Colloidal star polymers: Models for studying dynamically arrested states in soft matter

2004 ◽  
Vol 42 (16) ◽  
pp. 2931-2941 ◽  
Author(s):  
Dimitris Vlassopoulos
Keyword(s):  
Soft Matter ◽  
Star Polymers

scholarly journals Application of the Eckart frame to soft matter: rotation of star polymers under shear flow

Soft Matter ◽  
2017 ◽  
Vol 13 (39) ◽  
pp. 6988-7000 ◽  
Author(s):  
Jurij Sablić ◽  
Rafael Delgado-Buscalioni ◽  
Matej Praprotnik
Keyword(s):  
Shear Flow ◽  
Soft Matter ◽  
Star Polymers ◽  
Rotating Frame ◽  
Molecular Vibrations ◽  
Matter System ◽  
Matter Rotation

We present the first ever application of the Eckart co-rotating frame to a soft matter system where molecular vibrations and rotation are coupled.

Reversible Thermal Gelation in Star Polymers:  An Alternative Route to Jamming of Soft Matter

2001 ◽  
Vol 34 (23) ◽  
pp. 8216-8223 ◽  
Author(s):  
Benoit Loppinet ◽  
Emmanuel Stiakakis ◽  
Dimitris Vlassopoulos ◽  
George Fytas ◽  
Jacques Roovers
Keyword(s):  
Soft Matter ◽  
Star Polymers ◽  
Alternative Route ◽  
Thermal Gelation

Porphyrin-functionalized coordination star polymers and their potential applications in photodynamic therapy

2019 ◽  
Vol 10 (45) ◽  
pp. 6116-6121 ◽  
Author(s):  
Tan Ji ◽  
Lei Xia ◽  
Wei Zheng ◽  
Guang-Qiang Yin ◽  
Tao Yue ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Self Assembly ◽  
Star Polymers ◽  
New Family ◽  
Potential Applications

We present a new family of porphyrin-functionalized coordination star polymers prepared through combination of coordination-driven self-assembly and post-assembly polymerization. Their self-assembly behaviour in water and potential for photodynamic therapy were demonstrated.

Allosteric regulation of GPCR Rhodopsin by soft matter

2020 ◽  
Author(s):  
Nipuna Weerasinghe ◽  
Steven Fried ◽  
Anna Eitel ◽  
Andrey Struts ◽  
Suchithranga Perera ◽  
...  
Keyword(s):  
Soft Matter ◽  
Allosteric Regulation

Natural Killer Cell Inspired AIE Nanoterminator for Blood-Brain-Barrier Crossing via Tight-Junction Modulation and NIR-II Gliomas Theranostics

2020 ◽  
Author(s):  
Guanjun Deng ◽  
Xinghua Peng ◽  
Zhihong Sun ◽  
Wei Zheng ◽  
Jia Yu ◽  
...  
Keyword(s):  
Natural Killer Cell ◽  
Natural Killer ◽  
Intracellular Signaling ◽  
Soft Matter ◽  
Tumor Imaging ◽  
Nk Cell ◽  
Killer Cell ◽  
Light Illumination ◽  
Blood Brain ◽  
Intracellular Signaling Cascade

Nature has always inspired robotic designs and concepts. It is conceivable that biomimic nanorobots will soon play a prominent role in medicine. In this paper, we developed a natural killer cell-mimic AIE nanoterminator (NK@AIEdots) by coating natural kill cell membrane on the AIE-active polymeric endoskeleton, PBPTV, a highly bright NIR-II AIE-active conjugated polymer. Owning to the AIE and soft-matter characteristics of PBPTV, as-prepared nanoterminator maintained the superior NIR-II brightness (quantum yield ~8%) and good biocompatibility. Besides, they could serve as tight junctions (TJs) modulator to trigger an intracellular signaling cascade, causing TJs disruption and actin cytoskeleton reorganization to form intercellular “green channel” to help themselves crossing Blood-Brain Barriers (BBB) silently. Furthermore, they could initiatively accumulate to glioblastoma cells in the complex brain matrix for high-contrast and through-skull tumor imaging. The tumor growth was also greatly inhibited by these nanoterminator under the NIR light illumination. As far as we known, The QY of PBPTV is the highest among the existing NIR-II luminescent conjugated polymers. Besides, the NK-cell biomimetic nanorobots will open new avenue for BBB-crossing delivery.

Self-Immolative Bottlebrush Polypentenamers and their Macromolecular Metamorphosis

2019 ◽  
Author(s):  
William Neary ◽  
Justin Kennemur
Keyword(s):  
Star Polymers ◽  
End To End

The complete depolymerization of a polypentenamer bottlebrush backbone and the kinetic principles involved are discussed. The deconstruction of the bottlebrush occurs from end-to-end in a self-immolative fashion producing individual linear grafts. The phenomenon paints a clearer picture on the original bottlebrush design. Architecture transformations from bottlebrush to linear to star polymers through facile means is explored.<br>

Sensitive Mechanocontrolled Luminescence in Cross-Linked Polymer Films

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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