Oligo(FcDC-co-CholDEA) with Ferrocene in the Main Chain and Cholesterol as a Pendant Group—Preparation and Unusual Properties

2010 ◽  
Vol 114 (41) ◽  
pp. 13116-13120 ◽  
Author(s):  
Junlin Yan ◽  
Jing Liu ◽  
Yuanhui Sun ◽  
Ping Jing ◽  
Panli He ◽  
...  
Keyword(s):  
Main Chain ◽  
Pendant Group

Fluorescent multi-component polymer sensors for sensitive and selective detection of Hg2+/Hg+ ions via fluorescence and colorimetry dual mode

2021 ◽  
Author(s):  
Kaiqi Liu ◽  
Luminita Marin ◽  
Li Xiao ◽  
Xinjian Cheng
Keyword(s):  
Small Molecule ◽  
Main Chain ◽  
Special Functions ◽  
Selective Detection ◽  
Pendant Group ◽  
Dual Mode ◽  
Multiple Components ◽  
Polymer Sensors ◽  
Boron Dipyrromethene

Multi-component polymer (MCP) is a kind of polymer that incorporates multiple components in the main chain or pendant group and has special functions. In this work, small-molecule fluorescent boron-dipyrromethene (BODIPY)...

Synthesis and Properties of a Novel Polymeric Phosphate Flame Retardant

2013 ◽  
Vol 750-752 ◽  
pp. 785-788
Author(s):  
Li Yan
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Flame Retardant ◽  
Sulfur Content ◽  
Main Chain ◽  
Decomposition Temperature ◽  
Pendant Group ◽  
Bisphenol S ◽  
Considerable Decrease ◽  
Polymer Systems

A novel polymeric phosphate flame retardant (PFR-P) was synthesized from 1-oxo-4-hydroxymethyl-2,6,7-trioxa-1-phosphbicyclo [2.2.octane (pentaerythritol phosphate, PEPA), POCl3and bisphenol S. Phosphorus was bonded both in the main chain and in the pendant group of flame-retardant polymer molecule, reached a content of 13.1%. And sulfur content was 6.75%. The thermal stability was investigated by TGA, and the results showed that the initiative decomposition temperature was 334°C with 41.1% charring residue at 500°C under air. The high phosphorus and sulfur content contributes an excellent flame retardancy to PC/ABS without a considerable decrease of mechanical properties. It is a potential flame retardant for other polymer systems.

Temperature-dependent photoluminescence from MEH-PPV and MEH-OPPV containing oxadiazole in the main chain

2006 ◽  
Vol 84 (1-2) ◽  
pp. 203-206 ◽  
Author(s):  
F. Kong ◽  
X.L. Wu ◽  
G.S. Huang ◽  
R.K. Yuan ◽  
C.Z. Yang ◽  
...  
Keyword(s):  
Main Chain ◽  
Temperature Dependent ◽  
Temperature Dependent Photoluminescence

scholarly journals Internal constraints and arrested relaxation in main-chain nematic elastomers

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Takuya Ohzono ◽  
Kaoru Katoh ◽  
Hiroyuki Minamikawa ◽  
Mohand O. Saed ◽  
Eugene M. Terentjev
Keyword(s):  
Mechanical Properties ◽  
Main Chain ◽  
Polymer Networks ◽  
Nematic Order ◽  
Nematic Elastomers ◽  
Nematic Director ◽  
Highly Nonlinear ◽  
Nonlinear Mechanical ◽  
Liquid Crystal Elastomers ◽  
Memory Applications

AbstractNematic liquid crystal elastomers (N-LCE) exhibit intriguing mechanical properties, such as reversible actuation and soft elasticity, which manifests as a wide plateau of low nearly-constant stress upon stretching. N-LCE also have a characteristically slow stress relaxation, which sometimes prevents their shape recovery. To understand how the inherent nematic order retards and arrests the equilibration, here we examine hysteretic stress-strain characteristics in a series of specifically designed main-chain N-LCE, investigating both macroscopic mechanical properties and the microscopic nematic director distribution under applied strains. The hysteretic features are attributed to the dynamics of thermodynamically unfavoured hairpins, the sharp folds on anisotropic polymer strands, the creation and transition of which are restricted by the nematic order. These findings provide a new avenue for tuning the hysteretic nature of N-LCE at both macro- and microscopic levels via different designs of polymer networks, toward materials with highly nonlinear mechanical properties and shape-memory applications.

Synthesis of polyethers containing cyclodipeptide moiety in the main chain

2001 ◽  
Vol 39 (6) ◽  
pp. 927-933 ◽  
Author(s):  
Tadayuki Kunisaki ◽  
Kimiko Kawai ◽  
Keiko Hirohata ◽  
Kazuhiro Minami ◽  
Koichi Kondo
Keyword(s):  
Main Chain

Main-Chain-Type 8-Quinolinol Polymers:  Synthesis, Optical Properties, and Complex Formation with Metals

2008 ◽  
Vol 41 (5) ◽  
pp. 1654-1662 ◽  
Author(s):  
Takayuki Iijima ◽  
Shin-ichi Kuroda ◽  
Takakazu Yamamoto
Keyword(s):  
Optical Properties ◽  
Complex Formation ◽  
Main Chain ◽  
Chain Type
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