Determination of Degree of Ionization of Poly (allylamine hydrochloride)(PAH) and Poly [1-[4-(3-carboxy-4 hydroxyphenylazo) benzene sulfonamido]-1, 2-ethanediyl …

Q Ferreira, PJ Gomes, PA Ribeiro, NC Jones… - Langmuir, 2013 - ACS Publications
Electrostatic and hydrophobic interactions govern most of the properties of supramolecular
systems, which is the reason determining the degree of ionization of macromolecules has …

Influence of ionic interactions on the photoinduced birefringence of poly [1-[4-(3-Carboxy-4 Hydroxyphenylazo) benzene sulfonamido]-1, 2-ethanediyl, sodium salt] …

Q Ferreira, PJ Gomes, M Raposo… - … of nanoscience and …, 2007 - ingentaconnect.com
Electrostatic interactions govern most properties of polyelectrolyte films, as in the
photoinduced birefringence of azo-containing polymers. In this paper we report a systematic …

Dual-beam polarization interferometry resolves mechanistic aspects of polyelectrolyte adsorption

TJ Lane, WR Fletcher, MV Gormally, MS Johal - Langmuir, 2008 - ACS Publications
The electrostatically driven binding dynamics of a polyelectrolyte multilayer (PEMU) film was
investigated in real-time using dual-beam polarization interferometry (DPI) and …

[HTML][HTML] Nano-molar deltamethrin sensor based on electrical impedance of PAH/PAZO layer-by-layer sensing films

LMG Abegão, JHF Ribeiro, PA Ribeiro, M Raposo - Sensors, 2013 - mdpi.com
This work reports a novel deltamethrin (DM) sensor able to detect nano-molar
concentrations in ethanol solutions. The sensing layer consists of a thin film, obtained via a …

Adsorption kinetics of DPPG liposome layers: A quantitative analysis of surface roughness

AA Duarte, SL Filipe, LMG Abegão… - Microscopy and …, 2013 - academic.oup.com
Roughness of a positively charged poly (allylamine hydrochloride)(PAH) polyelectrolyte
surface was shown to strongly influence the adsorption of 1.2-dipalmitoyl-sn-3-glycero …

Mechanisms of adsorption of an azo-polyelectrolyte onto layer-by-layer films

Q Ferreira, PJ Gomes, MJP Maneira, PA Ribeiro… - Sensors and Actuators B …, 2007 - Elsevier
The mechanisms which lead to the adsorption of the azopolyelectrolyte poly [1-[4-(3-carboxy-
4-hydroxyphenylazo) benzene sulfonamido]-1, 2-ethanediyl, sodium salt](PAZO) layer …

Birefringence dynamics of poly {1-[4-(3-carboxy-4-hydroxyphenylazo) benzenesulfonamido]-1, 2-ethanediyl, sodium salt} cast films

C Madruga, P Alliprandini Filho, MM Andrade… - Thin Solid Films, 2011 - Elsevier
Photoinduced birefringence creation/decay dynamics in poly {1-[4-(3-carboxy-4-
hydroxyphenylazo) benzenesulfonamido]-1, 2-ethanediyl, sodium salt} cast films, has been …

Villain's fractal growth of poly [1-[4-(3-carboxy-4-hydroxyphenylazo) benzenesulfonamido]-1, 2-ethanediyl, sodium salt] J-aggregates onto layer-by-layer films and its …

Q Ferreira, P António Ribeiro, M Raposo - Journal of Applied Physics, 2013 - pubs.aip.org
Morphology of poly (allylamine hydrochloride) and poly [1-[4-(3-carboxy-4-
hydroxyphenylazo) benzenesulfonamido]-1, 2-ethanediyl, sodium salt](PAZO) layer-by-layer …

Imaging and quantitative data acquisition of biological cell walls with atomic force microscopy and scanning acoustic microscopy

BR Tittmann, X Xi - 2014 - osti.gov
This chapter demonstrates the feasibility of Atomic Force Microscopy (AFM) and High
Frequency Scanning Acoustic Microscopy (HF-SAM) as tools to characterize biological …

Environmental Sensitivity of Fabry-Perot Microcavities Induced by Layered Graphene-Dielectric Hybrid Coatings

R Peixoto, JPS Pires, CS Monteiro, M Raposo… - Physical Review …, 2021 - APS
We propose a fiber-based environmental sensor that exploits the reflection-phase-shift
tunability provided by the use of layered coatings composed of dielectric slabs spaced by …