Polymer Network Fabricated by Topochemical Polymerization of Self-assembly Films Composed of a Diacetylene Derivative

2005 ◽  
Vol 34 (2) ◽  
pp. 156-157 ◽  
Author(s):  
Kaori Sasada ◽  
Yuko Nishiwaki ◽  
Yuko Takeoka ◽  
Masahiro Rikukawa ◽  
Kohei Sanui
Keyword(s):  
Self Assembly ◽  
Polymer Network ◽  
Topochemical Polymerization ◽  
Diacetylene Derivative

scholarly journals Improving the reactivity of phenylacetylene macrocycles toward topochemical polymerization by side chains modification

2014 ◽  
Vol 10 ◽  
pp. 1613-1619 ◽  
Author(s):  
Simon Rondeau-Gagné ◽  
Jules Roméo Néabo ◽  
Maxime Daigle ◽  
Katy Cantin ◽  
Jean-François Morin
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Raman Spectroscopy ◽  
Self Assembly ◽  
Significant Enhancement ◽  
Side Chains ◽  
X Ray Diffraction ◽  
X Ray ◽  
Topochemical Polymerization ◽  
Scanning Electron

The synthesis and self-assembly of two new phenylacetylene macrocycle (PAM) organogelators were performed. Polar 2-hydroxyethoxy side chains were incorporated in the inner part of the macrocycles to modify the assembly mode in the gel state. With this modification, it was possible to increase the reactivity of the macrocycles in the xerogel state to form polydiacetylenes (PDAs), leading to a significant enhancement of the polymerization yields. The organogels and the PDAs were characterized using Raman spectroscopy, X-ray diffraction (XRD) and scanning electron microscopy (SEM).

Supramolecular Polymer Network-Mediated Self-Assembly of Semicrystalline Polymers with Excellent Crystalline Performance

2017 ◽  
Vol 38 (5) ◽  
pp. 1600702 ◽  
Author(s):  
Chih-Chia Cheng ◽  
Wei-Tsung Chuang ◽  
Duu-Jong Lee ◽  
Zhong Xin ◽  
Chih-Wei Chiu
Keyword(s):  
Self Assembly ◽  
Polymer Network ◽  
Semicrystalline Polymers ◽  
Supramolecular Polymer

Hydrogen-bond-driven supramolecular self-assembly of diacetylene derivatives for topochemical polymerization in solution

2020 ◽  
Vol 11 (11) ◽  
pp. 1947-1953 ◽  
Author(s):  
Jianqiang Fan ◽  
Xiao Xu ◽  
Wei Yu ◽  
Zhihong Wei ◽  
Dengqing Zhang
Keyword(s):  
Hydrogen Bond ◽  
Self Assembly ◽  
Structure Directing Agent ◽  
Topochemical Polymerization

We report here photoinduced topochemical polymerizations of diacetylene-derivatized compound by the introduction of amide functions as the structure directing agent in solution.

Composite Elastomer Exhibiting a Stress-Dependent Color Change and High Toughness Prepared by Self-Assembly of Silica Particles in a Polymer Network

2020 ◽  
Vol 2 (9) ◽  
pp. 4078-4089 ◽  
Author(s):  
Eiji Miwa ◽  
Kenta Watanabe ◽  
Fumio Asai ◽  
Takahiro Seki ◽  
Kenji Urayama ◽  
...  
Keyword(s):  
Self Assembly ◽  
Color Change ◽  
Polymer Network ◽  
Silica Particles ◽  
High Toughness ◽  
Stress Dependent

Gold Nanoparticle Aggregate Morphology with Controllable Interparticle Spacing Prepared by a Polyelectrolyte Network Template

2008 ◽  
Vol 61 (1) ◽  
pp. 1 ◽  
Author(s):  
Feng Zhao ◽  
Jing Kun Xun ◽  
Shu Feng Liu
Keyword(s):  
Gold Nanoparticle ◽  
Self Assembly ◽  
Large Scale ◽  
Polymer Network ◽  
Resonance Wavelength ◽  
Interparticle Spacing ◽  
Excitation Wavelength ◽  
Mica Surface ◽  
Simple Method ◽  
Nanostructured Gold

Gold nanoparticle self-assembly behaviour on a mica surface was investigated. A large-scale modified partially hydrated polyacrylamide network on a mica surface was successfully fabricated with a simple method. Gold nanoparticles were self-assembled onto a two-dimensional polymer network template by electrostatic interaction, and an interesting nanostructured gold morphology with controllable interparticle spacing was formed on the mica surface. By adjusting the gold aqueous concentrations, the particle distance could be optimized to approach strongest coupling between adjacent particles and match the plasmon resonance wavelength to the laser excitation wavelength. Thus, the spacing between nanoparticles could be controlled for tunable surface-enhanced Raman scattering substrates for optimal signal amplification.

A Multiresponsive, Shape-Persistent, and Elastic Supramolecular Polymer Network Gel Constructed by Orthogonal Self-Assembly

2011 ◽  
Vol 24 (3) ◽  
pp. 362-369 ◽  
Author(s):  
Xuzhou Yan ◽  
Donghua Xu ◽  
Xiaodong Chi ◽  
Jianzhuang Chen ◽  
Shengyi Dong ◽  
...  
Keyword(s):  
Self Assembly ◽  
Polymer Network ◽  
Supramolecular Polymer

Transient laser heating induced hierarchical porous structures from block copolymer–directed self-assembly

Science ◽  
2015 ◽  
Vol 349 (6243) ◽  
pp. 54-58 ◽  
Author(s):  
Kwan Wee Tan ◽  
Byungki Jung ◽  
Jörg G. Werner ◽  
Elizabeth R. Rhoades ◽  
Michael O. Thompson ◽  
...  
Keyword(s):  
Pore Size ◽  
Surface Area ◽  
Self Assembly ◽  
Laser Heating ◽  
Shape Control ◽  
High Surface ◽  
Polymer Network ◽  
High Surface Area ◽  
Porous Polymer ◽  
Hierarchical Porous

Development of rapid processes combining hierarchical self-assembly with mesoscopic shape control has remained a challenge. This is particularly true for high-surface-area porous materials essential for applications including separation and detection, catalysis, and energy conversion and storage. We introduce a simple and rapid laser writing method compatible with semiconductor processing technology to control three-dimensionally continuous hierarchically porous polymer network structures and shapes. Combining self-assembly of mixtures of block copolymers and resols with spatially localized transient laser heating enables pore size and pore size distribution control in all-organic and highly conducting inorganic carbon films with variable thickness. The method provides all-laser-controlled pathways to complex high-surface-area structures, including fabrication of microfluidic devices with high-surface-area channels and complex porous crystalline semiconductor nanostructures.

Article

1998 ◽  
Vol 76 (11) ◽  
pp. 1766-1778
Author(s):  
Chi Ming Yam ◽  
Adam Dickie ◽  
Aramice Malkhasian ◽  
Ashok K Kakkar ◽  
M A Whitehead
Keyword(s):  
Thin Films ◽  
Molecular Mechanics ◽  
Photoelectron Spectroscopy ◽  
Self Assembly ◽  
Molecular Orbitals ◽  
Base Hydrolysis ◽  
Crystal Silicon ◽  
Topochemical Polymerization ◽  
Modeling Studies ◽  
Rigid Rod

The hydrolysis of surface-bound basic tin-amide moieties with acidic protons of alkynyl chromophores leads to molecular self-assembly of a variety of rigid-rod alkynes on inorganic oxide surfaces such as glass, quartz, and single crystal silicon. Characterization of these newly developed thin films was achieved by contact-angle goniometry, FTIR-ATR, ellipsometry, and X-ray photoelectron spectroscopy, which indicate that these thin films are densely packed. Comparative molecular mechanics modeling studies on unbound and chemisorbed -Sn-Ctriple bondC-H monomer, dimer, trimer, and a 12 × 12 (144 molecule) model substrate, suggest that surface anchoring of Sn-alkynyl units is essential for highly ordered thin-film structures that can effect topochemical polymerization. Preliminary MO calculations on a 4 × 4 model show conjugated molecular orbitals through the system.Key words: molecular self-assembly, rigid-rod alkynes, acid-base hydrolysis, tin-alkynyl thin films, molecular mechanics modeling studies, topochemical polymerization, molecular orbitals.

Sign in / Sign up

Export Citation Format

Share Document