scholarly journals Microphase separation in thin films of supramolecular assemblies composed of a triblock copolymer and low-molecular-weight additive

2010 ◽  
Vol 48 (14) ◽  
pp. 1594-1605 ◽  
Author(s):  
Bhanu Nandan
Keyword(s):  
Thin Films ◽  
Molecular Weight ◽  
Triblock Copolymer ◽  
Microphase Separation ◽  
Supramolecular Assemblies ◽  
Low Molecular Weight

Enhanced microphase separation of thin films of low molecular weight block copolymer by the addition of an ionic liquid

Soft Matter ◽  
2019 ◽  
Vol 15 (48) ◽  
pp. 9991-9996
Author(s):  
Dongxue Li ◽  
Chun Zhou ◽  
Shisheng Xiong ◽  
Xin-Ping Qu ◽  
Gordon S. W. Craig ◽  
...  
Keyword(s):  
Thin Films ◽  
Molecular Weight ◽  
Ionic Liquid ◽  
Block Copolymer ◽  
Microphase Separation ◽  
Low Molecular Weight

Enhanced microphase separation of a high-χ block copolymer by adding a selective ionic liquid to the block copolymer in solution.

Random Lasing in Low Molecular Weight Organic Thin Films

2011 ◽  
Author(s):  
S. Kéna-Cohen ◽  
P. N. Stavrinou ◽  
D. D. C. Bradley ◽  
S. A. Maier
Keyword(s):  
Thin Films ◽  
Molecular Weight ◽  
Organic Thin Films ◽  
Low Molecular Weight ◽  
Random Lasing

Thickness Dependence of the Crystalline Structure and Hole Mobility in Thin Films of Low Molecular Weight Poly(3-hexylthiophene)

2008 ◽  
Vol 41 (18) ◽  
pp. 6800-6808 ◽  
Author(s):  
Siddharth Joshi ◽  
Souren Grigorian ◽  
Ullrich Pietsch ◽  
Patrick Pingel ◽  
Achmad Zen ◽  
...  
Keyword(s):  
Thin Films ◽  
Molecular Weight ◽  
Crystalline Structure ◽  
Hole Mobility ◽  
Thickness Dependence ◽  
Low Molecular Weight

Templating Nanopores Into Poly(MethylSilsesquioxane): New Lowdielectric Coatings Suitable for MicroElectronic Applications

1998 ◽  
Vol 511 ◽  
Author(s):  
Julius F. Remenar ◽  
Craig J. Hawker ◽  
James L. Hedrick ◽  
Sung Mog Kim ◽  
Robert D. Miller ◽  
...  
Keyword(s):  
Experimental Data ◽  
Thin Films ◽  
Molecular Weight ◽  
Thermal Decomposition ◽  
Dielectric Constants ◽  
Organic Polymer ◽  
Low Molecular Weight ◽  
Polymer Templates ◽  
Cross Links ◽  
Poly Caprolactone

ABSTRACTThin films of nanoporous poly(methylsilsesquioxane) have been prepared from organic/inorganic polymer hybrids. Low molecular weight 6-arm star poly(caprolactone)s are incorporated into partially pre-condensed methylsilsesquioxane resin. Upon heating, the glass resin cross-links around the organic polymer templates. Thermal decomposition of the orgainc polymer produces nanoporous thin films which show tunable dielectric constants as low as 1.9 and exhibit properties suitable for use in interconnect devices. Experimental data including porosity, morphology, and dielectric constants are presented.

Control of Stem-Cell Behavior by Fine Tuning the Supramolecular Assemblies of Low-Molecular-Weight Gelators

2015 ◽  
Vol 54 (15) ◽  
pp. 4517-4521 ◽  
Author(s):  
Laurent Latxague ◽  
Michael A. Ramin ◽  
Ananda Appavoo ◽  
Pierre Berto ◽  
Mathieu Maisani ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Stem Cell ◽  
Supramolecular Assemblies ◽  
Fine Tuning ◽  
Cell Behavior ◽  
Low Molecular Weight ◽  
Low Molecular Weight Gelators

Direct Imaging of Non-Classical Triblock Copolymer Blend and Gel Morphologies in the Dilute Regime

1996 ◽  
Vol 54 ◽  
pp. 188-189
Author(s):  
Jonathan H. Laurer ◽  
Richard J. Spontak ◽  
Steven D. Smith ◽  
Rudy Bukovnik
Keyword(s):  
Molecular Weight ◽  
Self Assembly ◽  
Triblock Copolymer ◽  
Morphological Changes ◽  
Low Molecular Weight ◽  
Conformationally Constrained ◽  
Morphological Studies ◽  
Homopolymer Blends ◽  
Copolymer Blend ◽  
Copolymer Micelles

Incorporation of a low-molecular-weight, midblock-selective homopolymer into the microstructure of a microphase-ordered triblock copolymer results in preferential midblock swelling or a morphological transition, depending on the blend concentration and the size of the homopolymer chain relative to that of the host block. Since the blend properties are strongly dependent on the existing microstructure, morphological changes induced by variation in blend composition have attracted considerable interest. Recent efforts have sought to discern the phase stability of both copolymer-rich (concentrated) blends, in which parent homopolymer molecules are contained within their preferred microphase, and homo-polymer-rich (dilute) blends, in which the copolymer molecules micellize to reduce repulsive interactions in a parent homopolymer matrix. Since dilute blends typically consist of spherical copolymer micelles, most morphological studies have focused on concentrated copolymer/homopolymer blends in order to (i) tailor the blend microstructure, and properties, at the molecular level and (ii) examine macromolecular mixing in conformationally constrained nanoscale environments. In this work, we return to the dilute copolymer/homopolymer blend regime and examine the self-assembly of triblock copolymer molecules in the presence of low-molecular-weight parent and nonparent homopolymers and, in some cases, an oil.

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