scholarly journals Nanopatterned Protein Films Directed by Ionic Complexation with Water-Soluble Diblock Copolymers

2012 ◽  
Vol 45 (11) ◽  
pp. 4572-4580 ◽  
Author(s):  
Bokyung Kim ◽  
Christopher N. Lam ◽  
Bradley D. Olsen
Keyword(s):  
Diblock Copolymers ◽  
Water Soluble ◽  
Protein Films ◽  
Ionic Complexation

GC Investigation of the Solubility Parameters of Water-Soluble Homopolymers and Double-Hydrophilic Diblock Copolymers

2008 ◽  
Vol 67 (9-10) ◽  
pp. 741-747 ◽  
Author(s):  
Demet Topaloğlu Yazıcı ◽  
Ayşegül Aşkın ◽  
Vural Bütün
Keyword(s):  
Diblock Copolymers ◽  
Water Soluble ◽  
Solubility Parameters

Micelles of polyisobutylene-block-poly(methacrylic acid) diblock copolymers and their water-soluble interpolyelectrolyte complexes formed with quaternized poly(4-vinylpyridine)

Polymer ◽  
2004 ◽  
Vol 45 (2) ◽  
pp. 367-378 ◽  
Author(s):  
Dmitry V. Pergushov ◽  
Ekaterina V. Remizova ◽  
Michael Gradzielski ◽  
Peter Lindner ◽  
Jesper Feldthusen ◽  
...  
Keyword(s):  
Methacrylic Acid ◽  
Diblock Copolymers ◽  
Water Soluble ◽  
Interpolyelectrolyte Complexes

scholarly journals UV-CD12: synchrotron radiation circular dichroism beamline at ANKA

2015 ◽  
Vol 22 (3) ◽  
pp. 844-852 ◽  
Author(s):  
Jochen Bürck ◽  
Siegmar Roth ◽  
Dirk Windisch ◽  
Parvesh Wadhwani ◽  
David Moss ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Synchrotron Radiation ◽  
Lipid Bilayers ◽  
Spectral Range ◽  
Signal To Noise Ratio ◽  
Linear Dichroism ◽  
Water Soluble ◽  
Protein Films ◽  
Hydrated Protein ◽  
Circular Dichroïsm

Synchrotron radiation circular dichroism (SRCD) is a rapidly growing technique for structure analysis of proteins and other chiral biomaterials. UV-CD12 is a high-flux SRCD beamline installed at the ANKA synchrotron, to which it had been transferred after the closure of the SRS Daresbury. The beamline covers an extended vacuum-UV to near-UV spectral range and has been open for users since October 2011. The current end-station allows for temperature-controlled steady-state SRCD spectroscopy, including routine automated thermal scans of microlitre volumes of water-soluble proteins down to 170 nm. It offers an excellent signal-to-noise ratio over the whole accessible spectral range. The technique of oriented circular dichroism (OCD) was recently implemented for determining the membrane alignment of α-helical peptides and proteins in macroscopically oriented lipid bilayers as mimics of cellular membranes. It offers improved spectral quality <200 nm compared with an OCD setup adapted to a bench-top instrument, and accelerated data collection by a factor of ∼3. In addition, it permits investigations of low hydrated protein films down to 130 nm using a rotatable sample cell that avoids linear dichroism artifacts.

Preparation and Drug Release Studies of Chitosan/Methoxy Poly(Ethylene Glycol)-b-Poly(D,L-Lactide-co-Glycolide) Nanocomposite Films for Use as Controlled Release Drug Delivery

2008 ◽  
Vol 55-57 ◽  
pp. 717-720 ◽  
Author(s):  
N. Niamsa ◽  
M. Srisa-ard ◽  
Y. Srisuwan ◽  
N. Kotsaeng ◽  
Y. Baimark ◽  
...  
Keyword(s):  
Drug Release ◽  
Ethylene Glycol ◽  
Diblock Copolymer ◽  
Diblock Copolymers ◽  
Chitosan Film ◽  
Water Soluble ◽  
Nanocomposite Films ◽  
Poly Ethylene Glycol ◽  
Chitosan Films ◽  
Poly Ethylene

Nanocomposite chitosan-based films incorporated with drug-loaded methoxy poly(ethylene glycol)-b-poly(D,L-lactide-co-glycolide) diblock copolymers (MPEG-b-PDLLG) nanoparticles were prepared by forming drug-loaded nanoparticles in chitosan solution before suspension-solution film casting. Salicylic acid was used as a poorly-water soluble model drug. The nanocomposite films with DLL/G ratios of 100/0 and 85/15 mol% and chitosan/diblock copolymer/drug ratios of 80/1/1, 80/2/2 and 80/4/4 (w/w) were prepared and investigated. The sizes of drug-loaded nanoparticles into the chitosan films were approximate or less than 100 nm. Nanopores were observed in the resulted chitosan films incorporated with drug-loaded nanoparticles when the diblock copolymer ratio was increased up to 2. Number and size of the nanopores increased as increasing the diblock copolymer ratio. Only the nanocomposite films with chitosan/diblock copolymer/drug ratio of 80/1/1 (w/w) showed slower drug release than the chitosan film.

The electrostatic co-assembly in non-stoichiometric aqueous mixtures of copolymers composed of one neutral water-soluble and one polyelectrolyte (either positively or negatively charged) block: a dissipative particle dynamics study

2016 ◽  
Vol 18 (24) ◽  
pp. 16137-16151 ◽  
Author(s):  
Karel Šindelka ◽  
Zuzana Limpouchová ◽  
Martin Lísal ◽  
Karel Procházka
Keyword(s):  
Diblock Copolymers ◽  
Dissipative Particle Dynamics ◽  
Particle Dynamics ◽  
Water Soluble ◽  
Aqueous Mixtures ◽  
Neutral Water

The electrostatic co-assembly in non-stoichiometric aqueous mixtures of diblock copolymers.

New water soluble azobenzene-containing diblock copolymers: synthesis and aggregation behavior

Polymer ◽  
2005 ◽  
Vol 46 (1) ◽  
pp. 137-146 ◽  
Author(s):  
P. Ravi ◽  
S.L. Sin ◽  
L.H. Gan ◽  
Y.Y. Gan ◽  
K.C. Tam ◽  
...  
Keyword(s):  
Diblock Copolymers ◽  
Water Soluble ◽  
Aggregation Behavior

Synthesis and Characterization of Branched Water-Soluble Homopolymers and Diblock Copolymers Using Group Transfer Polymerization

2005 ◽  
Vol 38 (12) ◽  
pp. 4977-4982 ◽  
Author(s):  
V. Bütün ◽  
I. Bannister ◽  
N. C. Billingham ◽  
D. C. Sherrington ◽  
S. P. Armes
Keyword(s):  
Diblock Copolymers ◽  
Water Soluble ◽  
Synthesis And Characterization ◽  
Group Transfer
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