104539-21-1Relevant articles and documents
Synthesis of pyrrolidinium-based poly(ionic liquid) electrolytes with poly(ethylene glycol) side chains
Doebbelin, Markus,Azcune, Itxaso,Bedu, Melanie,Ruiz De Luzuriaga, Alaitz,Genua, Aratz,Jovanovski, Vasko,Cabanero, German,Odriozola, Ibon
, p. 1583 - 1590 (2012)
The synthesis and characterization of a new family of pyrrolidinium based poly(ionic liquid) (PIL) electrolytes with poly(ethylene glycol) (PEG) pendant groups is reported. The PILs were synthesized from a diallyl methyl amine hydrochloride monomer, which
Formation of Enantiomerically Pure Luminescent Triple-Stranded Dimetallic Europium Helicates and Their Corresponding Hierarchical Self-Assembly Formation in Protic Polar Solutions
Barry, Dawn E.,Gunnlaugsson, Thorfinnur,Kitchen, Jonathan A.,Pandurangan, Komala,Peacock, Robert D.,Savyasachi, Aramballi Jayant
, (2020)
Ditopic helicate ligands 1 and 2 were synthesized for the formation of dinuclear EuIII luminescent chiral helical assemblies (Eu2·L3) in competitive organic and protic solvent media. Spectroscopic analysis revealed formation of the 2:3 (Eu2·L3) and 2:2 (Eu2·L2) species in methanolic solutions. Circular dichroism and circularly polarized luminescence (CPL) spectroscopy confirmed the chiral purity of the helical systems, while scanning electron microscopy imaging demonstrated the formation of hierarchical self-assemblies with spherical morphologies.
Aqueous supramolecular polymer formed from an amphiphilic perylene derivative
Arnaud, Alix,Belleney, Joel,Boue, Francois,Bouteiller, Laurent,Carrot, Geraldine,Wintgens, Veronique
, p. 1718 - 1721 (2004)
Aromatic stacking and hydrophobic interactions are the driving forces for the reversible self-assembly of an amphiphilic perylene derivative in water to form a linear polymer (see schematic representation). The structure of the assemblies has been elucida
Ionic liquid used for secondary battery, synthetic method and application thereof
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Paragraph 0050; 0052, (2018/07/30)
The invention provides an ionic liquid used for a secondary battery, a synthetic method and application. The ionic liquid used for the secondary battery is an ionic liquid containing a heteroatom sidechain, and a functional group with positive charges is
Visible light-absorbing rhenium(i) tricarbonyl complexes as triplet photosensitizers in photooxidation and triplet-triplet annihilation upconversion
Yi, Xiuyu,Zhao, Jianzhang,Sun, Jifu,Guo, Song,Zhang, Hongli
supporting information, p. 2062 - 2074 (2013/02/26)
We prepared N^N Re(i) tricarbonyl chloride complexes (Re-1 and Re-2) that give very strong absorption of visible light. To this end, it is for the first time that boron dipyrimethane (Bodipy) was used to prepare Re(i) tricarbonyl chloride complexes. The π-conjugation linker between the π-conjugation framework of the antenna Bodipy and the Re(i) coordination centre ensures efficient intersystem crossing (ISC). Re-0 without visible light-harvesting ligand was prepared as a model complex in the photophysical studies. Re-1 (with Bodipy) and Re-2 (with carbazole-ethynyl Bodipy) show unprecedented strong absorption of visible light at 536 nm (ε = 91700 M-1 cm -1) and 574 nm (ε = 64600 M-1 cm-1), respectively. Interestingly, different from Re-0, Re-1 and Re-2 show fluorescence of the ligand, not the phosphorescence of the Re(i) coordination centre. However, long-lived triplet excited states were observed upon visible light excitation (τT = 104.0 μs for Re-1; τT = 127.2 μs for Re-2) vs. the short lifetime of Re-0 (τT = 26 ns). With nanosecond time-resolved transient absorption spectroscopy and DFT calculations, we proved that the triplet excited states of Re-1 and Re-2 are localized on the Bodipy ligands. The complexes were used as triplet photosensitizers for two triplet-triplet-energy-transfer (TTET) processes, i.e.1O2 mediated photooxidation and triplet-triplet annihilation (TTA) upconversion. With the strong visible light-harvesting ability, Re-1 proved to be a better 1O2 photosensitizer than the conventional triplet photosensitizer tetraphenylporphyrin (TPP). Significant upconversion was observed with Re-1 as the triplet photosensitizer. Our result is useful for preparation of Re(i) tricarbonyl chloride complexes that show strong absorption of visible light and long-lived triplet excited states and for the application of these complexes as triplet photosensitizers in photocatalysis, photodynamic therapy and TTA upconversion. The Royal Society of Chemistry 2013.
Synthesis and characterization of novel ionic liquids: N-substituted aziridinium salts
Duriska, Martin B.,Grondin, Joseph,Servant, Laurent,Birot, Marc,Deleuze, Herve
experimental part, p. 652 - 657 (2012/08/27)
Ionic liquids based on three-membered ring aziridinium cations have been synthesized for the first time using a straightforward synthetic route. N-butyl-N-methylaziridinium bis(trifluoromethanesulfonyl)imide, N-propyl-N-ethylaziridinium bis(trifluoromethanesulfonyl)imide, N-butyl-N-[2-(2-methoxyethoxy)ethyl]aziridinium bis(trifluoromethanesulfonyl) imide, N-butyl-N-methylaziridinium dicyanamide, and N-butyl-N-ethylaziridinium dicyanamide were thus obtained in good yields and satisfactory purity and fully characterized.
SYNTHESIS OF DIFUNCTIONAL OXYETHYLENE-BASED COMPOUNDS
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Page/Page column 2-3, (2009/07/25)
A method of reacting a toluenesulfonyl-terminated polyoxyethylene compound having the formula CH3—C6H4—SO2—(O—CH2—CH2)n—O—R1 with an ammonium salt having the formula NR24X to form a compound having the formula X—CH2—CH2—(O—CH2—CH2)n-1—R3. The value n is a positive integer. X is a halogen, cyanide, cyanate, thiocyanate, or azide. R1 is a terminating group. Each R2 is hydrogen or an alkyl group. —R3 is —O—R1 or —X.
Practical use of NH4X salts for difunctional oxyethylene-based intermediates
Holmes, Brian T.,Snow, Arthur W.
, p. 4813 - 4815 (2008/02/05)
A series of tosyl functionalized oxyethylene-based organic compounds were selected to analyze the scope and efficiency of a general substitution method for conversion to difunctional, soluble oxyethylene based intermediates using readily available ammonium salts, glycols and commercially modified ethoxy-ethanols. Straightforward preparation, product purification and low cost reagents are particularly advantageous for compounds incorporating halides, thiocyanates and methoxy groups.
Investigations on the influence of 2'-O-alkyl modifications on the base pairing properties of oligonucleotides
Werner, Doris,Brunar, Helmut,Noe, Christian R.
, p. 3 - 10 (2007/10/03)
The antisense strategy has gained wide acceptance as a promising drug development concept. Antisense drugs hybridize with selected complementary sequences in a highly specific manner. However, as a main prerequisite for extensive therapeutic use of this new class of drugs, selected structural modifications are required to adjust pharmacokinetic and pharmacodynamic behavior. In continuation of our earlier investigations on 2'-O-modified oligonucleotides (Gotten, M., Oberhauser, B., Brunar, H., Holzner, A., Issakides, G., Noe, C.R., Schaffer, G., Wagner, E., Bimstiel, M.L., 1991. 2'-O-methyl, 2'-O-ethyl oligoribonucleotides and phosphorothioate oligodeoxyribonucleotides as inhibitors of the in vitro U7 snRNP-dependent mRNA processing event. Nucleic Acids Res. 19, 2629-2635; Wagner, E., Oberhauser, B., Holzner, A., Brunar, H., Issakides, G., Schaffner, G., Gotten, M., Knollmuller, M., Noe, C.R., 1991. A simple procedure for the preparation of protected 2'-O-methyl or 2'-O-ethyl ribonucleoside-3'-O-phosphoramidites. Nucleic Acids Res. 19, 5965-5971) further series of modified oligonucleotides containing different modified 2'-O-adenosines have been synthesized. On the one hand linear alkyl moieties of increasing length, on the other hand oxyethylene moieties of corresponding length were introduced at the 2'-O-position of adenosine. Following another approach a cationic charge was introduced by insertion of an aminohexylmodification at the 2'-O-position of adenosine (Brunar, H., Haberhauer, G., Werner, D., Noe, C.R., 1994. 2'-O-Modified oligonucleotides: Synthesis and biophysical analysis. Eur. J. Pharm. Sci. 2, 150). Molecule dynamics simulations had shown that this cationic modification upon duplex formation leads to both intra- and interstrand interactions. To determine the influence of the different modifications, such as cationic charge, alkyl chainlength and introduction of oxygen into the chain, on duplex stability melting temperatures were measured by recording circular dichroism versus temperature.
New isomeric classes of topically active ocular hypotensive carbonic anhydrase inhibitors: 5-Substituted thieno[2,3-b]thiophene-2-sulfonamides and 5-substituted theio[3,2-b]thiophene-2-sulfonamides
Prugh,Hartman,Mallorga,McKeever,Michelson,Murcko,Schwam,Smith,Sondey,Springer,Sugrue
, p. 1805 - 1818 (2007/10/02)
A series of 5-substituted thieno[2,3-b]- and thieno[3,2-b]thiophene-2-sulfonamides was prepared and evaluated for topical ocular hypotensive activity in glaucoma models. The 5-substituents were varied to maximize both inhibitory potency against carbonic anhydrase and water solubility. At the same time, these substituents were varied in order to obtain compounds with the appropriate pK(a) to minimize pigment binding in the iris. All of these variables were optimized in the best compound, 5-[[(methoxyethyl)](methoxyethyl)ethyl]amino]methyl]thieno[2,3-b] thiophene-2-sulfonamide hydrochloride (55).
