The development of wearable electronics that can monitor human physiological information demands specially structured materials with excellent stretchability and electrical conductivity. In this study, a new stretchable conductive polypyrrole/polyurethane (PPy/PU) elastomer was designed prepared by surface diffusion in situ polymerization PPy inside on porous PU substrates. structures allowed the formation netlike microcracks under stretching. microcrack make possible reversible changes...

A hyper-crosslinked β-cyclodextrin porous polymer (BnCD-HCPP) was designed and synthesized facilely by benzylation subsequent crosslinking for efficient adsorption catalysis.

Soluble porous coordination polymers from mechanochemical synthesis are presented through a polymerization between highly contorted, rigid tetraphenol and broad variety of transition metal ions. These can be easily cast as metal-containing films or freestanding membranes. Importantly, as-made active stable in the aerobic oxidation allylic CH bonds.

Energetic effects between halogen bonds and anion-π or lone pair-π interactions have been investigated by means of ab initio MP2 calculations. 1,4-diiodo-perfluorobenzene, a very effective building block for crystal engineering based on bonding, is selected in this work both as electron-deficient π aromatic ring bond donor. Additive diminutive are observed when anion-π/lone coexist the same complex, which can be ascribed to direction charge transfer two interactions. These analyzed detail...

According to our survey of the Cambridge Structural Database (CSD), a great number crystal structures, in which halogen bonds and aromatic stacking interactions are present play an important role packing, have been extracted. In this work, ab initio calculations at MP2 level theory were performed investigate mutual influence between π–π interactions. Different energetic effects observed studied complexes where two kinds noncovalent coexist, can be rationalized by direction charge transfer...

The development of the wearable sensors for healthcare related applications requires mechanically stretchable, electrically conductive and biologically compatible elastomers. We have fabricated a polyurethane (PU) elastomer by in situ polymerization with surface hydroxyl-modified Multi-Walled Carbon Nanotubes (MWNTs). FT-IR Raman spectroscopy results indicated that successful incorporation MWNTs into PU macromolecules. good dispersion PU/MWNT elastomers was confirmed transmission electron...

Previously, we confirmed that C-C chemokine receptor 7 (CCR7) promotes cell proliferation via the extracellular signal-regulated kinase (ERK) pathway, but its role in apoptosis of non-small lung cancer (NSCLC) lines remains unknown. A549 and H460 cells NSCLC were used to examine effect CCL21/CCR7 on using flow cytometry. The results showed activation CCR7 by specific ligand, exogenous ligand 21 (CCL21), was associated with a significant decline percent apoptosis. Western blot real-time PCR...

A class of novel hyper-crosslinked microporous polymers, based on green and renewable carbohydrates, was synthesized for carbon capture storage with high CO₂/N₂ selectivity by hydrogen bonding dipole–quadrupole interactions.

We report the synthesis, X-ray crystal structures and photophysics of new donor–acceptor oligomers fluorene (F) dibenzothiophene-S,S-dioxide (S) with constrained dihedral angles in backbone. The materials display bright deep-blue fluorescence evidence is presented for a planarised intramolecular charge-transfer (PICT) state F–S systems.

Abstract The interplay between halogen bonds and cation–π interactions is investigated by ab initio calculations at the MP2 level of theory. Different energetic effects are observed in studied complexes which coexist, can be ascribed to direction charge transfer for two interactions. These analyzed detail terms structural, energetic, charge‐transfer properties complexes. In addition, quantum theory atoms molecules employed characterize examine their enhancement attenuation variations...

An amphiphilic sun-shaped copolymer was successfully prepared by esterification of carboxylic acid terminated PEO with the pendent hydroxyl groups high molecular weight (Mn = 28 000) cyclic PCL. The structure copolyester originally resulted from polymerization initiation a tin dialkoxide and ultimately stabilized intramolecular cross-linking few unsaturated groups.

C-C chemokine receptor 7 (CCR7) contributes to the survival of certain cancer cell lines, but its role in proliferation human non-small lung (NSCLC) cells remains vague. Proliferation assays performed on A549 and H460 NSCLC using Cell Counting Kit-8 indicated that activation CCR7 by specific ligand, exogenous ligand 21 (CCL21), was associated with a significant linear increase duration exposure CCL21. The CCL21/CCR7 interaction significantly increased fraction G(2)/M phase cycle as measured...

Chemotherapy has been considered as an effective treatment for malignant glioma; however, it becomes increasingly ineffective with tumor progression. Epithelial‐to‐mesenchymal transition ( EMT ) is a process whereby cells acquire morphologic and molecular alterations that facilitate metastasis Emerging evidence associates chemoresistance the acquisition of in cancer. However, not clear whether this phenomenon involved glioma. We used previously established human glioma cell lines SWOZ1 ,...

Pancreatic cancer rapidly acquires resistance to chemotherapy resulting in its being difficult treat. Gemcitabine is the current clinical strategy; however, owing gemcitabine resistance, it only able prolong life of patients with pancreatic for a limited number months. Understanding underlying molecular mechanisms and selecting suitable combination agents treatment required. Astaxanthin (ASX) resensitize gemcitabine‑resistant human cells (GR‑HPCCs) gemcitabine. ASX was identified upregulate...

Several cyclodextrin (CD)-based hyper-crosslinked porous polymers (HCPPs) were designed and synthesized for selective CO₂ adsorption storage. A feasible way to tailor the porosity of materials was also established.

In recent years, several specific imidazolium-based ionic liquids with halogen substituents on the imidazole ring as well alkyl chains have been reported. this work, noncovalent interactions in four halogenated liquids, i.e. 2-bromo-/iodo- and 4,5-dibromo-/diiodo-1,3-dimethylimidazolium trifluoromethanesulfonates, were systematically investigated using density functional theory calculations. The structural energetic properties of ion pairs for such fully examined compared non-halogenated...

Transition metal-containing ionic liquids (TM-ILs) have attracted a great deal of attention in recent years, due to their unique physical and chemical properties. In this work, several representative TM-ILs, such as the cations consisting silver(I) center coordinated by two n-alkylimidazole ligands ([(C(n)(im))Ag(mim)](+)) anions involving mercury(II) (HgCl3(-)), zinc(II) (ZnCl3(-)), rhenium(VII) (ReO4(-)), were investigated using density functional theory calculations. First, structural...

Abstract A corrosion protection coating from polyimide/polyaniline (PI/PAn) blend was prepared by solution blending and the anti‐corrosion property of this studied with electrochemical impedance spectroscopy technique. The results show that PAn can react PI to form chemical bonds between these two polymers keep as a miscible system. increases growth in component an excellent effect emerges when content reaches 10–15%. reason why improve is PI/PAn dense non‐porous polymer film would prevent...

With the phasing out of lead-bearing solders, electrically conductive adhesives (ECAs) have been identified as an environmentally friendly alternative to tin/lead (Sn/Pb) solders in electronics packaging applications. Compared Sn/Pb adhesive technology offers numerous advantages. However, a new technology, still has many concerns and limitations. In order for achieve universal acceptance, ECAs with better properties must be developed. The purpose this study is increase conductivity by using...

Abstract Objectives To discuss Doppler ultrasonographic and clinical features of middle aortic syndrome (MAS). Materials methods images dates 11 patients with MAS confirmed by angiography were retrospectively analyzed from January 2004 to September 2016. Results The median age was 10 years (1‐39 years). Ten presented hypertension, only 2 cases symptomatic intermittent claudication, 1 case abdominal pain. included: (a) Gray‐scale image showed significant segmental narrowing the aorta in 9...