Polyacetylenes
Research News and Information

Sunday, November 22, 2009

Chemical dynamics of triacetylene formation and implications to the synthesis of polyynes in Titan's atmosphere.

12 Sep 2009 For the last four decades, the role of polyynes such as diacetylene (HCCCCH) and triacetylene (HCCCCCCH) in the chemical evolution of the atmosphere of Saturn's moon Titan has been a subject of vigorous research. These polyacetylenes are thought to ... Read more...

Self-organization of a polymerizable bolaamphiphile bearing a diacetylene group and L-aspartic acid group.

16 Aug 2009 We report herein the self-organization of the polymerizable bolaamphiphile (noted, L-Asp-DA) that contains a diacetylene group and two L-aspartic groups. We found that L-Asp-DA can self-organize into stable fiberlike nanostructures at the mica-water ... Read more...

Polydiacetylene-based colorimetric self-assembled vesicular receptors for biological phosphate ion recognition.

25 Jul 2009 Self-assembled vesicular polydiacetylene (PDA) particles with embedded metal complex receptor sites have been prepared. The particles respond to the presence of ATP and PPi (pyrophosphate) in buffered aqueous solution by visible changes of their ... Read more...

Latest indexed articles for 'Polyacetylenes'

These are the very latest articles for this heading:

• Chemical dynamics of triacetylene formation and implications to the synthesis of polyynes in Titan's atmosphere. 12 Sep 2009
• Self-organization of a polymerizable bolaamphiphile bearing a diacetylene group and L-aspartic acid group. 16 Aug 2009
• Polydiacetylene-based colorimetric self-assembled vesicular receptors for biological phosphate ion recognition. 25 Jul 2009
• Fluidic delivery of homogeneous solutions through carbon tube bundles. 15 Jun 2009
• Tailoring carbon nanotube surfaces with glyconanorings: new bionanomaterials with specific lectin affinity. 31 May 2009
• NF-kappaB Activation by compounds found in Platycodon grandiflorum extract. 30 May 2009
• Depigmentation of melanocytes by (2Z,8Z)-matricaria acid methyl ester isolated from Erigeron breviscapus. 30 May 2009
• A combined semiempirical-DFT study of oligomers within the finite-chain approximation, evolution from oligomers to polymers. 30 May 2009
• Polymorphs and colors of polydiacetylenes: a first principles study. 25 May 2009
• Colorimetric and fluorometric detection of cationic surfactants based on conjugated polydiacetylene supramolecules. 29 Apr 2009
• Structural transitions in polydiacetylene Langmuir films. 19 Apr 2009
• Isolation and identification of a potent antimalarial and antibacterial polyacetylene from Bidens pilosa. 2 Mar 2009
• [Extraction of lobetyolin from codonopsis with supercritical CO2] 27 Feb 2009
• Rapid method for simultaneous determination of flavonoid, saponins and polyacetylenes in folium ginseng and radix ginseng by pressurized liquid extraction and high-performance liquid chromatography coupled with diode array detection and mass spectrometry. 25 Feb 2009
• Photo-controlled molecular recognition of alpha-cyclodextrin with azobenzene containing polydiacetylene vesicles. 11 Feb 2009
• Two-photon polymerization of polydiacetylene. 3 Feb 2009
• The fluorescence recovery of polydiacetylene/fluorophore vesicles by interaction with cetyltrimethylammonium bromide. 30 Jan 2009
• Plant growth regulating activity of three polyacetylenes from Helianthus annuus L. 30 Dec 2008
• Screening membrane interactions of pesticides by cells decorated with chromatic polymer nanopatches. 30 Dec 2008
• Biomass and content of ginsenosides and polyacetylenes in American ginseng roots can be increased without affecting the profile of bioactive compounds. 14 Dec 2008

See a longer list of these articles.

Technical information about 'Polyacetylenes'

Definition: Hydrocarbons with more than one triple bond; or an oxidized form of POLYENES. They can react with SULFUR to form THIOPHENES.

Registry Number: 25067-58-7

Descriptor UI: D053279

Alternative terms: Polyacetylenes; Polyynes; Polyacetylene;

Allowable Qualifiers: administration & dosage; adverse effects; analysis; antagonists & inhibitors; blood; cerebrospinal fluid; chemical synthesis; classification; diagnostic use; economics; history; immunology; isolation & purification; metabolism; pharmacokinetics; pharmacology; poisoning; radiation effects; standards; supply & distribution; therapeutic use; toxicity; urine; chemistry; contraindications; agonists;

Tree Number: D02.455.326.397.662;

History Note: 2007