Use of Fluorescence Spectroscopy To Study Polymeric Materials with Porous Structure Based on Imprinting by Self-Assembled Fibrillar Networks

Langmuir ◽  
2008 ◽  
Vol 24 (17) ◽  
pp. 9795-9803 ◽  
Author(s):  
M. Isabel Burguete ◽  
Francisco Galindo ◽  
Raquel Gavara ◽  
M. Angeles Izquierdo ◽  
João C. Lima ◽  
...  
Keyword(s):  
Fluorescence Spectroscopy ◽  
Porous Structure ◽  
Polymeric Materials ◽  
Self Assembled

Infrared Studies of Novel Optically Responsive Materials: Orientation Characteristics of Sulfonated Polystyrene/Poly(Diallyldimethylammonium Chloride) Ionic Polymer Multilayers on Patterned Self-Assembled Monolayers

1997 ◽  
Vol 51 (4) ◽  
pp. 470-476 ◽  
Author(s):  
Vasilis G. Gregoriou ◽  
Rick Hapanowicz ◽  
Sarah L. Clark ◽  
Paula T. Hammond
Keyword(s):  
Film Surface ◽  
Polymeric Materials ◽  
Surface Characteristics ◽  
Self Assembled Monolayers ◽  
Sulfonated Polystyrene ◽  
Responsive Materials ◽  
Diallyldimethylammonium Chloride ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
Patterned Films

Polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS) is utilized in the characterization of a new class of polymeric materials that exhibit unique optical properties. The differential nature of PM-IRRAS, coupled with the fact that the experiment was performed on a commercially available hardware setup, makes the technique ideal for studying selectively deposited polyion multilayers on metal surfaces. The system under study was a polymeric thin film of alternating bilayers of sulfonated polystyrene/poly(diallyldimethylammonium chloride) (SPS/PDAC) fabricated by ionic multilayer assembly. Specifically, patterned self-assembled monolayers (SAMs) of (Ω-functionalized alkane thiolates were used as the molecular template. Alternating layers of polyanion and polycation were then selectively adsorbed onto specific regions of the surface to form a patterned films of thicknesses from 150 to 400 Å. The total thickness of the film was measured at 150 Å with the use of ellipsometry. Polyion conformation plays a crucial role in the selectivity of the patterned film, film surface characteristics, and ultimately, the ability of these systems to function as optical devices. The infrared spectroscopic data give insight into chemical composition and conformation and show that the molecular orientation of polyions in these polymeric multilayer structures depends on the ionic content of the initial solutions.

Self‐Assembled Polymeric Materials: Design, Morphology, and Functional‐Oriented Applications

2021 ◽  
pp. 2100791
Author(s):  
Shoukui Hu ◽  
Jinhao Yan ◽  
Guangwei Yang ◽  
Chao Ma ◽  
Jun Yin
Keyword(s):  
Polymeric Materials ◽  
Materials Design ◽  
Self Assembled

scholarly journals A self-assembled cyclodextrin nanocarrier for photoreactive squaraine

2016 ◽  
Vol 12 ◽  
pp. 2535-2542 ◽  
Author(s):  
Ulrike Kauscher ◽  
Bart Jan Ravoo
Keyword(s):  
Photodynamic Therapy ◽  
Fluorescence Spectroscopy ◽  
Absorption Spectroscopy ◽  
Photochemical Activity ◽  
Oxygen Species ◽  
Significant Potential ◽  
Self Assembled

Photoreactive squaraines produce cytotoxic oxygen species under irradiation and have significant potential for photodynamic therapy. Herein we report that squaraines can be immobilized on a self-assembled nanocarrier composed of amphiphilic cyclodextrins to enhance their photochemical activity. To this end, a squaraine was equipped with two adamantane moieties that act as anchors for the cyclodextrin vesicle surface. The supramolecular immobilization was monitored by using fluorescence spectroscopy and microscopy and the photochemistry of the squaraine was investigated by using absorption spectroscopy.

scholarly journals Supramolecular exo-functionalized palladium cages: fluorescent properties and biological activity

2016 ◽  
Vol 45 (20) ◽  
pp. 8556-8565 ◽  
Author(s):  
Andrea Schmidt ◽  
Manuela Hollering ◽  
Markus Drees ◽  
Angela Casini ◽  
Fritz E. Kühn
Keyword(s):  
Biological Activity ◽  
Fluorescence Spectroscopy ◽  
Dft Calculations ◽  
Anticancer Activities ◽  
Fluorescent Properties ◽  
Emission Properties ◽  
Coordination Cages ◽  
Self Assembled

Self-assembled Pd(ii) coordination cages exhibit promising anticancer activities, while the emission properties studied by fluorescence spectroscopy and DFT calculations are limited.

Atomic force microscopy studies of microstructure and properties of self-assembled monolayers

1996 ◽  
Vol 54 ◽  
pp. 864-865
Author(s):  
J. F. Richards ◽  
E. B. Troughton ◽  
R. A. Dennis ◽  
P. E. Russell
Keyword(s):  
Atomic Force Microscopy ◽  
Single Crystal ◽  
Level Structure ◽  
Polymeric Materials ◽  
Self Assembled Monolayers ◽  
Force Microscopy ◽  
Microstructure And Properties ◽  
Atomic Force ◽  
Assembled Monolayers ◽  
Self Assembled

Self-assembled monolayers are unique structures and have received considerable attention from microscopists seeking to image the predicted molecular level structure. More recently, practical engineering applications of SAMs have been proposed in areas ranging from corrosion barriers to adhesion promoters to lithographic resists. While some of the applications of interest, most notably the lithographic resists, can be developed on substrates close to the ideal; such as single crystal Si wafers or thin epitaxial films; many others will require the coating of very non-ideal surfaces. These may range from materials such as Al or ferrous based metals to engineering polymeric materials. In this study we have taken a two-pronged approach to develop reliable systematic atomic force microscopy (AFM) techniques for the determination of both microstructure and properties of SAMs on various substrates of interest.We have chosen to investigate n-alkanethiols (SH-(CH2)n-1-CH3) on single crystal gold as our reference system for technique development.

Highly ordered self-assembled mesostructured membranes: Porous structure and pore surface coverage

2007 ◽  
Vol 103 (1-3) ◽  
pp. 113-122 ◽  
Author(s):  
Luca Malfatti ◽  
Tongjit Kidchob ◽  
Paolo Falcaro ◽  
Stefano Costacurta ◽  
Massimo Piccinini ◽  
...  
Keyword(s):  
Porous Structure ◽  
Surface Coverage ◽  
Pore Surface ◽  
Self Assembled
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