VINYL END GROUPS FROM POLYESTER-GLYCOL AND THE PHYSICAL PROPERTIES OF THE COPOLYMERS WITH METHYL METHACRYLATE AND ACRYLONITRILE

1974 ◽  
Vol 47 (3) ◽  
pp. 199-202 ◽  
Author(s):  
Yasuhiro ISHIKAWA ◽  
Kunio KAGEYAMA ◽  
Tatsuro OUCHI ◽  
Minoru IMOTO
Keyword(s):  
Methyl Methacrylate ◽  
Physical Properties ◽  
End Groups

scholarly journals Introduction of Stilbene Derivatives and Cinnamate Ester Derivatives at the ω-End Groups of Poly(Methyl Methacrylate) Prepared via RAFT Polymerization

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2449
Author(s):  
Martyn Dobinson ◽  
Philip Hodge ◽  
Trevor Wear
Keyword(s):  
Nmr Spectroscopy ◽  
Methyl Methacrylate ◽  
Raft Polymerization ◽  
19F Nmr ◽  
19F Nmr Spectroscopy ◽  
Poly Methyl Methacrylate ◽  
End Groups ◽  
Stilbene Derivatives

The capping of “living” poly(methyl methacrylate) (PMMA) and “living” polystyrene (PS), both prepared by the RAFT technique, with various olefins was screened using 19F-NMR spectroscopy. The capping of “living” PMMA with a labeled stilbene was as high as 63% and with certain cinnamate esters was essentially quantitative, but the capping of “living” polystyrene with all the olefins investigated was generally poor.

scholarly journals Anthracene-Based Down-Converting Copolymers for Non-Invasive Optogenetic Techniques

2020 ◽  
Author(s):  
David French ◽  
Aundrea F. Bartley ◽  
Kavitha Abiraman ◽  
Micah Bagley ◽  
Benjamin Grant ◽  
...  
Keyword(s):  
Absorption Spectrum ◽  
Methyl Methacrylate ◽  
Physical Properties ◽  
Emission Intensity ◽  
High Energy ◽  
Neuronal Cultures ◽  
Non Invasive ◽  
Solid States ◽  
Neurological Response ◽  
Down Conversion

<p>The down-conversion of high energy light with a fluorescent material may provide sufficient emission intensity to invoke a measurable neurological response in optogentically-active neurons. This work describes the use of anthracene-containing copolymers for use as a fixed emission material in optogenetic electrophysiology to demonstrate the feasibility of this technique. An anthracene-modified methacrylate was synthesized and copolymerized with methyl methacrylate to produce glassy copolymers with physical properties like those of poly(methyl methacrylate) (PMMA). The fluorescence in both solution and solid states are like those of pure anthracene and overlap fully with the absorption spectrum of channelrhodpsin-2. Scintillation is observed but is weak compared to fluorescence. The copolymers were found to be non-toxic to neuronal cultures. Whole cell patching measured the voltage changes of neurons under UV-irradiation in the absence and presence of a copolymer film. Increased frequencies and amplitudes of electrical events were observed in the presence of the polymers. </p> <div> <hr> </div>

scholarly journals Synthesis and post-polymerization reaction of end-clickable stereoregular polymethacrylates via termination of stereospecific living anionic polymerization

2015 ◽  
Vol 6 (7) ◽  
pp. 1078-1087 ◽  
Author(s):  
Yasuhiro Kohsaka ◽  
Takashi Kurata ◽  
Kazuki Yamamoto ◽  
Shoya Ishihara ◽  
Tatsuki Kitayama
Keyword(s):  
Methyl Methacrylate ◽  
Anionic Polymerization ◽  
Polymerization Reaction ◽  
Living Anionic Polymerization ◽  
Poly Methyl Methacrylate ◽  
End Groups

Poly(methyl methacrylate)s with high stereoregularity and clickable end-groups were synthesized via terminating reactions with α-(halomethyl)acrylates in stereospecific living anionic polymerization.

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