Polarization-dependent deformation in light responsive polymers doped by dichroic dyes

Soft Matter ◽  
2019 ◽  
Vol 15 (6) ◽  
pp. 1312-1318 ◽  
Author(s):  
Daniele Martella ◽  
Sara Nocentini ◽  
Filippo Micheletti ◽  
Diederik S. Wiersma ◽  
Camilla Parmeggiani
Keyword(s):  
Polarization Dependence ◽  
Responsive Materials ◽  
Responsive Polymers

A polarization-dependence of the deformation in light-responsive materials can be induced through optimizing the dye dopant alignment.

The light-controlling of temperature-responsivity in stimuli-responsive polymers

2019 ◽  
Vol 10 (42) ◽  
pp. 5686-5720 ◽  
Author(s):  
Amin Abdollahi ◽  
Hossein Roghani-Mamaqani ◽  
Bahareh Razavi ◽  
Mehdi Salami-Kalajahi
Keyword(s):  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Stimuli Responsive ◽  
Responsive Materials ◽  
Stimuli Responsive Polymers ◽  
Responsive Polymers ◽  
Temperature Responsive ◽  
The Media ◽  
Physical And Chemical ◽  
And Chemical Properties

Light-controlling of phase separation in temperature-responsive polymer solutions by using light-responsive materials for reversible controlling physical and chemical properties of the media with an out-of-system stimulus with tunable intensity.

scholarly journals Stimuli-Responsive Materials for Tissue Engineering and Drug Delivery

2020 ◽  
Vol 21 (13) ◽  
pp. 4724 ◽  
Author(s):  
Sofia Municoy ◽  
María I. Álvarez Echazú ◽  
Pablo E. Antezana ◽  
Juan M. Galdopórpora ◽  
Christian Olivetti ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Tissue Engineering ◽  
Smart Materials ◽  
Controlled Drug Release ◽  
Stimuli Responsive ◽  
Responsive Materials ◽  
Stimuli Responsive Polymers ◽  
Responsive Polymers ◽  
Stimuli Response ◽  
Materials Used

Smart or stimuli-responsive materials are an emerging class of materials used for tissue engineering and drug delivery. A variety of stimuli (including temperature, pH, redox-state, light, and magnet fields) are being investigated for their potential to change a material’s properties, interactions, structure, and/or dimensions. The specificity of stimuli response, and ability to respond to endogenous cues inherently present in living systems provide possibilities to develop novel tissue engineering and drug delivery strategies (for example materials composed of stimuli responsive polymers that self-assemble or undergo phase transitions or morphology transformations). Herein, smart materials as controlled drug release vehicles for tissue engineering are described, highlighting their potential for the delivery of precise quantities of drugs at specific locations and times promoting the controlled repair or remodeling of tissues.

Field responsive materials: photo-, electro-, magnetic- and ultrasound-sensitive polymers

2017 ◽  
Vol 8 (1) ◽  
pp. 74-96 ◽  
Author(s):  
Theodore Manouras ◽  
Maria Vamvakaki
Keyword(s):  
Responsive Materials ◽  
Responsive Polymers ◽  
Recent Advances ◽  
Electro Magnetic

Recent advances in field-responsive polymers, which have emerged as highly promising materials for numerous applications, are highlighted.

A Review on the Synthesis and Controlled Release Properties of Novel Responsive Carrier

2014 ◽  
Vol 1002 ◽  
pp. 1-6 ◽  
Author(s):  
Xiao Min Zhu ◽  
Ting Ting Zhao ◽  
Ran Huang
Keyword(s):  
Controlled Release ◽  
State Of The Art ◽  
Controlled Drug Delivery ◽  
Stimuli Responsive ◽  
Preparation Methods ◽  
Responsive Materials ◽  
Stimuli Responsive Polymers ◽  
Responsive Polymers ◽  
Carrier Materials ◽  
Environmentally Sensitive

Interest in the stimuli-responsive polymers has been going on for decades, and a lot of work has been dedicated to the development of environmentally sensitive macromolecules that can be crafted into novel responsive carrier materials. This article reviews the state-of-the art in smart responsive carriers for controlled drug delivery applications. And the preparation methods of different responsive materials, sustained and controlled release performance are summarized. The significance and future of smart responsive materials are also commented.

scholarly journals Smart Responsive Polymers: Fundamentals and Design Principles

2020 ◽  
Vol 11 (1) ◽  
pp. 271-299 ◽  
Author(s):  
Debashish Mukherji ◽  
Carlos M. Marques ◽  
Kurt Kremer
Keyword(s):  
Mean Field ◽  
Functional Materials ◽  
Design Principles ◽  
Multiscale Simulation ◽  
Solvent Mixtures ◽  
Future Directions ◽  
Smart Polymer ◽  
Responsive Materials ◽  
Responsive Polymers ◽  
Polymer Properties

In this review, we summarize recent theoretical and computational developments in the field of smart responsive materials, together with complementary experimental data. A material is referred to as smart responsive when a slight change in external stimulus can drastically alter its structure, function, or stability. Because of this smart responsiveness, these systems are used for the design of advanced functional materials. The most characteristic properties of smart polymers are discussed, especially polymer properties in solvent mixtures. We show how multiscale simulation approaches can shed light on the intriguing experimental observations. Special emphasis is given to two symmetric phenomena: co-non-solvency and co-solvency. The first phenomenon is associated with the collapse of polymers in two miscible good solvents, whereas the latter is associated with the swelling of polymers in poor solvent mixtures. Furthermore, we discuss when the standard Flory–Huggins-type mean-field polymer theory can (or cannot) be applied to understand these complex solution properties. We also sketch a few examples to highlight possible future directions, that is, how smart polymer properties can be used for the design principles of advanced functional materials.

scholarly journals The Activation Efficiency of Mechanophores Can Be Modulated by Adjacent Polymer Composition

2020 ◽  
Author(s):  
Sourabh Kumar ◽  
Tim Stauch
Keyword(s):  
Structural Parameters ◽  
Polymer Composition ◽  
Polymer Backbone ◽  
Responsive Materials ◽  
Responsive Polymers ◽  
Quantum Chemical Methods ◽  
Mechanochemical Transformation ◽  
Activation Rate ◽  
Activation Efficiency ◽  
One Step

<div> <div> <div> <p>The activation efficiency of mechanophores in stress-responsive polymers is generally limited by the competing process of unspecific scission in other parts of the polymer chain. Here it is shown that the linker between the mechanophore and the polymer backbone determines the force needed to activate the mechanophore. Using quantum chemical methods, it is demonstrated that the activation forces of three mechanophores (Dewar benzene, benzocyclobutene and gem-dichlorocyclopropane) can be adjusted over a range of almost 300% by modifying the chemical composition of the linker. The results are discussed in terms of changes in electron density, strain distribution and structural parameters during the rupture process. Using these findings it is straightforward to either significantly enhance or reduce the activation rate of mechanophores in stress-responsive materials, depending on the desired use case. The methodology is applied to switch a one-step “gating” of a mechanochemical transformation to a two-step process. </p> </div> </div> </div>

scholarly journals The Activation Efficiency of Mechanophores Can Be Modulated by Adjacent Polymer Composition

2020 ◽  
Author(s):  
Sourabh Kumar ◽  
Tim Stauch
Keyword(s):  
Structural Parameters ◽  
Polymer Composition ◽  
Polymer Backbone ◽  
Responsive Materials ◽  
Responsive Polymers ◽  
Quantum Chemical Methods ◽  
Mechanochemical Transformation ◽  
Activation Rate ◽  
Activation Efficiency ◽  
One Step

<div> <div> <div> <p>The activation efficiency of mechanophores in stress-responsive polymers is generally limited by the competing process of unspecific scission in other parts of the polymer chain. Here it is shown that the linker between the mechanophore and the polymer backbone determines the force needed to activate the mechanophore. Using quantum chemical methods, it is demonstrated that the activation forces of three mechanophores (Dewar benzene, benzocyclobutene and gem-dichlorocyclopropane) can be adjusted over a range of almost 300% by modifying the chemical composition of the linker. The results are discussed in terms of changes in electron density, strain distribution and structural parameters during the rupture process. Using these findings it is straightforward to either significantly enhance or reduce the activation rate of mechanophores in stress-responsive materials, depending on the desired use case. The methodology is applied to switch a one-step “gating” of a mechanochemical transformation to a two-step process. </p> </div> </div> </div>

Amino-functional polyethers: versatile, stimuli-responsive polymers

2020 ◽  
Vol 11 (24) ◽  
pp. 3940-3950 ◽  
Author(s):  
Patrick Verkoyen ◽  
Holger Frey
Keyword(s):  
Ring Opening ◽  
Review Article ◽  
Stimuli Responsive ◽  
New Class ◽  
Stimuli Responsive Polymers ◽  
Responsive Polymers

Amino-functional polyethers have emerged as a new class of “smart”, i.e. pH- and thermoresponsive materials. This review article summarizes the synthesis and applications of these materials, obtained from ring-opening of suitable epoxide monomers.

Sign in / Sign up

Export Citation Format

Share Document