Discriminating Among Co-monomer Sequence Distributions in Random Copolymers Using Interaction Chromatography

2009 ◽  
Vol 30 (18) ◽  
pp. 1543-1548 ◽  
Author(s):  
Junwon Han ◽  
Byung Ho Jeon ◽  
Chang Y. Ryu ◽  
James J. Semler ◽  
Young K. Jhon ◽  
...  
Keyword(s):  
Random Copolymers ◽  
Monomer Sequence ◽  
Sequence Distributions

Facile Method of Controlling Monomer Sequence Distributions in Random Copolymers

2007 ◽  
Vol 19 (19) ◽  
pp. 2877-2883 ◽  
Author(s):  
J. J. Semler ◽  
Y. K. Jhon ◽  
A. Tonelli ◽  
M. Beevers ◽  
R. Krishnamoorti ◽  
...  
Keyword(s):  
Random Copolymers ◽  
Monomer Sequence ◽  
Sequence Distributions

Monomer Sequence Distribution in Butadiene Styrene Copolymers

1970 ◽  
Vol 43 (5) ◽  
pp. 1138-1153 ◽  
Author(s):  
V. D. Mochel ◽  
B. L. Johnson
Keyword(s):  
Aromatic Proton ◽  
Analog Computer ◽  
Curve Analysis ◽  
Nmr Spectrum ◽  
Sequence Distribution ◽  
Monomer Sequence ◽  
Styrene Copolymers ◽  
Overlapped Peaks ◽  
Sequence Distributions ◽  
Butadiene Styrene

Abstract A method is described for determining styrene sequence distribution in butadiene-styrene copolymers. An analog computer is used to resolve overlapped peaks in the styrene aromatic proton NMR spectrum. In n-BuLi copolymers a quite quantitative distinction can be made between “short” sequences, containing two and three styrene units, and “long” sequences, containing more than three units. With this method it is possible to determine experimentally the styrene-centered triad distributions and approximate styrene sequence distributions of butadiene—styrene copolymers. Agreement between calculated and NMR-curve analysis results is good, especially for n-butyllithium-catalyzed butadiene—styrene copolymers.

Determining the Polydispersity in Chemical Composition and Monomer Sequence Distribution in Random Copolymers Prepared by Postpolymerization Modification of Homopolymers

2012 ◽  
Vol 1 (9) ◽  
pp. 1128-1133 ◽  
Author(s):  
Wayne Powers ◽  
Chang Y. Ryu ◽  
Young K. Jhon ◽  
Lawrence A. Strickland ◽  
Carol K. Hall ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Random Copolymers ◽  
Sequence Distribution ◽  
Monomer Sequence

Monomer sequence distributions in ethylene-1-hexene copolymers

1982 ◽  
Vol 15 (5) ◽  
pp. 1402-1406 ◽  
Author(s):  
Eric T. Hsieh ◽  
James C. Randall
Keyword(s):  
Monomer Sequence ◽  
Sequence Distributions

scholarly journals Patterning Polyelectrolyte Complexes with Alternating Monomer Sequence Distributions

2019 ◽  
Author(s):  
Abraham Herzog-Arbeitman ◽  
Jeffrey Ting ◽  
Siqi Meng ◽  
Hao Wu ◽  
Matthew Tirrell
Keyword(s):  
Phase Separation ◽  
Polyelectrolyte Complexes ◽  
Monomer Sequence ◽  
Charged Macromolecules ◽  
Chain Sequence ◽  
Sequence Distributions

<div> <div> <div> <p>Charge-driven complexation of polyelectrolytes in water is a fundamental phase separation phenomenon that is prevalent in nature and across the high-value technology landscape. Here we describe an experimentally convenient and versatile approach to construct patterned PECs, comprising well-defined charged macromolecules with both ionic styrene and neutral maleimide units alternating in the chain sequence. </p> </div> </div> </div>

Estimating Monomer Sequence Distributions in Tetrapolyacrylates

2014 ◽  
Vol 48 (1) ◽  
pp. 58-63 ◽  
Author(s):  
Yavuz Caydamli ◽  
Yi Ding ◽  
Abhay Joijode ◽  
Shanshan Li ◽  
Jialong Shen ◽  
...  
Keyword(s):  
Monomer Sequence ◽  
Sequence Distributions

Absorption and Luminescence Properties of Sequentially Random- and Defined Copolymers Based on Poly(fluorene-benzothiadiazole)

2003 ◽  
Vol 771 ◽  
Author(s):  
Petra Herguth ◽  
Joo Hyun Kim ◽  
Xuezhong Jiang ◽  
Michelle S. Liu ◽  
Alex K-Y. Jen
Keyword(s):  
Charge Transfer ◽  
Intermolecular Interactions ◽  
Intramolecular Charge Transfer ◽  
Building Blocks ◽  
Random Copolymers ◽  
Conjugation Length ◽  
Polymer Backbone ◽  
Monomer Sequence ◽  
Identical Monomer ◽  
Effective Conjugation Length

AbstractThe emission wavelength in conjugated copolymers is determined by the various monomers used, their sequence in the polymer backbone, the effective conjugation length of the material, and intra- and intermolecular interactions of the different units. This paper will discuss the influence of conjugation length as well as the influence of intramolecular charge-transfer on the absorption and emission properties. Fluorene, benzothiadiazole and a third comonomer (fluorene, xylene or triphenylamine) were used as building blocks. The influence of monomer sequence is probed as well by comparing sequentially random copolymers to their sequentially defined ones with identical monomer ratios. Model oligomers were also made for comparison.

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