Crucial roles of graphene oxide in preparing alginate/nanofibrillated cellulose double network composites hydrogels.

In this study, a novel strategy to prepare sodium alginate (SA)/nano fibrillated cellulose (NFC) double network (DN) hydrogel beads with the aid of graphene oxide (GO) was developed. In comparison with the multi-step freezing-thawing method, this study employs a facile one-step freeze drying method with the presence of GO sheets. The crucial roles of GO were highlighted as an efficient nucleating agent of NFC and a reinforcer for the hydrogel.

Broadband ultraviolet to near infrared conversion in Eu,Nd co-doped SrAlO.

In this study, we investigated the quantum cutting (QC) mechanism in Eu-Nd-co-doped SrAlO microcrystals by fluorescence spectroscopy and decay lifetime analysis. In this material, the near-infrared (NIR) emissions of Nd in the range of 800-1200 nm were enhanced under the excitation of the Eu:4f → 4f5d transition radiation. The lifetime of the 5d level of Eu decreased with the increase in the Nd concentration.

Broadband near-infrared quantum cutting by Ce-Yb codoped YAG transparent glass ceramics for silicon solar cells.

Ce-Yb co-doped transparent glass ceramics containing YAG nanocrystals were prepared by a conventional melt-quenching method. Broadband near infrared quantum cutting was achieved in the glass ceramics and proved to be a cooperative down-conversion process. Under 460 nm excitation, F to 5d electronic transitions occurred in Ce and transferred their energy to two neighboring Yb.

Poly[tetra-aqua-bis-(μ(4)-thio-phene-2,5-dicarboxyl-ato)(μ(2)-thio-phene-2,5-dicarboxyl-ato)dieuropium(III)].

The three-dimensional coordination polymer, [Eu(2)(C(6)H(2)O(4)S)(3)(H(2)O)(4)](n), has been synthesized under hydro-thermal conditions. The asymmetric unit comprises one Eu(3+) cation, two aqua ligands and one and a half thiophene-2,5-dicarboxylate anions (the half-anion being completed by a twofold rotation axis). The Eu(3+) cation is eight-coordinated in a distorted dodeca-hedral geometry.

Adsolubilization of dihydroxybenzenes into CTAB layers on silica particles.

The adsolubilization of dihydroxybenzenes (catechol and hydroquinone) into cetyltrimethylammonium bromide (CTAB) layers on silica particles have been investigated by dye method and UV spectrum. It is found that the adsolubilization amount of catechol increases with increasing the concentration of CTAB, reaches a maximum value at the critical micelle concentration (CMC), and then decreases with further increment of CTAB concentration. For hydroquinone, different phenomenon is observed.