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Aerogel could become the key to future terahertz technologies

Aerogel could become the key to future terahertz technologies
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Qilun Zhang , Thor Balkhed , Shangzhi Chen , Chaoyang Kuang , Laboratory Of Organic Electronics , Advanced Science , Organic Electronics , Switchable Broadband Terahertz Absorbers Based , Conducting Polymer , Cellulose Aerogels ,

"Biofouling-Resistant Electroactive Polymer Composites for Protein-Trig" by Paul J. Molino, Richard E. Wetherill et al.

Polycationic polymers necessarily contain counterions to maintain the overall charged balance. Upon treatment of polypyrrole (PPy) films with thiol-terminated poly(ethylene glycol) (PEG), the films undergo efficient surface derivatization that reduces a portion of the film, freeing up some of the "dopant"counterions, while forming a brush-like layer. Quartz crystal microbalance (QCM) measurements show that the PEG brushes resist the adhesion of protein (fetal bovine serum (FBS)) as compared to unmodified PPy. When the dopant is polymeric dextran sulfonate, no change in the QCM resonance frequency is observed. However, when the dopant is dodecylbenzene sulfonic acid (DBSA), exposure of the film to protein causes an increase in the resonance frequency, indicating a loss of mass. X-ray photoelectron spectroscopy (XPS) and liquid chromatography-mass spectroscopy (LCMS) measurements demonstrate that the protein triggers the release of the dopant from the composite. Treatment of DB ....

Conducting Polymer , Dodecylbenzene Sulfonic Acid , Drug Release , Poly Ethylene Glycol ,

"Conducting-polymer nanocomposites as synergistic supports that acceler" by Mohammed Alsultan, Anwer M. Ameen et al.

This work describes how conducting polymer nanocomposites can be employed as synergistic supports that significantly accelerate the rate of electro-catalysis. The nanocomposite PEDOT/nano-Co3 O4 /rGO is discussed as an example in this respect, which is specific for photo electro-catalytic oxygen (O2) generation from water using light (PEDOT = poly (3,4-ethylenedioxythiophene); rGO = reduced graphene oxide). We show that the conducting polymer PEDOT and the conductive additive rGO may be used to notably amplify the rate of O2-generation from water by the nano catalyst, Co3 O4. A composite film containing the precise molar ratio 7.18 (C; PEDOT):1 (Co):5.18 (C; rGO) exhibited high photocatalytic activity (pH 12) for the oxygen evolution reaction (OER) at 0.80 V (vs. Ag/AgCl), with a current density of 1000 ± 50 µA/cm2 (including a photocurrent of 500 µA/cm2), achieved after >42 h of operation under illumination with a light of intensity 0.25 sun. By comparison, the best industrial c ....

Conducting Polymer , Reduced Graphene Oxide , Water Splitting ,

"A cytocompatible conductive polydopamine towards electrochromic energy" by Meihua Zhu, Xiaoteng Jia et al.

Abstract
Polydopamine (PDA), a quinone containing bioinspired material, is attractive for environmental and human-friendly energy storage systems because of its fast and reversible proton-involved redox activity. Herein, we describe a multifunctional porous double-network polymer based on tetraaniline and PDA. This material can take advantage of the redox activity and wettability from PDA, as well as the electronic conductivity and electrochromic capability provided by tetraaniline. It does not show cytotoxic effects as evidenced by conventional cell viability and imaging assays. An electrochromic battery-type device based on this material delivers a considerable capacity of 160 mAh g together with a high coloring efficiency of 270 cm /C and a large optical contrast of up to 37% at 700 nm. The device is capable of storing energy while indicating the energy status visually. This multifunctional porous conductive PDA material is promising for versatile energy storage applicatio ....

Conducting Polymer , Ouble Network , Energy Storage , நடத்துதல் பாலிமர் ,