Search results for "pentafluorophenyl"
showing 10 items of 64 documents
The pentafluorophenyl group as π-acceptor for anions: a case study
2015
Chemical science 6(1), 354-359 (2015). doi:10.1039/C4SC02762K
Sequential conversion of orthogonally functionalized diblock copolymers based on pentafluorophenyl esters
2010
Statistic and block copolymers exhibiting activated ester side groups were synthesized by reversible addition-fragmentation chain transfer polymerization in the presence of cumyl dithiobenzoate, benzyl dithiobenzoate, and 4-cyano-4-((thiobenzoyl)sulfanyl)pentanoic acid as chain transfer agents. Pentafluorophenyl methacrylate and pentafluorophenyl 4-vinylbenzoate were used to enable a sequential functionalization of the obtained copolymers by conversion of the activated esters with different amines. 1H NMR spectroscopy, 19F NMR spectroscopy, and FTIR spectroscopy showed the successful step-by-step conversion of the different activated esters by aniline followed by aliphatic amines, thereby r…
Reactive nanorods based on activated esterpolymers: a versatile template-assisted approach for the fabrication of functional nanorods
2011
A new route for the fabrication of polymeric nanorods with functional moieties via post-modification of reactive nanorods is described. To this end reactive nanorods with a homogenous and narrow size distribution were fabricated by utilizing an anodic aluminium oxide (AAO) template-assisted approach. The nanorods are based on activated pentafluorophenyl esters, to enable quantitative post-modification with amines under very mild reaction conditions yielding the corresponding functionalized amide. Post-modification with fluorescent dyes as well as the conversion into well-dispersed rod-shaped poly(N-isopropylacrylamide) (PNIPAM) hydrogels that exhibit a thermal-responsive phase transition wa…
Room temperature ionic liquids based on cationic porphyrin derivatives and tetrakis(pentafluorophenyl)borate anion
2011
A series of 11 low melting ionic liquids based on meso-substituted A3B -porphyrins and A2B2-porphyrins containing one or two pyridyl substituents have been synthesized in high yields. Three of them are liquids at room temperature. All these porphyrinic salts were characterized by1H NMR,19F NMR, MALDI-TOF mass spectrometry, elemental analysis and UV-visible spectroscopy. The thermal properties and conductivity values of these salt derivatives have been also measured. A specific conductivity value of up to 4 mS.cm-1could be obtained for a compound having the counter-anion B(C6F5)4-.
Synthesis of Reactive Telechelic Polymers Based on Pentafluorophenyl Esters
2008
A diazo initiator and a chain transfer agent (CTA), both containing a pentafluorophenyl (PFP) activated ester, were synthesized. In a RAFT polymerization using the functionalized chain transfer agent (PFPCTA), methyl methacrylate (MMA), diethylene glycol monomethyl ether methacrylate (DEGMA), poly(ethylene glycol) monomethyl ether methacrylate (PEGMA), and lauryl methacrylate (LMA) could successfully be polymerized into homopolymers and diblock copolymers with good control over molecular weight, very high conversions, and narrow molecular weight distributions. Polymers derived from the PFP-CTA possessed an activated ester at the R-end of the polymer chain, which could be reacted with amines…
CCDC 956380: Experimental Crystal Structure Determination
2013
Related Article: Adrian Y. Houghton, Virve A. Karttunen, Warren E. Piers, Heikki M. Tuononen|2014|Chem.Commun.|50|1295|doi:10.1039/C3CC48796B
CCDC 774616: Experimental Crystal Structure Determination
2011
Related Article: M.Muller, M.Albrecht, V.Gossen, T.Peters, A.Hoffmann, G.Raabe, A.Valkonen, K.Rissanen|2010|Chem.-Eur.J.|16|12446|doi:10.1002/chem.201001534
CCDC 1551848: Experimental Crystal Structure Determination
2017
Related Article: Richard Layfield, Fu-Sheng Guo, Benjamin Day, Yan-Cong Chen, Ming-Liang Tong, Akseli Mansikamäkki|2017|Angew.Chem.,Int.Ed.|56|11445|doi:10.1002/anie.201705426
CCDC 692124: Experimental Crystal Structure Determination
2008
Related Article: M.Albrecht, C.Wessel, M.de Groot, K.Rissanen, A.Luchow|2008|J.Am.Chem.Soc.|130|4600|doi:10.1021/ja800219g
CCDC 1871415: Experimental Crystal Structure Determination
2019
Related Article: Adrien T. Normand, Quentin Bonnin, Stéphane Brandès, Philippe Richard, Paul Fleurat-Lessard, Charles H. Devillers, Cédric Balan, Pierre Le Gendre, Gerald Kehr, Gerhard Erker|2019|Chem.-Eur.J.|25|2803|doi:10.1002/chem.201805430