Crystal symmetry modification enables high-ranged in-plane thermoelectric performance in n-type SnSe crystals.

SnSe crystal has witnessed significant advancements as a promising thermoelectric material over the past decade. Its in-plane direction shows robust mechanical strength for practical thermoelectric applications. Herein, we optimize the in-plane thermoelectric performance of n-type SnSe by crystal symmetry modification.

Recent Advances in Mechanochromism of Metal-Organic Compounds.

Smart luminescent materials, which can respond to the changing of external environment (light, electricity, force, temperature, etc.), have always been one of the research hotspots. Mechanochromism refers to the materials whose emission color or intensity can be altered under the stimulation of external mechanical force.

Contrasting Thermoelectric Transport Behaviors of -Type PbS Caused by Doping Alkali Metals (Li and Na).

PbS is a latent substitute of PbTe thermoelectric materials, which is on account of its superiority in low cost and earth abundance. Here, the thermoelectric transport properties of -type PbS by doping alkali metals (Na and Li) are investigated and it is verified that Li is a more effective dopant than Na. By introducing Li, the electrical and thermal transport properties were optimized collectively.

Investigation on carrier mobility when comparing nanostructures and bands manipulation.

Nanostructuring as an effective strategy to reduce thermal conductivity was well developed to enhance thermoelectric performance in the past decades. However, electrical transport properties are always suppressed with nanostructures incorporated into a matrix, which finally causes limited increase of thermoelectric performance. To pursue further enhancement in thermoelectric materials beyond nanostructures, the approach of manipulating electronic band structures was revisited to optimize carrier transports by balancing the competitive relationship between carrier mobility and effective mass.

[Preparation and Characterization of Quinone Functional Polymer Biocarrier (PET-AQS) for Biodenitrification Catalysis].

Anthraquinone sodium sulfonate (AQS) was immobilized on polyethylene terephthalate (PET) by chemical synthesis, forming quinone functional polymer biocarrier (PET-AQS), and its characteristics in biodenitrification catalysis were analyzed. Quinone group was demonstrated to be successfully immobilized on the surface of the polymer and the concentration of immobilized quinone was 0.140 6 mmol x g(-1) by Attenuated Total Reflectance Spectrometry (ATR-IR) and Energy Dispersive Spectrometry (EDS).