The interaction between dodecyltrimethylammonium bromide (DTAB) and curcumin has been studied in pH 5.0 sodium phosphate buffer using absorption and fluorescence measurements. With increasing DTAB concentration (C(DTAB)) from 0 to 20 mM, the absorption peak of curcumin at 430 nm, corresponding to the conjugated structure of curcumin, first weakens gradually into a shoulder but increases back into one peak with much higher absorption intensity. On the contrary, as C(DTAB) increases, the initial small absorption shoulder of curcumin at 355 nm, corresponding to the feruloyl unit of curcumin, first increases gradually into a clear peak but decreases back into one shoulder until almost disappeared finally. By remaining at nearly the same wavelength, the fluorescence of curcumin first decreases at C(DTAB) lower than 5 mM and then increases gradually up to C(DTAB) = 10 mM, which is followed by sharp increases of fluorescence intensity with marked blue-shifts at higher C(DTAB). The values of anisotropy and microviscosity of curcumin obtained from the fluorescence polarization technique also showed pronounced changes at different surfactant concentrations. The interaction mechanisms of DTAB with curcumin have been presented at low, intermediate, and high surfactant concentrations, which is relating to interaction forces, surfactant aggregations, as well as structural alterations of curcumin.

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This study demonstrates that mangiferin can markedly ameliorate diabetes-associated cognitive decline in rats, which is done likely through suppressing methylglyoxal hyperactivity (promoting protein glycation, oxidative stress, and inflammation) mediated noxious effects.

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In the development of proton conductors, it is very important to increase the density of proton carriers to adjust proton conduction pathways. In this work, two novel isomeric hydrogen-bonded organic frameworks, [(HDATA) 2 (H 2 BPYBPA)-(H 2 O) 2 ] (UPC-H1 and UPC-H2), together with their dehydrated counterpart, [(HDATA) 2 (H 2 BPYBPA)] (UPC-H3), were successfully assembled from acidic H 4 BPYBPA and alkaline DATA. Single crystal X-ray diffraction analysis clearly reveals the threedimensional lattice water molecules-involved hydrogen-bonded networks for UPC-H1 and UPC-H2 and no lattice water moleculeinvolved hydrogen-bonded network for UPC-H3. Detailed structural analysis with the aid of water adsorption tests discloses their easy single-crystal-to-single-crystal (SCSC) transformation and good self-adaptability to water molecules through hydrogen-bonded reorganization under the help of electrostatic interactions. Owing to the lack of restriction from the lattice water molecules in UPC-H3, the adsorbed water molecules more easily reorganize hydrogen bonds to form smooth proton conduction pathways, endowing it good proton conductivity over a wide temperature range from 30 to 80 °C at 95% relative humidity (RH), with the highest value of 9.0 × 10 −2 S cm −1 at 80 °C and 99% RH, despite the lack of channels and permanent voids in its crystal structure.

An Sb/NPC composite with Sb nanoparticles uniformly dispersed in 1-D N-doped porous carbon exhibited enhanced cycle stability in LIBs and NIBs.

This study aimed to explore the effects of two siderophore-producing bacterial strains on iron absorption and plant growth of peanut in calcareous soil. Two siderophore-producing bacterial strains, namely, YZ29 and DZ13, isolated from the rhizosphere soil of peanut, were identified as Paenibacillus illinoisensis and Bacillus sp., respectively. In potted experiments, YZ29 and DZ13 enhanced root activity, chlorophyll and active iron content in leaves, total nitrogen, phosphorus and potassium accumulation of plants and increased the quality of peanut kernels and plant biomass over control. In the field trial, the inoculated treatments performed better than the controls, and the pod yields of the three treatments inoculated with YZ29, DZ13, and YZ29 + DZ13 (1:1) increased by 37.05%, 13.80% and 13.57%, respectively, compared with the control. Based on terminal restriction fragment length polymorphism analysis, YZ29 and DZ13 improved the bacterial community richness and species diversity of soil surrounding the peanut roots. Therefore, YZ29 and DZ13 can be used as candidate bacterial strains to relieve chlorosis of peanut and promote peanut growth. The present study is the first to explore the effect of siderophores produced by P. illinoisensis on iron absorption.

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