A Comparative Study of the Structure/Property Relationships of Langmuir-Blodgett and Spin-Cast Films of an Amphiphilic, Regioregular Polythiophene Polymer

2006 ◽  
Vol 949 ◽  
Author(s):  
Jusroop Mattu ◽  
Thomas Johansson ◽  
Steven Holdcroft ◽  
Gary W. Leach
Keyword(s):  
Thin Films ◽  
Comparative Study ◽  
Conjugated Polymer ◽  
Structure Property ◽  
Materials Properties ◽  
Langmuir Blodgett ◽  
Thermal Reactivity ◽  
Structure Property Relationships ◽  
Structural Conformation ◽  
Cast Films

ABSTRACTThe effects of structural conformation and order on materials properties and reactivity in thin films of an amphiphilic, regioregular polythiophene π-conjugated polymer (πCP) derivative are presented. Thin films deposited by the Langmuir Blodgett technique provide highly ordered anisotropic films compared to those deposited by spin cast methods. Large differences in both the thermal reactivity and physical properties of the films are observed.

scholarly journals Synthesis and structure–property relationships of phthalimide and naphthalimide based organic π-conjugated small molecules

2016 ◽  
Vol 18 (21) ◽  
pp. 14709-14719 ◽  
Author(s):  
Abby-Jo Payne ◽  
Arthur D. Hendsbee ◽  
Seth M. McAfee ◽  
Devproshad K. Paul ◽  
Kunal Karan ◽  
...  
Keyword(s):  
Thin Films ◽  
Small Molecules ◽  
Chain Length ◽  
Side Chain ◽  
Structure Property ◽  
Side Chain Length ◽  
Materials Properties ◽  
Structure Property Relationships ◽  
And Topology ◽  
The Impact

Six organic π-conjugated small molecules with a bithiophene core and aryl imide terminal units are reported. The impact of alky side chain length and topology, and aryl imide size on materials properties in solution and as thin-films was investigated.

scholarly journals Expanding Monomers as Anti-Shrinkage Additives

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 806
Author(s):  
Philipp Marx ◽  
Frank Wiesbrock
Keyword(s):  
Ring Opening ◽  
Covalent Bond ◽  
Volumetric Shrinkage ◽  
Structure Property ◽  
Atomic Packing ◽  
Materials Properties ◽  
Volumetric Expansion ◽  
Structure Property Relationships ◽  
Ring Opening Reaction ◽  
Measuring Techniques

Commonly, volumetric shrinkage occurs during polymerizations due to the shortening of the equilibrium Van der Waals distance of two molecules to the length of a (significantly shorter) covalent bond. This volumetric shrinkage can have severe influence on the materials’ properties. One strategy to overcome this volumetric shrinkage is the use of expanding monomers that show volumetric expansion during polymerization reactions. Such monomers exhibit cyclic or even oligocyclic structural motifs with a correspondingly dense atomic packing. During the ring-opening reaction of such monomers, linear structures with atomic packing of lower density are formed, which results in volumetric expansion or at least reduced volumetric shrinkage. This review provides a concise overview of expanding monomers with a focus on the elucidation of structure-property relationships. Preceded by a brief introduction of measuring techniques for the quantification of volumetric changes, the most prominent classes of expanding monomers will be presented and discussed, namely cycloalkanes and cycloalkenes, oxacycles, benzoxazines, as well as thiocyclic compounds. Spiroorthoesters, spiroorthocarbonates, cyclic carbonates, and benzoxazines are particularly highlighted.

scholarly journals Structure—Property Relationships in Sol—Gel-Derived Thin Films

1994 ◽  
pp. 104-121 ◽  
Author(s):  
C. J. Brinker ◽  
N. K. Raman ◽  
M. N. Logan ◽  
R. Sehgal ◽  
R. A. Assink ◽  
...  
Keyword(s):  
Thin Films ◽  
Sol Gel ◽  
Structure Property ◽  
Structure Property Relationships

Structure–property relationships of PCGTA welds of Inconel X750 in as-welded and post-weld heat treated conditions—A comparative study

2015 ◽  
Vol 20 ◽  
pp. 1-14 ◽  
Author(s):  
K. Devendranath Ramkumar ◽  
S. Rahul Krishnan ◽  
R. Ramanand ◽  
S. Logesh ◽  
Tushar Satyandas ◽  
...  
Keyword(s):  
Comparative Study ◽  
Structure Property ◽  
Structure Property Relationships ◽  
Heat Treated ◽  
Inconel X750 ◽  
Weld Heat

Development of Structure-Property Relationships in Disordered Zirconia Thin Films for High Energy Density Mim Capacitors

2006 ◽  
Vol 969 ◽  
Author(s):  
Guneet Sethi ◽  
Michael T. Lanagan ◽  
Eugene Furman ◽  
Mark W. Horn
Keyword(s):  
Thin Films ◽  
High Energy ◽  
Dc Conductivity ◽  
High Energy Density ◽  
Dielectric Films ◽  
Structure Property ◽  
Gate Oxides ◽  
Low Frequencies ◽  
Structure Property Relationships ◽  
Mim Capacitors

AbstractAmorphous zirconium oxide thin films were prepared by reactive magnetron sputtering. The dielectric films were characterized by impedance spectroscopy with temperature. The effect of annealing on capacitor performance was studied. Annealing gold electroded thin films at 250°C greatly reduced the losses with little changes in crystallinity. Space charge relaxation started to appear at 190°C. The activation energy for the relaxation was 0.84 eV with a very low relaxation frequency at room temperature (0.23μHz). Electrode effects dominated at very low frequencies at all temperatures. AC conductivity followed the universality behavior for the AC charge transport showing that the films are highly disordered. No DC conductivity regime was observed indicating that DC conductivity is very low. DC conductivity of the films was of the order of 10−13 S/m, which is lesser than the comparable thickness high quality gate oxides.

scholarly journals Structure-property relationships for Eu doped TiO2 thin films grown by a laser assisted technique from colloidal sols

RSC Advances ◽  
2017 ◽  
Vol 7 (60) ◽  
pp. 37643-37653 ◽  
Author(s):  
I. Camps ◽  
M. Borlaf ◽  
M. T. Colomer ◽  
R. Moreno ◽  
L. Duta ◽  
...  
Keyword(s):  
Thin Films ◽  
Structure Property ◽  
Tio2 Thin Films ◽  
Doped Tio2 ◽  
Structure Property Relationships

Highly photoluminescent Eu doped TiO2 layers prepared by laser-based technique from colloidal sols.

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