Intelligent Reversible Nanoporous Antireflection Film by Solvent-Stimuli-Responsive Phase Transformation of Amphiphilic Block Copolymer

Langmuir ◽  
2012 ◽  
Vol 28 (28) ◽  
pp. 10584-10591 ◽  
Author(s):  
Xiao Li ◽  
Xinhong Yu ◽  
Yanchun Han
Polymers ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1400 ◽  
Author(s):  
Maria Chountoulesi ◽  
Natassa Pippa ◽  
Varvara Chrysostomou ◽  
Stergios Pispas ◽  
Evangelia D. Chrysina ◽  
...  

There is an emerging need to evolve the conventional lyotropic liquid crystalline nanoparticles to advanced stimuli-responsive, therapeutic nanosystems with upgraded functionality. Towards this effort, typically used stabilizers, such as Pluronics®, can be combined or replaced by smart, stimuli-responsive block copolymers. The aim of this study is to incorporate the stimuli-responsive amphiphilic block copolymer poly(2-(dimethylamino)ethyl methacrylate)-b-poly(lauryl methacrylate) (PDMAEMA-b-PLMA) as a stabilizer in lipidic liquid crystalline nanoparticles, in order to provide steric stabilization and simultaneous stimuli-responsiveness. The physicochemical and morphological characteristics of the prepared nanosystems were investigated by light scattering techniques, cryogenic-transmission electron microscopy (cryo-TEM), X-ray diffraction (XRD) and fluorescence spectroscopy. The PDMAEMA-b-PLMA, either individually or combined with Poloxamer 407, exhibited different modes of stabilization depending on the lipid used. Due to the protonation ability of PDMAEMA blocks in acidic pH, the nanoparticles exhibited high positive charge, as well as pH-responsive charge conversion, which can be exploited towards pharmaceutical applications. The ionic strength, temperature and serum proteins influenced the physicochemical behavior of the nanoparticles, while the polymer concentration differentiated their morphology; their micropolarity and microfluidity were also evaluated. The proposed liquid crystalline nanosystems can be considered as novel and attractive pH-responsive drug and gene delivery nanocarriers due to their polycationic content.


RSC Advances ◽  
2016 ◽  
Vol 6 (69) ◽  
pp. 64791-64798 ◽  
Author(s):  
JianCheng Liu ◽  
Christina Uhlir ◽  
Parag K. Shah ◽  
Fang Sun ◽  
Jeffrey W. Stansbury

RAFT polymerization was utilized to prepare an amphiphilic block copolymer containing both hydrophilic and hydrophobic segments.


2021 ◽  
Author(s):  
Shuqi Dong ◽  
Li Liu ◽  
Hanying Zhao

In this work, we synthesized oxidation-responsive amphiphilic block copolymers PEG45-b-P(MET/PBC)n bearing pendant phenylboronic ester carbamate (PBC) and thioether moieties in the hydrophobic block by RAFT polymerization and post-polymerization modification. As...


2005 ◽  
Vol 42 (3) ◽  
pp. 180-183 ◽  
Author(s):  
S. G. Schulz ◽  
U. Frieske ◽  
H. Kuhn ◽  
G. Schmid ◽  
F. Müller ◽  
...  

2010 ◽  
Vol 6 (3) ◽  
pp. 277-284 ◽  
Author(s):  
Konstantinos Gardikis ◽  
Konstantinos Dimas ◽  
Aristidis Georgopoulos ◽  
Eleni Kaditi ◽  
Stergios Pispas ◽  
...  

2009 ◽  
Vol 30 (1) ◽  
pp. 11-16 ◽  
Author(s):  
C. Rockford Craley ◽  
Rui Zhang ◽  
Tomasz Kowalewski ◽  
Richard D. McCullough ◽  
Mihaela C. Stefan

2016 ◽  
Author(s):  
Afroditi Petropoulou ◽  
Thomas J. Gibson ◽  
Efrosyni Themistou ◽  
Stergios Pispas ◽  
Christos Riziotis

Langmuir ◽  
2018 ◽  
Vol 34 (27) ◽  
pp. 8007-8014 ◽  
Author(s):  
Yuya Ishizaki ◽  
Shunsuke Yamamoto ◽  
Tokuji Miyashita ◽  
Masaya Mitsuishi

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