scholarly journals Yellow electrochromic polymer materials with fine tuning electrofluorescences by adjusting steric hindrance of side chains

RSC Advances ◽  
2017 ◽  
Vol 7 (41) ◽  
pp. 25444-25449 ◽  
Author(s):  
Jian Liu ◽  
Yuchen Shi ◽  
Jingchuan Wu ◽  
Mei Li ◽  
Jianming Zheng ◽  
...  
Keyword(s):  
Steric Hindrance ◽  
External Potential ◽  
Polymer Materials ◽  
Fine Tuning ◽  
Side Chains ◽  
Structure Property ◽  
Structure Property Relationships ◽  
Electrochromic Polymer

A series of novel conducting conjugated yellow-to-transmissive electrochromic (EC) polymers were designed to research their structure–property relationships, achieving electrofluorescent (EF) switching with applied external potential.

Structure-property relationships of PE/PP sandwiched films

1987 ◽  
Vol 45 ◽  
pp. 454-455
Author(s):  
J. Petermann ◽  
G. Broza ◽  
U. Rieck ◽  
A. Jaballah ◽  
A. Kawaguchi
Keyword(s):  
Mechanical Tests ◽  
Polymer Materials ◽  
Ionic Crystals ◽  
Structure Property ◽  
Polymer Systems ◽  
Structure Property Relationships ◽  
Oriented Films ◽  
Materials Used ◽  
Polymer Laminates ◽  
Heated Glass

Oriented overgrowth of polymer materials onto ionic crystals is well known and recently it was demonstrated that this epitaxial crystallisation can also occur in polymer/polymer systems, under certain conditions. The morphologies and the resulting physical properties of such systems will be presented, especially the influence of epitaxial interfaces on the adhesion of polymer laminates and the mechanical properties of epitaxially crystallized sandwiched layers.Materials used were polyethylene, PE, Lupolen 6021 DX (HDPE) and 1810 D (LDPE) from BASF AG; polypropylene, PP, (PPN) provided by Höchst AG and polybutene-1, PB-1, Vestolen BT from Chemische Werke Hüls. Thin oriented films were prepared according to the method of Petermann and Gohil, by winding up two different polymer films from two separately heated glass-plates simultaneously with the help of a motor driven cylinder. One double layer was used for TEM investigations, while about 1000 sandwiched layers were taken for mechanical tests.

Langmuir-Blodgett films of linear polysiloxanes incorporating aromatic side-chains: structure-property relationships

1994 ◽  
Vol 242 (1-2) ◽  
pp. 61-66 ◽  
Author(s):  
T. Richardson ◽  
W.H. Abd. Majid ◽  
E.C.A. Cochrane ◽  
S. Holder ◽  
D. Lacey
Keyword(s):  
Side Chains ◽  
Structure Property ◽  
Langmuir Blodgett ◽  
Structure Property Relationships ◽  
Langmuir Blodgett Films ◽  
Aromatic Side Chains

Synthesis and characterization of copolyimides containing fluorine and silicon surface-modifying agents

2017 ◽  
Vol 30 (3) ◽  
pp. 355-364
Author(s):  
John W Connell ◽  
Christopher J Wohl ◽  
Allison M Crow ◽  
William T Kim ◽  
Michelle H Shanahan ◽  
...  
Keyword(s):  
Laminar Flow ◽  
Surface Area ◽  
Surface Properties ◽  
Silicon Surface ◽  
Fuel Efficiency ◽  
Fine Tuning ◽  
Aromatic Diamine ◽  
Small Scale ◽  
Structure Property ◽  
Structure Property Relationships

Understanding the effects that monomer chemistries have on material properties allows for fine tuning of polymer synthesis for current and future applications. In order to develop polymeric-based coatings that have minimal surface adhesion characteristics when exposed to a variety of contaminants, a more thorough understanding of fundamental structure–property relationships is needed. In the aeronautics field, one concept to improve fuel efficiency of future aircraft is to modify the wing design to enable laminar flow. There is a concern that contaminants such as insect residue and other debris will adhere to airflow surfaces and have sufficient height to disrupt laminar flow thereby increasing drag with concomitant loss of fuel efficiency. One potential solution would be a polymer surface or coating that prevents or minimizes adhesion of such contaminants. As part of a structure–property relationship study involving modification of surface properties, a series of copolyimides containing both fluorine and silicon surface-modifying agents (SMAs) were prepared and characterized. Based on knowledge of structure–property relationships with polyimides containing either type of SMA, it was hypothesized that the combination of two different SMAs may lead to unique surface properties as the two SMAs competed for surface area at the polymer–air interface. Copolyimides for this study were prepared through a multistep synthesis using an aromatic dianhydride with equimolar amounts of diamino functionalities comprised of an aromatic diamine along with two SMAs. Films were cast from copoly(amide acid) solutions that were subsequently thermally imidized under a nitrogen atmosphere. Polyimide films and coatings were characterized using differential scanning calorimetry, Fourier transform infrared spectroscopy, ultraviolet–visible spectroscopy, contact angle goniometry, scanning electron microscopy, and energy-dispersive X-ray spectroscopy to determine chemical, thermal, and surface properties. Select samples were subject to high velocity insect impacts in a small-scale wind tunnel and the resulting residues were characterized for height and surface area and compared to those of a control surface.

Structure–Property Relationships in an Iridium(III) Bis(Terpyridine) Complex with Extended Conjugated Side chains

2014 ◽  
Vol 118 (51) ◽  
pp. 12137-12148 ◽  
Author(s):  
Joachim Kübel ◽  
Andreas Winter ◽  
Ulrich S. Schubert ◽  
Benjamin Dietzek
Keyword(s):  
Side Chains ◽  
Structure Property ◽  
Structure Property Relationships

scholarly journals Temperature-dependent modulation by biaryl-based monomers of the chain length and morphology of biphenyl-based supramolecular polymers

2021 ◽  
Author(s):  
E. W. Meijer ◽  
Lafayette L.N.J. De Windt ◽  
Brigitte Lamers ◽  
Elisabeth E. Weyandt ◽  
Mark Antonius Johannes Koenis ◽  
...  
Keyword(s):  
Chain Length ◽  
Functional Diversity ◽  
Polymer Materials ◽  
Supramolecular Polymers ◽  
Supramolecular Polymer ◽  
Structure Property ◽  
Temperature Dependent ◽  
Structure Property Relationships

Supramolecular copolymerizations offer attractive options to introduce structural and functional diversity in supramolecular polymer materials. Yet, general principles and structure-property relationships for rational comonomer design remain lacking. Here, we report...

Influence of Terminal Phenyl Groups on the Side Chains of Phosphazene Polymers:  Structure−Property Relationships and Polymer Electrolyte Behavior

2007 ◽  
Vol 40 (2) ◽  
pp. 322-328 ◽  
Author(s):  
Denise A. Conner ◽  
Daniel T. Welna ◽  
Youngkyu Chang ◽  
Harry R. Allcock
Keyword(s):  
Polymer Electrolyte ◽  
Side Chains ◽  
Structure Property ◽  
Structure Property Relationships

Synthesis of Self-Threading Bithiophenes and their Structure-Property Relationships Regarding Cyclic Side-Chains with Atomic Precision

2011 ◽  
Vol 7 (1) ◽  
pp. 75-84 ◽  
Author(s):  
Yuki Ouchi ◽  
Kazunori Sugiyasu ◽  
Soichiro Ogi ◽  
Akira Sato ◽  
Masayuki Takeuchi
Keyword(s):  
Side Chains ◽  
Structure Property ◽  
Structure Property Relationships ◽  
Atomic Precision
Sign in / Sign up

Export Citation Format

Share Document