Natural bacterial and plant biomolecules bearing α-d-glucuronic acid residues

Vinnitskiy, Dmitry Z.; Ustyuzhanina, Nadezhda E.; Nifantiev, Nikolay E.

doi:10.1007/s11172-015-1010-7

Cited by 5 publications

(2 citation statements)

References 337 publications

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“…We have selected glucuronic acid ( GLUA , Figure ) as a specifically designed coadsorbent because its pyranose scaffold should efficiently promote strong coadsorbent–dye intermolecular hydrogen bonds. Though more sophisticated systems could be envisaged, GLUA has been preferred for its simple structure, low cost, wide availability from natural sources, − and the presence of a carboxylic functionality able to anchor the molecule on the TiO 2 surface.…”

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confidence: 99%

Dye-Sensitized Photocatalytic Hydrogen Generation: Efficiency Enhancement by Organic Photosensitizer–Coadsorbent Intermolecular Interaction

et al. 2017

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Dye-sensitized photocatalytic H2 generation has been investigated using a metal-free phenothiazine-based donor–acceptor sensitizer (PTZ-GLU) in combination with coadsorbents. The coadsorption of the PTZ-GLU dye, functionalized with a glucose end-group, in combination with a glucose-based coadsorbent, afforded improved photocatalytic activity compared to the absence of coadsorbents, to the use of a conventional (chenodeoxycholic acid) coadsorbent, or by replacing the dye glucose functionality with an alkyl chain. The results suggest the strategic role of directional intermolecular dye–coadsorbent interactions on the semiconductor surface, as confirmed by first principles computational modeling, which likely suppressed detrimental recombination processes.

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Dye-Sensitized Photocatalytic Hydrogen Generation: Efficiency Enhancement by Organic Photosensitizer–Coadsorbent Intermolecular Interaction

et al. 2017

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“…We have selected glucuronic acid (GLUA), an hydrophilic pyranose-based scaffold, as a glucose-based coadsorbent, and the commonly used chenodeoxycholic acid (CDCA), an hydrophobic coadsorbent well known in DSSCs applications, as a conventional reference (Ismail et al 2018;Lee et al 2013). The former has been chosen for its rigid nature, the presence of hydroxyl terminal groups which are able to generate directional hydrogen bonds with the glucose terminal of the dye, its low cost, ready availability from natural sources, and finally for the presence of a carboxyl group needed to anchor the molecular spacer to the SC surface (Kaur et al 2014;Melville 1954;Vinnitskiy et al 2015). The hydrogen production trend of PTZ-GLU has been studied with or without coadsorbents, both CDCA and GLUA, and these results have been compared with the PTZ2 (that is the alkyl derivative not containing the glucose unit and thus not able to afford hydrogen bonds), used as a benchmark in the same conditions (Fig.…”

Section: Supramolecular Assemblymentioning

confidence: 99%

Dye-sensitized photocatalytic and photoelectrochemical hydrogen production through water splitting

Decavoli

Boldrini

Manfredi

et al. 2019

Rend. Fis. Acc. Lincei

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This review points out some of our recent advancements in dye-sensitized photocatalytic and photoelectrochemical hydrogen production. The dye sensitization of a semiconductor (SC) surface plays a central role. The dye has the task to improve the light harvesting of the system and guarantees a fast charge transfer to the SC, while avoiding charge recombination reactions that might reduce its efficiency. The introduction of different features and exploitation of molecular designs led to the development of twelve new dyes with a "push-pull" di-branched structure. The design of the molecular structure and geometry improves light harvesting, stability under long-term irradiation, and surface properties. The dyes have been investigated in a photocatalytic device, and then the most representative molecules have been studied also in photoelectrochemical cells (PEC), in the presence either of a sacrificial electron donor (SED), or of a water oxidation catalyst (WOC). The planar structure of the carbazole-based dye enhanced the photocatalytic hydrogen production activity almost tenfold compared to the phenothiazine derivative characterized by a butterfly-like structure; the latter was endowed with a better performance in the photoelectrochemical hydrogen production.

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Rational design of complex molecular structures starting from readily available precursors

Orlov

2016

Russ Chem Bull

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Natural bacterial and plant biomolecules bearing α-d-glucuronic acid residues

Cited by 5 publications

References 337 publications

Dye-Sensitized Photocatalytic Hydrogen Generation: Efficiency Enhancement by Organic Photosensitizer–Coadsorbent Intermolecular Interaction

Dye-Sensitized Photocatalytic Hydrogen Generation: Efficiency Enhancement by Organic Photosensitizer–Coadsorbent Intermolecular Interaction

Dye-sensitized photocatalytic and photoelectrochemical hydrogen production through water splitting

Rational design of complex molecular structures starting from readily available precursors

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