A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Bipyridine based metallogels : an unprecedented difference in photochemical and chemical reduction in the in situ nanoparticle formation (2017)

Tatikonda, Rajendhraprasad, Bertula, Kia, Nonappa, Hietala, Sami, Rissanen, Kari, Haukka, Matti. (2017). Bipyridine based metallogels : an unprecedented difference in photochemical and chemical reduction in the in situ nanoparticle formation. Dalton Transactions, 46(9), 2793-2802. https://doi.org/10.1039/C6DT04253H

JYU-tekijät tai -toimittajat

Tatikonda, Rajendhraprasad
Rissanen, Kari
Haukka, Matti

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Tatikonda, Rajendhraprasad; Bertula, Kia; Nonappa; Hietala, Sami; Rissanen, Kari; Haukka, Matti

Lehti tai sarja: Dalton Transactions

ISSN: 1477-9226

eISSN: 1477-9234

Julkaisuvuosi: 2017

Volyymi: 46

Lehden numero: 9

Artikkelin sivunumerot: 2793-2802

Kustantaja: Royal Society of Chemistry

Julkaisumaa: Britannia

Julkaisun kieli: englanti

DOI: https://doi.org/10.1039/C6DT04253H

Julkaisun avoin saatavuus: Ei avoin

Julkaisukanavan avoin saatavuus:

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/53578

Tiivistelmä

Metal co-ordination induced supramolecular gelation of low molecular weight organic ligands is a rapidly expanding area of research due to the potential in creating hierarchically self-assembled multi-stimuli responsive materials. In this context, structurally simple O-methylpyridine derivatives of 4,4′-dihydroxy-2,2′-bipyridine ligands are reported. Upon complexation with Ag(I) ions in aqueous dimethyl sulfoxide (DMSO) solutions the ligands spontaneously form metallosupramolecular gels at concentrations as low as 0.6 w/v%. The metal ions induce the self-assembly of three dimensional (3D) fibrillar networks followed by the spontaneous in situ reduction of the Ag-centers to silver nanoparticles (AgNPs) when exposed to daylight. Significant size and morphological differences of the AgNP's was observed between the standard chemical and photochemical reduction of the metallogels. The gelation ability, the nanoparticle formation and rheological properties were found to be depend on the ligand structure, while the strength of the gels is affected by the water content of the gels.

YSO-asiasanat: ligandit; nanohiukkaset

Vapaat asiasanat: metallogels; supramolecular gelation

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