corresponding pyridinium salts were synthesized and their optical properties investigated to evaluate the...
Article
Full-text available
Aqueous Dye-Sensitized Solar Cells In article number 2000823, Federico Bella, Matteo Bonomo, and co-workers have successfully applied Design of Experiment to engineer the composition of the electrolyte in quasi-solid aqueous DSSCs that leads to photoconversion efficiency approaching 5% and remarkable stability. Aqueous dye-sensitized solar cells ar...
Article
Full-text available
Cyanine dyes (CD) are a functional class of organic molecules used in several applications ranging from photography to bioimaging. CDs most well-known features reside on high molar extinction coefficients up to 105 L mol-1cm-1 and on the absorption spectra, ranging from 500 to 1000 nm, which can be fine-tuned both by extending the length of the cen...
Article
Full-text available
In the quest for sustainable materials for quasi-solid-state (QS) electrolytes in aqueous dye-sensitized solar cells (DSSCs), novel bioderived polymeric membranes were prepared in this work by reaction of preoxidized kraft lignin with poly(ethylene glycol)diglycidylether (PEGDGE). The effect of the PEGDGE/lignin relative proportions on the characte...
Article
Full-text available
Despite the growing use of Deep Eutectic Solvents (DESs) as green reaction media in a number of organic syntheses, no significant reactions of diazonium salts in these solvents are known in the literature. In this paper, we present the behavior of arenediazonium tetrafluoroborates in new halide salts/polyol-based DESs, the nature of which is invest...
Article
Full-text available
Perovskite solar cells are a hot topic of photovoltaic research, reaching, in few years, an impressive efficiency (25.5%), but their long-term stability still needs to be addressed for industrial production. One of the most sizeable reasons for instability is the doping of the Hole Transporting Material (HTM), being the salt commonly employed as a...
Article
Full-text available
Flexible perovskite solar cells (f-PSCs) are light-weight, conformal and thus ideal for seamless integration of photovoltaics onto wearable and portable electronics. Nevertheless, the spread of f-PSCs is limited by both the lower efficiency compared to rigid counterparts and the employment of costly materials. Among them, hole-transporting material...
Article
Full-text available
Dye‐sensitized solar cells (DSSCs) have become a strong reality in the field of hybrid photovoltaics. Their ability to operate in diffused light conditions and the possibility of fabrication of modules bearing different colors make these cells attractive for different applications, for example, wearable electronics, building integration, etc. This...
Article
A series of methoxylated imidazo[1,5-a]pyridines is presented and their optical and electrochemical properties investigated and interpreted on the basis of density functional theory calculations. The photophysical properties are discussed in relation to the chemical structure. The key role of the 1,3 substitutions on the imidazo[1,5-a]pyridine nucl...
Article
Full-text available
Since the introduction of Perovskite Solar Cells, their photovoltaic efficiencies have grown impressively, reaching over 25%. Besides the exceptional efficiencies, those solar cells need to be improved to overcome some concerns, such as their intrinsic instability when exposed to humidity. In this respect, the development of new and stable Hole Tra...
Article
Full-text available
The commercialization of perovskite solar cells (PSCs) has seen an important limitation in the instability that afflicts the hole-transporting layer (HTL), namely, spiro-OMeTAD, used in high-efficiency devices. The latter is, in turn, relatively expensive, undermining the sustainability of the device. Its replacement with polymeric scaffolds, such...
Article
Full-text available
Most photovoltaic (PV) technologies are opaque to maximize visible light absorption. However, see-through solar cells open additional perspectives for PV integration. Looking beyond maximizing visible light harvesting, this work considers the human eye photopic response to optimize a selective near-infrared sensitizer based on a polymethine cyanine...
Article
text. Aqueous dye‐sensitized solar cells are emerging as a promising alternative to enhance both the lifetime and environmental friendliness of traditional DSSCs. In this article, we report a cobalt‐based, jellified (with xanthan gum) aqueous electrolyte, leading to a valuable efficiency exceeding 4% (VOC = 847 mV, JSC = 6.73 mA cm–2, FF = 74%). De...
Article
A municipal solid waste incinerator (MSWI) was installed in a peripheral area of the city of Turin. In this study, we evaluated the contribution of this plant to the massive concentration of PM10, to its chemical composition and to the distribution of the lead isotopes during the start-up phase.We assessed the inorganic composition of PM10 collecte...
Article
Full-text available
Long-term stability of perovskite solar cells (PSCs) is one of the main issues to be solved for forthcoming commercialization of this technology. In this work, thermosetting polyurethane (PU)-based resins are proposed as effective encapsulants for perovskite solar cells to prevent degradation caused by both moisture and oxygen. Application consists...
Article
Three-dimensional printing (3DP) is considered among the key-technologies for the next industrial revolution, with considerable effects on production processes, economy, and society. In this context, the most relevant part of the market consists of polymeric 3D printing. The 3D printable liquids are composed of various components, among them dyes a...
Article
The Cover Feature shows a modern building powered by aqueous solar cells, placed both indoors and outdoors. Transparency, colors, and safety: new ingredients for hybrid photovoltaics. The cover is designed by Barth van Rossum. More information can be found in the Full Paper by L. Fagiolari et al.
Article
Full-text available
Metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) are two innovative classes of porous coordination polymers. MOFs are three-dimensional materials made up of secondary building blocks comprised of metal ions/clusters and organic ligands whereas COFs are 2D or 3D highly porous organic solids made up by light elements (i.e., H, B...
Article
Whereas the commercialization of dye-sensitized solar cells (DSSCs) is finally proceeding taking advantage of their low cost and tunable optical features, such as colour and transparency for both indoor and building-integrated applications, the corresponding aqueous counterpart is still at its infancy. As the TiO2 electrode is a fundamental compone...
Article
50 days' free access to this article. Anyone clicking on this link before November 14, 2020 will be taken directly to the final version of your article on ScienceDirect, which they are welcome to read or download. No sign up, registration or fees are required. https://authors.elsevier.com/a/1bofdWhQSSHOz Proteins are essential constituents of liv...
Article
Full-text available
The investigation of innovative electrolytes based on nontoxic and nonflammable solvents is an up-to-date, intriguing challenge to push forward the environmental sustainability of dye-sensitized solar cells (DSSCs). Water is one of the best choices, thus 100% aqueous electrolytes are proposed in this work, which are gelled with xanthan gum. This we...
Article
Full-text available
Dye-sensitized solar cells (DSSCs), as emerging photovoltaic technology, have been thoroughly and extensively investigated in the last three decades. Since their first appearance in 1991, DSSCs have gained increasing attention and have been classified as feasible alternatives to conventional photovoltaic devices due to their numerous advantages, su...
Article
Mucin-type glycoproteins are the principal components of mucus which cover all the mucosal surfaces of the human body. The mucus and mucins are essential mediators of the innate immune system, however in the last decades mucins have been identified even as an important class of cancer biomarkers. Luminogenic materials with fluorescence turn-on beha...
Article
Full-text available
A green, efficient and stable solar cell based only on water and safe and cheap elements of the periodic table is proposed in this work, finally consolidating (also from a sustainability viewpoint) the concept of “artificial photosynthesis” studied for decades by the scientific community. The concept of dye-sensitized solar cells is re-proposed her...
Chapter
Full-text available
An efficient waste management for emerging photovoltaic (PV) technologies is not mature yet. The problematic aspects along with the possible failure’s identifica-tion have a pivotal role in modelling the future end-of-life management strategies. The identification of substances of concern (e.g. high cost, low availability, and high toxicity) and va...
Conference Paper
We report here femtosecond transient absorption studies of a novel cyanine derivative near-IR absorbing dye incorporated in transparent solar cell devices of record efficiency, revealing dye-aggregation as the main injection yield limiting factor.
Article
Full-text available
The title compound bis(2-phenylpyridine-C,N’)-bis(acetonitrile)iridium(III)hexafluorophosphate, a six-coordinate iridium(III) complex, crystallizes in the P-1 space group. Iridium is in a distorted octahedral (n = 6) coordination with the N,C’ atoms of two phenylpyridine and the N atoms of two acetonitrile ligands. The peculiarity of this structure...
Article
A series of halogenated imidazo[1,5-a]pyridines was prepared and their structural and optical properties investigated. The products were characterized by spectroscopic techniques and their optical properties discussed in relation to their chemical structure. We were able to triplicate the luminescence quantum yields (φ) in solution for three differ...
Article
Increasing the photocurrent is one of the main objectives of the current research on aqueous photovoltaic cells, the emerging green, alternative technology in solar energy conversion devices. In such a scenario, this work deals with the thorough understanding of the electrochemical and photoelectrochemical effects of the TiCl 4 treatment onto TiO 2...
Article
Full-text available
We report the synthesis of a novel squaraine dye (VG21-C12) and investigate its behavior as p-type sensitizer for p-type Dye-Sensitized Solar Cells. The results are compared with O4-C12, a well-known sensitizer for p-DSC, and a sodium hydroxide pretreatment is described as an effective approach to reduce the dye/holes recombination. Various variabl...
Article
Bovine Serum Albumin (BSA)–squaraine supramolecular adducts with aggregation‐induced emission (AIE) properties were prepared and characterized by spectroscopic methods. While squaraine dyes showed very low fluorescence quantum yield in water, a great enhancement in the fluorescence of the aggregated BSA adducts was achieved due to the abnormal aggr...
Article
The new Ce(III) based metal-organic framework Ce2(NDC)3(DMF)2, containing the simple ditopic linker napthalenedicarboxylate (NDC²⁻), has been synthesized under solvothermal reaction conditions with high purity and yield. Its crystal structure was determined with single-crystal X-ray diffraction (SC-XRD) techniques and further confirmed by Ce K-edge...
Article
Photonic crystal enhanced fluorescence biosensors have been proposed as a novel immunodiagnostic tool, due to the increased fluorescence excitation rates and angular redistribution of the emission. Among these, purely dielectric one-dimensional photonic crystals (1DPC) sustaining Bloch surface waves (BSW) at their truncation edge, have recently att...
Article
The new heteroleptic Cu(I) complex [Cu(2,2′-dimethoxy-6,6′-bipirydine)(POP)]PF6 (POP = bis(2-(diphenylphosphino)phenyl)ether) showed enhanced thermal- and photo-stability, photoluminescence, and ionic conductivity features in thin films compared to those of the archetypal non-substituted complex [Cu(6,6′-bipirydine)(POP)]PF6. This led to enhanced l...
Article
An electro-activated glassy carbon electrode (aGCE) was tested as sensor for the detection of acetaminophen (APAP) in surface water samples. The best measurement conditions for the determination of APAP by Differential Pulse Voltammetry (DPV), assisted by the aGCE, were optimised by means of a Design of Experiment approach. The analytical performan...
Article
Full-text available
Screen-printed NiO electrodes were sensitized with 11 different dyes and the respective electrochemical properties were analyzed in a three-electrode cell with the techniques of cyclic voltammetry and electrochemical impedance spectroscopy. The dye sensitizers of NiO were organic molecules of different types (e.g., squaraines, coumarins, and deriva...
Article
A series of new dyes based on the fluorescent imidazo[1,5-a]pyridine moiety has been designed and synthesized specifically for fluorescence cell imaging application. The obtained molecules contain a carboxylic functional group inserted to increase the water solubility and to provide an effective conjugation site. Their structural and optical proper...
Poster
Covalent organic frameworks (COFs) are a class of crystalline organic porous materials. While COFs are generally studied for gas storage and catalysis, their optoelectronic and energy storage properties have been explored only recently. For example, thiophene-based COFs, synthesized starting from highly conjugated linkers, have shown semiconducting...
Article
If opportunely developed and optimized, aqueous dye-sensitized solar cells can be considered a truly low impact photovoltaic device, with no toxic components. Here we report the use of design of experiments as a useful chemometric technique for the concurrent investigation of a series of experimental factors that directly influence the proper opera...
Article
The photochemistry of N-acetyl-para-aminophenol (acetaminophen, APAP) is here investigated by using differential pulse voltammetry (DPV) analysis to monitor APAP photodegradation upon steady-state irradiation. The purpose of this work is to assess the applicability of DPV to monitor the photochemical behaviour of xenobiotics, along with the develop...
Article
Full-text available
Squaraines are full-organic dyes employed as sensitizers in p-type dye-sensitized solar cells (p-DSSC). Their absorption spectrum shows a wide tunability that ranges from visible to NIR. Sensitization in the NIR region is crucial for exploiting a particularly intense portion of the solar spectrum. In this work three squaraines will be presented and...
Chapter
Crystalline nanoporous metal–organic frameworks (MOFs), built from metal ions and organic linkers, offer a vast potential for the design of porous materials with molecularly selective interfaces, novel physical properties, enormous surface areas, and a diverse array of functionality. Their first reports were focused toward the discovery of unknown...