Thermochromic Ionogel: A New Class of Stimuli Responsive Materials with Super Cyclic Stability for Solar Modulation

Multiple lipid encased water droplets may be linked together in oil to form large networks of droplet interface bilayers thus creating a new class of stimuli-responsive materials for applications in sensing, actuation, drug delivery, and tissue engineering. While single droplet interface bilayers have been extensively studied, comparatively little is known about their interaction in large networks. One particular problem of interest is understanding the impact of the coalescence of two neighboring droplets on the overall structural integrity of the network. Here, we propose a computational modeling scheme that predicts and characterizes the mechanical properties of the multiple lipid bilayer interfaces within the droplet network upon intentional coalescence of adjacent droplets. Droplet networks with tailored architectures are synthesized with the aid of magnetic motor droplets containing a biocompatible ferrofluid. The equilibrium configuration of the droplet networks is compared to computational prediction which defines the overall stability by summing the interfacial energies. Once the networks are completed, failure in selected membranes is induced. As the targeted droplets coalesce together, the equilibrium structure of the network is altered and the remaining droplets may shift to new configurations dictated by their minimized mechanical energies.

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Amino-functional polyethers: versatile, stimuli-responsive polymers

Polymer Chemistry ◽

10.1039/d0py00466a ◽

2020 ◽

Vol 11 (24) ◽

pp. 3940-3950 ◽

Cited By ~ 2

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.

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Smart Polymers and their Applications: A Review

International Journal of Current Pharmaceutical Review and Research ◽

10.25258/ijcprr.v8i03.9220 ◽

2017 ◽

Vol 8 (03) ◽

Author(s):

Gore S. A. ◽

Gholve S. B. ◽

Savalsure S. M. ◽

Ghodake K. B. ◽

Bhusnure O. G. ◽

...

Keyword(s):

Oil Recovery ◽

Water Soluble ◽

Solution Temperature ◽

Smart Polymers ◽

Stimuli Responsive ◽

Responsive Materials ◽

Water Soluble Polymers ◽

Commercial Applications ◽

Stimuli Sensitive ◽

External Stimuli

Smart polymers are materials that respond to small external stimuli. These are also referred as stimuli responsive materials or intelligent materials. Smart polymers that can exhibit stimuli-sensitive properties are becoming important in many commercial applications. These polymers can change shape, strength and pore size based on external factors such as temperature, pH and stress. The stimuli include salt, UV irradiation, temperature, pH, magnetic or electric field, ionic factors etc. Smart polymers are very promising applicants in drug delivery, tissue engineering, cell culture, gene carriers, textile engineering, oil recovery, radioactive wastage and protein purification. The study is focused on the entire features of smart polymers and their most recent and relevant applications. Water soluble polymers with tunable lower critical solution temperature (LCST) are of increasing interest for biological applications such as cell patterning, smart drug release, DNA sequencing etc.

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Sensitive Mechanocontrolled Luminescence in Cross-Linked Polymer Films

10.26434/chemrxiv.9943943.v1 ◽

2019 ◽

Author(s):

Ayumu Karimata ◽

Pradnya Patil ◽

Eugene Khaskin ◽

Sébastien Lapointe ◽

robert fayzullin ◽

...

Keyword(s):

Mechanical Stress ◽

Polymer Films ◽

Soft Matter ◽

Small Strain ◽

Visual Methods ◽

Photoluminescence Intensity ◽

Stimuli Responsive ◽

Responsive Materials ◽

Highly Sensitive ◽

Mechanical Stretching

Direct translation of mechanical force into changes in chemical behavior on a molecular level has important implication not only for the fundamental understanding of mechanochemical processes, but also for the development of new stimuli-responsive materials. In particular, detection of mechanical stress in polymers via non-destructive methods is important in order to prevent material failure and to study the mechanical properties of soft matter. Herein, we report that highly sensitive changes in photoluminescence intensity can be observed in response to the mechanical stretching of cross-linked polymer films when using stable, (pyridinophane)Cu-based dynamic mechanophores. Upon stretching, the luminescence intensity increases in a fast and reversible manner even at small strain (< 50%) and applied stress (< 0.1 MPa) values. Such sensitivity is unprecedented when compared to previously reported systems based on organic mechanophores. The system also allows for the detection of weak mechanical stress by spectroscopic measurements or by direct visual methods.<br>

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Combining Dextran Conjugates with Stimuli-Responsive and Folate-Targeting Activity: A New Class of Multifunctional Nanoparticles for Cancer Therapy

Nanomaterials ◽

10.3390/nano11051108 ◽

2021 ◽

Vol 11 (5) ◽

pp. 1108

Author(s):

Manuela Curcio ◽

Alessandro Paolì ◽

Giuseppe Cirillo ◽

Sebastiano Di Pietro ◽

Martina Forestiero ◽

...

Keyword(s):

Cancer Therapy ◽

Drug Release ◽

Metastatic Cancer ◽

Stimuli Responsive ◽

Cancer Disease ◽

New Class ◽

Self Assembling ◽

Redox Responsive ◽

Potential Applicability ◽

Mean Size

Nanoparticles with active-targeting and stimuli-responsive behavior are a promising class of engineered materials able to recognize the site of cancer disease, targeting the drug release and limiting side effects in the healthy organs. In this work, new dual pH/redox-responsive nanoparticles with affinity for folate receptors were prepared by the combination of two amphiphilic dextran (DEX) derivatives. DEXFA conjugate was obtained by covalent coupling of the polysaccharide with folic acid (FA), whereas DEXssPEGCOOH derived from a reductive amination step of DEX was followed by condensation with polyethylene glycol 600. After self-assembling, nanoparticles with a mean size of 50 nm, able to be destabilized in acidic pH and reducing media, were obtained. Doxorubicin was loaded during the self-assembling process, and the release experiments showed the ability of the proposed system to modulate the drug release in response to different pH and redox conditions. Finally, the viability and uptake experiments on healthy (MCF-10A) and metastatic cancer (MDA-MB-231) cells proved the potential applicability of the proposed system as a new drug vector in cancer therapy.

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Redox-State Dependent Spectroscopic Properties of Porous Organic Polymers Containing Furan, Thiophene, and Selenophene

Australian Journal of Chemistry ◽

10.1071/ch17335 ◽

2017 ◽

Vol 70 (11) ◽

pp. 1227 ◽

Cited By ~ 2

Author(s):

Carol Hua ◽

Stone Woo ◽

Aditya Rawal ◽

Floriana Tuna ◽

James M. Hook ◽

...

Keyword(s):

Solid State ◽

Redox State ◽

Spectroscopic Properties ◽

Structural Features ◽

Organic Polymers ◽

Stimuli Responsive ◽

Porous Organic Polymers ◽

Paramagnetic Resonance ◽

Responsive Materials ◽

State Dependent

A series of electroactive triarylamine porous organic polymers (POPs) with furan, thiophene, and selenophene (POP-O, POP-S, and POP-Se) linkers have been synthesised and their electronic and spectroscopic properties investigated as a function of redox state. Solid state NMR provided insight into the structural features of the POPs, while in situ solid state Vis-NIR and electron paramagnetic resonance spectroelectrochemistry showed that the distinct redox states in POP-S could be reversibly accessed. The development of redox-active porous organic polymers with heterocyclic linkers affords their potential application as stimuli responsive materials in gas storage, catalysis, and as electrochromic materials.

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Shape memory polymer network with thermally distinct elasticity and plasticity

Science Advances ◽

10.1126/sciadv.1501297 ◽

2016 ◽

Vol 2 (1) ◽

pp. e1501297 ◽

Cited By ~ 232

Author(s):

Qian Zhao ◽

Weike Zou ◽

Yingwu Luo ◽

Tao Xie

Keyword(s):

Shape Memory ◽

Molecular Design ◽

Shape Change ◽

Shape Memory Polymer ◽

Polymer Network ◽

Stimuli Responsive ◽

Responsive Materials ◽

Device Applications ◽

Temperature Ranges ◽

Rational Molecular Design

Stimuli-responsive materials with sophisticated yet controllable shape-changing behaviors are highly desirable for real-world device applications. Among various shape-changing materials, the elastic nature of shape memory polymers allows fixation of temporary shapes that can recover on demand, whereas polymers with exchangeable bonds can undergo permanent shape change via plasticity. We integrate the elasticity and plasticity into a single polymer network. Rational molecular design allows these two opposite behaviors to be realized at different temperature ranges without any overlap. By exploring the cumulative nature of the plasticity, we demonstrate easy manipulation of highly complex shapes that is otherwise extremely challenging. The dynamic shape-changing behavior paves a new way for fabricating geometrically complex multifunctional devices.

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