Photo-responsive systems and biomaterials: photochromic polymers, light-triggered self-assembly, surface modification, fluorescence modulation and beyond

2010 ◽  
Vol 1 (1) ◽  
pp. 37-54 ◽  
Author(s):  
Francesca Ercole ◽  
Thomas P. Davis ◽  
Richard A. Evans
Keyword(s):  
Surface Modification ◽  
Self Assembly ◽  
Responsive Systems ◽  
Fluorescence Modulation ◽  
Photochromic Polymers

scholarly journals Surface modification and adhesion improvement of polyester films

2013 ◽  
Vol 11 (1) ◽  
pp. 35-45 ◽  
Author(s):  
Aniello Cammarano ◽  
Giovanna Luca ◽  
Eugenio Amendola
Keyword(s):  
Free Energy ◽  
Surface Modification ◽  
Surface Free Energy ◽  
Self Assembly ◽  
Treatment Time ◽  
Solution Treatment ◽  
Film Surface ◽  
Critical Surface ◽  
Hydrolysis Time ◽  
Critical Surface Tension

AbstractFacile surface modification of polyester films was performed via chemical solutions treatment. Surface hydrolysis was carried out by means of sodium hydroxide solutions, leading to the formation of carboxylate groups. Three commercial polyester films of 100 μm in thickness were used in this work: AryLite™, Mylar™, and Teonex™, hydrolysis time being the main modification parameter. FTIR-ATR analysis, topography and contact angle (CA) measurements, surface free energy (SFE) and T-Peel adhesion tests were carried out to characterize the modified films. A quantitative estimate of the carboxylates surface coverage as a function of treatment time was obtained through a supramolecular approach, i.e. the ionic self-assembly of a tetracationic porphyrin chromophore onto the film surface. The surface free energy and critical surface tension of the hydrolyzed polyesters was evaluated by means of Zisman, Saito, Berthelot and Owens-Wendt methods. It was shown that NaOH solution treatment increases roughness, polarity and surface free energy of polymers. As a result, T-Peel strengths for modified Mylar™ and Teonex™ films were respectively 2.2 and 1.8 times higher than that for the unmodified films, whereas AryLite™ adhesion test failed.

scholarly journals Organic surface modification and analysis of titania nanoparticles for self‐assembly in multiple layers

2020 ◽  
Vol 52 (12) ◽  
pp. 829-834
Author(s):  
Vasile‐Dan Hodoroaba ◽  
Steffi Rades ◽  
Patrizia Borghetti ◽  
Erik Ortel ◽  
Thomas Wirth ◽  
...  
Keyword(s):  
Surface Modification ◽  
Self Assembly ◽  
Titania Nanoparticles

Enhanced self-assembly of block copolymers by surface modification of a guiding template

2017 ◽  
Vol 50 (2) ◽  
pp. 221-229
Author(s):  
Woon Ik Park ◽  
Young Joong Choi ◽  
Jong Min Yuk ◽  
Hyeon Kook Seo ◽  
Kwang Ho Kim
Keyword(s):  
Surface Modification ◽  
Block Copolymers ◽  
Self Assembly
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