Effects of solvent, film thickness, and hydrogen bonding on surface-relief gratings

2009 ◽  
Vol 49 (5) ◽  
pp. 922-929 ◽  
Author(s):  
Woo-Hyuk Jung ◽  
Ki-Tae Lee ◽  
Dong-Han Lee ◽  
Sang-Cheol Han ◽  
Yang Kim ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Film Thickness ◽  
Surface Relief ◽  
Surface Relief Gratings

Effect of Solvent, Hydrogen Bonding, and thickness of Azopolymer Films on Surface Relief Grating

2005 ◽  
Vol 889 ◽  
Author(s):  
Woo-Hyuk Jung ◽  
Dong-Yu Kim ◽  
Jayant Kumar ◽  
Stephen P. McCarthy
Keyword(s):  
Hydrogen Bonding ◽  
Surface Relief ◽  
Laser Intensity ◽  
Diglycidyl Ether ◽  
Hydroxyl Groups ◽  
Coupling Reactions ◽  
Azo Coupling ◽  
Effect Of Solvent ◽  
Diffractive Efficiency ◽  
Surface Relief Gratings

ABSTRACTEpoxy-based copolymers were synthesized with N,N-diglycidyl aniline (DGA) and aniline (An), called poly(DGA-co-An), where azo coupling reactions were performed using amino benzonitrile (ABN) and nitro aniline (NA). Two azopolymers were dissolved with both tetrahydrofuran (THF)/dioxane complex solvent and THF to compare the diffraction efficiencies according to solvent. The thin films spin-cast with THF/dioxane showed the better diffractive efficiency than with THF due to the high boil point of the residual dioxane. The azopolymers of two azo bonds were spin-coated at 800 and 1300 rpm where the thicker film showed the better diffractive efficiency. The epoxy-based copolymers synthesized with diglycidyl ether of bisphenol A (DGEBA) and aniline (An) or 3-hydroxyl aniline (HAn) were coupled with hydroxyl nitro amino benzene (HNAB). Hydroxyl groups in chromophores helped to form hydrogen bonding with the nitrogen atoms in the azo bonds and prevented photoisomerization, showing no surface relief gratings under a normal laser intensity of 100 mW/cm2. Polyurethane-based azopolymers were synthesized with disperse orange 17 (DO17) and toluene-2,4-diisocyanate (TDI), which were no hydroxide groups in the main chains, and showed the better diffractive efficiency than the epoxy-based azopolymers with nitro substituents.

Stimuli-responsive supramolecular materials: photo-tunable properties and molecular recognition behavior

2016 ◽  
Vol 7 (4) ◽  
pp. 795-806 ◽  
Author(s):  
Cheng-Wei Huang ◽  
Pei-Wei Wu ◽  
Wei-Hung Su ◽  
Chao-Yuan Zhu ◽  
Shiao-Wei Kuo
Keyword(s):  
Hydrogen Bonding ◽  
Molecular Recognition ◽  
Surface Relief ◽  
Supramolecular System ◽  
Stimuli Responsive ◽  
Supramolecular Materials ◽  
Laser Illumination ◽  
Tunable Properties ◽  
Responsive Behavior ◽  
Surface Relief Gratings

A supramolecular system stabilized through complementary hydrogen bonding and displaying stimuli-responsive behavior has been fabricated into “recordable” and “rewritable” surface relief gratings operated under laser illumination.

The Role of Azopolymer/Dendrimer Layer-by-Layer Film Architecture in Photoinduced Birefringence and the Formation of Surface-Relief Gratings

Langmuir ◽  
2006 ◽  
Vol 22 (14) ◽  
pp. 6177-6180 ◽  
Author(s):  
David S. dos Santos, ◽  
Marcos R. Cardoso ◽  
Fabio L. Leite ◽  
Ricardo F. Aroca ◽  
Luiz H. C. Mattoso ◽  
...  
Keyword(s):  
Surface Relief ◽  
Layer By Layer ◽  
Layer Film ◽  
Photoinduced Birefringence ◽  
Surface Relief Gratings

scholarly journals Fabrication of switchable liquid crystal devices using surface relief gratings in photopolymer

2007 ◽  
Vol 20 (S1) ◽  
pp. 198-201 ◽  
Author(s):  
Pavani Kotakonda ◽  
Izabela Naydenova ◽  
Robert Howard ◽  
Suzanne Martin ◽  
Vincent Toal
Keyword(s):  
Liquid Crystal ◽  
Surface Relief ◽  
Liquid Crystal Devices ◽  
Surface Relief Gratings

Surface relief gratings generated by pulsed holography: A simple way to polymer nanostructures without isomerizing side-chains

2001 ◽  
Vol 114 (3) ◽  
pp. 1344-1349 ◽  
Author(s):  
O. Baldus ◽  
A. Leopold ◽  
R. Hagen ◽  
T. Bieringer ◽  
S. J. Zilker
Keyword(s):  
Surface Relief ◽  
Side Chains ◽  
Polymer Nanostructures ◽  
Surface Relief Gratings
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