A novel tellurium-containing polymer micelle system is reported to be responsive to 100 μM H2O2 and can undergo a series of morphological changes. The polymer micelles also respond to 2 Gy gamma radiation, which is the exact dosage a patient receives per day for clinical radiation therapy.
The same consequences can be observed after selenium-tellurium interaction in less abundant selenocysteine-containing biomolecules, such as selenoprotein P, thioredoxin reductase (TrxR) and various GPx enzymes . Inhibition of these enzymes by interaction with Te compounds triggers a loss of antioxidant defence and widespread oxidative stress.
Heterotellurium-containing macrocycles towards degradable tellurium-functionalized polymers 1 Author links open overlay panel Jieni Hu a, Chuanhao Sun a, Siqi Li a, Yuan Yuan a, Yan Zhang a b Show more
Tellurium, a metalloid belonging to group 16 of the periodic table, displays very interesting physical and chemical properties and lately has attracted significant attention for its use in nanotechnology. ... for a novel tellurite reductase from the Antarctic bacterium Pseudomonas sp. strain BNF22 and used it to generate tellurium-containing ...
Tellurium was discovered in 1782 by Franz-Joseph Müller von Reichenstein in a mineral containing gold and tellurium. Martin Heinrich Klaproth named the new element in 1798 after the Latin word for "earth", tellus. Although several gold deposits contain tellurium minerals, the main commercial source for tellurium is as a by-product of copper ...
North America's only tellurium-focused exploration company, exploring high-grade holdings in Canada and US. Tellurium is essential for thin-film, cadmium telluride solar panels. Deer Horn Project: 17.5 square-kilometre mineral zone containing Au, Ag, Te, Cu, Mo, Bi, Zn; One of few significant tellurium discoveries outside of Asia.
Tellurium containing nanoparticles were designed and synthesized for the delivery of cisplatin based on coordination interaction. The tellurium containing nanomedicine could achieve better in vivo efficacy and reduce side effects, owing to the prolonged blood circulation. This kind of approach marked a new frontier
In Ettler et al. the antimony-tellurium mixing enthalpy (− 9.6 kJ/mol) at 935 K was determined by calorimetric method, in Singh et al. the ... Such studies of systems containing chalcogenes and chalcogenides are difficult because of high boiling temperatures of solutions, the difficulty to determine the concentration of components in the ...
Sulfur-containing compounds, particularly derivatives of thiophene, are well studied for organic optoelectronic applications. Incorporating selenium or tellurium in place of sulfur imparts ...
Introduction. Tellurium, a rare element, is widely used in metallurgy, chemical industry, electronics, aerospace, medical and other fields ().As an additive in metallurgy, tellurium can improve the cutting properties of steel and copper, and enhance the hardness and wear resistance of "baffle alloys" (); CdTe thin-film solar cells are a kind of solar cells with low price …
The hydrometallurgical process was used to treat 600 g of copper telluride slag, producing 2.56 L of tellurium-containing leachate, 3.26 L of acidic waste solution, and 160 g of tailing slag. This led to a 78.3 g yield of the tellurium dioxide product with a tellurium recovery of 83.15%. According to formula (5), the waste liquid ratio is 47.25 ...
The primary use of tellurium is in alloys, foremost in steel and copper to improve machinability. Tellurium is used as a basic ingredient in blasting caps, and is added to cast iron for chill control. It is used in vulcanizing rubber and in …
Herein, we report a selenium- and tellurium-containing block copolymer that can be stepwise oxidized by both chemical methods and electrochemical methods. Differences in sensitivity to the oxidation of selenium and tellurium were employed. By tuning the concentration of the oxidant and oxidation periods, self-assembly behaviors of the copolymer ...
Element Tellurium (Te), Group 16, Atomic Number 52, p-block, Mass 127.60. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
Abstract The chemistry of Tellurium containing macrocycles has received great attraction and developed rapidly. Recently inorganic chemists are fascinated by ligands containing macrocycles having tellurium as soft donor and N and O as hard donor atoms. The tellurium atom is more electropositive than carbon due to its large size that resulted in …
A method for preparing high-purity tellurium based on viscous distillation and gas-phase separation was developed. By adjusting the condenser structure and condensing temperature to achieve viscous distillation, the dominant condensation zone for tellurium was controlled; hence, poorly volatile substances remained in the crucible, while selenium was …
Tellurium likewise possesses the power of hardening other metals. This hardening power is very marked in the alloys with lead, and Roberts-Austen has found that it diminishes the tenacity of gold and copper. So far as we know, no ternary alloys containing tellurium, and corresponding to Britannia or Babbitt metals, have been prepared.
In contrast, tellurium-containing compounds (9, 10, 13, 16, 17 and 20) exhibited a significant cytotoxic effect, whereby the tellurium-containing Passerini products were more toxic than their corresponding Ugi analogues. This may attributed to the particular nature of the Passerini products, that is, structures based on an α-acyloxy amide.
1. Introduction. Tellurium belongs to the chalcogen family together with oxygen, sulfur, selenium, and polonium, which was first discovered in 1782 in an Au–Te containing mineral (Fan et al., 2013).Te is widely used in a variety of industrial applications as it has excellent properties, characteristic of both metals and non-metals.
Tellurium (Te), as a rare element, has gained increasing attention to its properties and value (Chivers and Laitinen, 2015).Especially in the 21st century, due to the numerous intriguing and unique properties of tellurium, it was known as the "vitamin of modern industry, national defense and cutting-edge technology"(Shao et al., 2020).The emerging importance of …
The low solubility of tellurophene polymers may be one reason why poor mixing of the donor and acceptor materials occurs. We also believe that larger domains occur for tellurium-containing polymers because strong Te–Te interactions facilitate aggregation. ... Other tellurium-containing heterocyclic small molecules that exhibit luminescence ...
It is named from the Latin tellus for "earth". Tellurium can be alloyed with some metals to increase their machinability and is a basic ingredient in the manufacture of blasting caps. Elemental tellurium is occasionally found in nature but is more often recovered from various gold ores, all containing (AuTe_2).
Tellurium in these soils in most likely subject to a dynamic cycle of oxidation and dissolution followed by reduction and precipitation, all controlled by microbial activity.
In the primary smelting experiments, most of tellurium was vaporized into flue dusts, and the distribution coefficient between copper matte and slag increased with increasing oxygen pressure, i.e. increasing matte grade. ... Duplicate experiments were conducted for the K 2 O-free and 3 wt% K 2 O-containing samples to ensure the reliability and ...
TePhe, a tellurium-containing phenylalanine mimic, allows monitoring of protein synthesis in vivo with mass cytometry Proc Natl Acad Sci U S A. 2019 Apr 23;116(17):8155-8160. doi: 10.1073/pnas.1821151116. Epub 2019 Apr 10. Authors Jay Bassan 1 ...
Then we studied the application of tellurium-containing polymers in drug delivery, focusing on the delivery of platinum drugs. For example, polymers with tellurium in the main chain can simultaneously deliver Cisplatin and indocyanine green to achieve a combination of cancer chemotherapy and photodynamic therapy, while side-chain tellurium ...
Element Tellurium (Te), Group 16, Atomic Number 52, p-block, Mass 127.60. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. ... He was having particular problems with the analysis of an unusual gold containing ore. Eventually, he managed to isolate a new metal from the ore and he called it aurum ...
The most common use of tellurium today is in specialized alloys. An alloy is made by melting and mixing two or more metals. The mixture has properties different from those of the individual metals. About three-quarters of all …
Significant progresses have been made in tellurium-containing polymers over the past decades. Just like other heteroatom-containing polymers, tellurium-containing polymers exhibit several unique properties and promising applications. However, unlike elements such as boron, silicon, sulfur and so on, tellurium in polymers remains a fresh ...
The greatest drawback of using tellurium containing cata- lysts is its volatility in its lower oxidation state (Te4~) which forms under the redox conditions of the catalytic operation. Te4~ compounds are much more volatile than Te6 + compounds, and unless immediately reoxidized to the 6 + oxidation state, tellurium will volatilize and will be ...
