Search results

• Poly(hydridocarbyne)
  <tr><td>[[Molecular mass]]</td><td>200,000 to 100 million Daltons</td></tr> <tr><td>[[Simplified molecular input line entry specification|SMILES]]</td><td>???????</td></tr>
  4 KB (523 words) - 10:10, 20 September 2010
• Thermoplastic elastomer
  ...polystyrene blocks in the main picture is 102,000; the inset picture has a molecular weight of 91,000, producing slightly smaller domains. The spacing between d
  11 KB (1,609 words) - 10:10, 20 September 2010
• Weather testing of polymers
  ...the reflectance ([[gloss]]), as well as forming a protective coating. The structure of paint consists of [[pigments]] in a matrix of [[resin]]. ...ww.univ-bpclermont.fr/LABOS/lpmm],[http://www.cnep-ubp.com] specialists of molecular photochemistry, to provoke in accelerated controlled conditions the same ch
  12 KB (1,780 words) - 10:10, 20 September 2010
• Styrene-butadiene
  | ImageFile = SBR.svg|right|243px|thumb|Chemical structure of styrene-butadiene | Section3 = {{Chembox Structure
  5 KB (640 words) - 10:10, 20 September 2010
• Conductive polymer
  ==Correlation of chemical structure and electrical conductivity== ...Å, respectively.<ref>{{cite journal|doi=10.1103/PhysRevLett.51.1191|title=Molecular Geometry of cis- and trans-Polyacetylene by Nutation NMR Spectroscopy|year=
  22 KB (3,022 words) - 10:10, 20 September 2010
• Polyethylene terephthalate
  ...que and white (particle size up to a few microns) depending on its crystal structure and particle size. Its monomer (bis-β-hydroxyterephthalate) can be synthes ...several things happen: discoloration, chain scissions resulting in reduced molecular weight, formation of [[acetaldehyde]] and [[cross-link]]s ("gel" or "fish-e
  43 KB (6,272 words) - 10:11, 20 September 2010
• Dendronized polymer
  ...e dendrons like cake slices in green. It also provides a concrete chemical structure showing a [[polymethylmethacrylate]] ([[Poly(methyl methacrylate)|PMMA]]) b | [[Image:Baozhongdenpol2.JPG|upright|alt=chemical structure of a third generation dendronized polymer]]
  5 KB (724 words) - 10:11, 20 September 2010
• Polymer
  ...s were clusters of small molecules (called [[colloid]]s), without definite molecular weights, held together by an unknown force, a concept known as [[associatio ...n|modified further]] following translation in order to provide appropriate structure and functioning.
  45 KB (6,501 words) - 10:11, 20 September 2010
• Antimicrobial polymers
  ...molecule antimicrobial agents excel at the diffusion step due to their low molecular weight, while adsorption is better achieved by antimicrobial polymers. The ===Molecular Weight===
  26 KB (3,675 words) - 10:11, 20 September 2010
• Coordination polymers
  ...last=Chen|first=X|coauthors=Ye, B., Tong, M.|year=2005|title=Metal-organic molecular architectures with 2,2′-bipyridyl-like and carboxylate ligands|journal=Co ...techniques. The mechanisms of [[Molecular self-assembly]] processes on a molecular level are currently being investigated, however it is accepted that coordin
  23 KB (3,302 words) - 10:11, 20 September 2010
• Polycarbonate
  Repeating chemical structure unit of <br> ==Structure==
  20 KB (2,772 words) - 10:11, 20 September 2010
• Polyolefin
  ...ps]] are similar to [[1-Hexene|1-hexene]] or may be longer (see [[chemical structure]] below). ...e to remain oily, [[viscous]] liquids even at lower [[temperature]]s. Low molecular weight poly-''alpha''-olefins are useful as synthetic [[lubricant]]s such a
  4 KB (515 words) - 10:11, 20 September 2010
• Crystallization of polymers
  ...y the degree of crystallinity, but also by the size and orientation of the molecular chains. [[File:Polymerketten - amorph und kristallinEN.svg|thumb|The arrangement of molecular chains in amorphous and semicrystalline polymers.]]
  18 KB (2,533 words) - 10:11, 20 September 2010
• Polyethylene
  ...ay of representing the [[repeating unit]]. Note, however, that the C−H [[Molecular geometry|bond angles]] are not 90° as this diagram would indicate, but are ...pages=1921|ref=harv}}</ref> In certain circumstances it is useful to use a structure-based nomenclature; in such cases [[IUPAC]] recommends ''poly(methylene)''<
  20 KB (2,802 words) - 10:11, 20 September 2010
• Polyethylene glycol
  | IUPACName = poly(oxyethylene) <small>{structure-based}</small>,<br> poly(ethylene oxide) <small>{source-based}</small><ref> ...ethylene oxide (PEO)''' or '''polyoxyethylene (POE)''', depending on its [[molecular weight]], and under the tradename '''Carbowax'''.
  20 KB (2,883 words) - 10:12, 20 September 2010
• Nanofluidic Circuitry
  ...nsion of the structure is in nano-scale. Phenomena of fluids in nano-scale structure are discovered to be of different properties in [[electrochemistry]] and [[ ....<ref>Kuo T. C.; Sloan, L. A.; Sweedler, J. V.; Bohn, P. W.; "Manipulating Molecular Transport through Nanoporous Membranes by Control of Electrokinetic Flow: E
  23 KB (3,367 words) - 10:12, 20 September 2010
• Petroleum
  ...le]] liquid consisting of a complex mixture of [[hydrocarbon]]s of various molecular weights, and other [[organic compound]]s, that are found in [[Formation (st ...etals such as [[iron]], [[nickel]], [[copper]] and [[vanadium]]. The exact molecular composition varies widely from formation to formation but the proportion of
  69 KB (9,885 words) - 10:12, 20 September 2010
• Asphalt
  ...ecules of asphalt, because the number of molecules with different chemical structure is extremely large".<ref name="Quddus99">Muhammad Abdul Quddus (1992), p.99 ...ly boiled to get rid of the higher fractions, leaving a material of higher molecular weight which is thermoplastic and when layered on objects, became quite har
  34 KB (5,036 words) - 21:35, 20 September 2010
• Colloid
  ...sts of a solid phase dispersed in a liquid, the solid particles will not [[Molecular diffusion|diffuse]] through a membrane, whereas with a true solution the di ..., such as excluded volume interactions or electrostatic forces, govern the structure and behavior of colloidal suspensions. For example, the same techniques use
  27 KB (3,735 words) - 10:13, 20 September 2010
• Metallic bond
  ...[metal]]s. Understood as the sharing of "free" electrons among a [[crystal structure|lattice]] of positively charged ions ([[cations]]), metallic bonding is som ...n]] and [[thermal analysis]] (initially DTA) made it possible to study the structure of crystalline solids, including metals and their alloys, and the construct
  26 KB (4,024 words) - 10:13, 20 September 2010
• Coffea
  ...on and low pH degrade 11-S-storage–proteins of green coffee beans to low molecular weight [[peptide]]s and amino acids. The degradation is accelerated in the ...fense system of the digestive tract compared to arabinogalactan with lower molecular weight.<ref>GOTODA, N, IWAI, K, Arabinogalactan isolated from coffee beans
  29 KB (4,179 words) - 10:14, 20 September 2010
• Sorbent
  ...m diameter. They are typically made from [[aluminium oxide]] with a porous structure.
  1 KB (202 words) - 10:14, 20 September 2010
• Sugar
  Sugar, because of its simpler chemical structure, was once assumed (without scientific research) to raise blood glucose leve ...are the reactive centers. All saccharides with more than one ring in their structure result from two or more monosaccharides joined by [[glycosidic bond]]s with
  21 KB (2,875 words) - 10:14, 20 September 2010
• Vermiculite
  ==Structure== ...lays are weathered [[mica]]s in which the [[potassium]] ions between the [[molecular]] sheets are replaced by [[magnesium]] and [[iron]] ions.
  16 KB (2,229 words) - 10:14, 20 September 2010
• Kevlar
  | ImageFile1 = Kevlar chemical structure.png | ImageName1 = Kevlar molecular structure
  14 KB (1,990 words) - 10:16, 20 September 2010
• Chemical substance
  ...emical substance' means any organic or inorganic substance of a particular molecular identity, including - (i) any combination of such substances occurring in w ...cule]]s or [[crystal]]s in which atoms, molecules or ions form a [[crystal structure|crystalline lattice]]. Compounds based primarily on carbon and hydrogen at
  15 KB (2,242 words) - 10:17, 20 September 2010
• Microcrystalline wax
  ...hain components which they contain. Typical microcrystalline wax [[crystal structure]] is small and thin, making them more flexible than paraffin wax. It is com ...backbone allows oil molecules to be incorporated into the crystal lattice structure. The desired properties of the petrolatum can be modified by using microcry
  6 KB (953 words) - 10:17, 20 September 2010
• Wax
  ...arboxylic acid, or alcohol [[functional group|groups]]. The structure and molecular weight of the hydrocarbon chain and the relative concentration of the funct * [[Microcrystalline wax]] - with very fine crystalline structure
  11 KB (1,689 words) - 10:17, 20 September 2010
• Polyphenyl ether
  ...e in the latter class contain 2 to 4 alkyl groups on the phenyl ring. The structure of an oxygen-containing PPE is provided in Figure 1 and that of a 2, 6-xyle [[Image:Polyphenyl Ether.png‎|thumb|350px|Figure 1: Representative Structure of Polyphenyl Ether (PPE)]]
  18 KB (2,654 words) - 10:18, 20 September 2010
• 2-Aminophenol
  == Structure == ...has a rather high melting point compared to other molecules with a similar molecular mass such as [[methylphenol]].<ref>Reference Handbook of Fine Chemicals, Ac
  4 KB (476 words) - 13:11, 20 September 2010
• Toluidine
  ...stands for ''para''- . All three are [[aryl]] [[amine]]s whose [[chemical structure]]s are similar to [[aniline]] except that a [[methyl group]] is substituted | [[Molecular mass]]
  4 KB (551 words) - 13:11, 20 September 2010
• 3,3',5,5'-Tetramethylbenzidine
  | ImageName = Line Structure ...Chou MW|year=2000|title=Mutagenicity studies of benzidine and its analogs: Structure-activity relationships|journal=Toxicol Sci|volume=56|pages=351&ndash;356|pm
  4 KB (524 words) - 13:11, 20 September 2010
• 1,8-Bis(dimethylamino)naphthalene
  ==Structure and properties== ...scopic properties of Proton-sponge are very interesting for researchers of molecular chemistry and have been researched for a long time. Proton-sponge emits a d
  5 KB (644 words) - 13:12, 20 September 2010
• Luminol
  | ImageName = Chemical structure of luminol [[Image:Luminol chemiluminescence molecular representation.svg|550px|left|Reactions leading to the chemiluminescence of
  8 KB (1,158 words) - 13:12, 20 September 2010
• Amidol
  '''Amidol''' is a colorless [[crystal]]line compound with the molecular structure C₆H₃(NH₂)₂OH. It is a [[hydrog
  2 KB (219 words) - 13:13, 20 September 2010
• Ethidium bromide
  ...a [[fluorescent tag]] ([[nucleic acid]] [[staining (biology)|stain]]) in [[molecular biology]] laboratories for techniques such as [[agarose gel electrophoresis ==Structure, chemistry, fluorescence==
  15 KB (1,980 words) - 13:13, 20 September 2010
• Ethylene oxide
  | Section3 = {{Chembox Structure ...isting of two carbon and one oxygen atom. Because of its special molecular structure, ethylene oxide easily participates in the [[addition reaction]], opening i
  82 KB (11,709 words) - 21:31, 20 September 2010
• Indoor air quality
  ...erm referring to the [[air quality]] within and around [[building]]s and [[structure]]s, especially as it relates to the health and comfort of building occupant ...are formed. These products of ozone chemistry include formaldehyde, higher molecular weight aldehydes, acidic aerosols, and fine and ultrafine particles, among
  30 KB (4,388 words) - 21:31, 20 September 2010
• Cancer
  ...ogy|histologic]] [[grading (tumors)|grading]] and the presence of specific molecular markers can also be useful in establishing prognosis, as well as in determi ...form on the tissue specimen. These tests may provide information about the molecular changes (such as [[mutation]]s, [[fusion gene]]s, and numerical [[chromosom
  94 KB (13,321 words) - 21:32, 20 September 2010
• Benzene
  ...easurements show that chaotropic salting-in denaturants are not just water-structure breakers.|journal=Proceedings of the National Academy of Sciences of the Un ...t is also related to the functional group [[arene]] which is a generalized structure of benzene.
  45 KB (6,444 words) - 21:33, 20 September 2010
• Arsenic
  ...most common allotrope of arsenic is ''grey arsenic''. It adopts a layered structure, a ruffled analogue of [[graphite]], consisting of many interlocked six-mem [[Image:White phosphrous molecule.jpg|left|thumb|100px| Structure of yellow arsenic As₄ and white [[phosphorus]] P₄]]
  51 KB (7,314 words) - 21:34, 20 September 2010
• Chromium
  ...forming a thin protective oxide surface layer. This layer is a [[spinel]] structure only a few atoms thick. It is very dense, and prevents the diffusion of oxy Chromium(III) ions in water are invariably [[octahedral molecular geometry|octahedral]]ly coordinated with water molecules and anions. The co
  51 KB (7,299 words) - 21:34, 20 September 2010
• Beryllium
  ...es are known. [[beryllium fluoride|BeF₂]] has a [[silica]]-like structure with corner-shared BeF₄ tetrahedra. [[beryllium chloride|BeCl<su ...a white, high-melting-point solid, which has the [[zinc sulfide|wurtzite]] structure with a thermal conductivity as high as some metals. BeO is [[amphoteric]].
  41 KB (5,890 words) - 21:34, 20 September 2010
• Gluconic acid
  | Section3 = {{Chembox Structure '''Gluconic acid''' is an [[organic compound]] with [[molecular formula]] C₆H₁₂O₇ and condensed [[structur
  6 KB (794 words) - 20:14, 21 September 2010
• Porphin
  ...compound]] that is [[aromatic]] and [[heterocyclic]] since its [[chemical structure]], shown at right, essentially consists of four [[pyrrole]] rings joined to ...orphin stems both from its conjugation as well as its flat or [[planar]] [[Molecular geometry|geometry]], meaning that all the atoms lie in a single plane. [[C
  3 KB (467 words) - 20:14, 21 September 2010
• Crown ether
  ...e hexamer (n = 6). The term "crown" refers to the resemblance between the structure of a crown ether bound to a [[cation]], and a [[crown (headgear)|crown]] si * [http://www.org-chem.org/yuuki/crown/crown_en.html molecular crown]
  6 KB (864 words) - 20:14, 21 September 2010
• Scorpionate ligand
  *changing the ligands to alter the type of [[molecular encapsulation]] needed to metals; ...''[[isolobal principle|isolobal]]'' with the '''Cp''' ligands, here is the structure of the Cp [[manganese]] tricarbonyl complex. This compound like the others
  9 KB (1,297 words) - 20:14, 21 September 2010
• Catechol
  | Section3 = {{Chembox Structure ...catechol''' or '''1,2-dihydroxybenzene''', is an organic compound with the molecular formula C₆H₄(OH)₂. It is the ''ortho'' [[i
  11 KB (1,437 words) - 20:14, 21 September 2010
• 2,2'-Bipyridine
  | Section3 = {{Chembox Structure ...py = 2,2'-bipyridine). These complexes have six-coordinated, [[octahedral molecular geometry|octahedral]] structures and two [[enantiomer]]s as follows:
  5 KB (638 words) - 20:14, 21 September 2010
• Cyclen
  [[File:Cyclen Zinc InorgChem 1997 4579 commons.jpg|thumbnail|150px|Crystal structure of a Zn(II) coordinated to a cyclen and an ethanol reported in Inorg. Chem. ...> cyclen is [[covalent bond|covalently]] bonded through a [[propylene]] [[molecular spacer]] to [[adenine]] and [[chelation|chelated]] with [[zinc]] [[perchlor
  4 KB (531 words) - 20:15, 21 September 2010

View (previous 50 | next 50) (20 | 50 | 100 | 250 | 500)