Aromatic vapor responsive molecular packing rearrangement in supramolecular gels

2020 ◽  
Vol 4 (8) ◽  
pp. 2452-2461 ◽  
Author(s):  
Qiuhong Cheng ◽  
Zhuoer Wang ◽  
Aiyou Hao ◽  
Pengyao Xing ◽  
Yanli Zhao
Keyword(s):  
Molecular Packing ◽  
Crystal Transformation ◽  
Supramolecular Gels ◽  
Hydrogel Composites ◽  
Responsive Hydrogels

Aromatic vapor responsive hydrogels are prepared by crystal transformation of commercially available β-cyclodextrin (β-CD). Hydrogel composites coassembled by clay with β-CD show haze evolution toward aromatic vapor under heating–cooling treatment.

Molecular packing, crystal to crystal transformation, electron transfer behaviour, and photochromic and fluorescent properties of three hydrogen-bonded supramolecular complexes containing benzenecarboxylate donors and viologen acceptors

RSC Advances ◽  
2014 ◽  
Vol 4 (81) ◽  
pp. 42983-42990 ◽  
Author(s):  
Hengjun Chen ◽  
Min Li ◽  
Guiming Zheng ◽  
Yifang Wang ◽  
Yang Song ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Molecular Packing ◽  
Supramolecular Complexes ◽  
Supramolecular Systems ◽  
Fluorescent Properties ◽  
Crystal Transformation ◽  
Hydrogen Bonded

Structures of three D–A supramolecular systems and their photoresponsive characteristics are investigated.

Thermally induced 1D to 2D polymer conversion accompanied by major packing changes in single-crystal-to-single-crystal transformation

CrystEngComm ◽  
2018 ◽  
Vol 20 (17) ◽  
pp. 2346-2350 ◽  
Author(s):  
Ashutosh S. Singh ◽  
Amjad Ali ◽  
Ranjay K. Tiwari ◽  
Jogendra N. Behera ◽  
Shih-Sheng Sun ◽  
...  
Keyword(s):  
Single Crystal ◽  
Molecular Packing ◽  
Thermally Induced ◽  
Crystal Transformation ◽  
Polymer Formation ◽  
Highly Sensitive ◽  
Temperature And Pressure ◽  
Polymer Conversion ◽  
2D Polymer

The molecular packing in crystals is highly sensitive to temperature and pressure. We report a thermally-induced H-bonded 1D → 2D polymer formation via SCSCT.

Sticky ends in a self-assembling ABA triblock copolymer: the role of ureas in stimuli-responsive hydrogels

2019 ◽  
Vol 4 (1) ◽  
pp. 91-102 ◽  
Author(s):  
Ryan T. Shafranek ◽  
Joel D. Leger ◽  
Song Zhang ◽  
Munira Khalil ◽  
Xiaodan Gu ◽  
...  
Keyword(s):  
Self Assembly ◽  
Viscoelastic Properties ◽  
Triblock Copolymer ◽  
Thermal Response ◽  
Stimuli Responsive ◽  
Self Assembling ◽  
Polymeric Hydrogels ◽  
Aba Triblock Copolymer ◽  
Responsive Hydrogels

Directed self-assembly in polymeric hydrogels allows tunability of thermal response and viscoelastic properties.

Single crystal to single crystal transformation of spin-crossover coordination polymers from 3D frameworks to 2D layers

2021 ◽  
Vol 9 (15) ◽  
pp. 5082-5087
Author(s):  
Yu Gong ◽  
Wang-Kang Han ◽  
Hui-Shu Lu ◽  
Qing-Tao Hu ◽  
Huan Tu ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Single Crystal ◽  
Coordination Polymers ◽  
Ligand Exchange ◽  
Spin Crossover ◽  
Metal Organic Frameworks ◽  
Crystal Transformation ◽  
Metal Organic

New Hofmann-type metal–organic frameworks display rare and complete ligand exchange induced single crystal to single crystal transformations from 3D frameworks to 2D layers, accompanied by magnetic properties transition from two-step SCO behavior to hysteretic SCO behavior.

scholarly journals Recent Advances in Fiber–Hydrogel Composites for Wound Healing and Drug Delivery Systems

Antibiotics ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 248
Author(s):  
Marta O. Teixeira ◽  
Joana C. Antunes ◽  
Helena P. Felgueiras
Keyword(s):  
Drug Delivery ◽  
Wound Healing ◽  
Mechanical Stability ◽  
Fiber Spinning ◽  
Comprehensive Overview ◽  
Triggered Drug Release ◽  
Medicinal Properties ◽  
Hydrogel Composites ◽  
Drug Incorporation ◽  
Stimuli Sensitive

In the last decades, much research has been done to fasten wound healing and target-direct drug delivery. Hydrogel-based scaffolds have been a recurrent solution in both cases, with some reaching already the market, even though their mechanical stability remains a challenge. To overcome this limitation, reinforcement of hydrogels with fibers has been explored. The structural resemblance of fiber–hydrogel composites to natural tissues has been a driving force for the optimization and exploration of these systems in biomedicine. Indeed, the combination of hydrogel-forming techniques and fiber spinning approaches has been crucial in the development of scaffolding systems with improved mechanical strength and medicinal properties. In this review, a comprehensive overview of the recently developed fiber–hydrogel composite strategies for wound healing and drug delivery is provided. The methodologies employed in fiber and hydrogel formation are also highlighted, together with the most compatible polymer combinations, as well as drug incorporation approaches creating stimuli-sensitive and triggered drug release towards an enhanced host response.

Bolaamphiphile-based supramolecular gels with drugs eliciting membrane effects

2021 ◽  
Author(s):  
Laurent Latxague ◽  
Sébastien Benizri ◽  
Alexandra Gaubert ◽  
James Tolchard ◽  
Denis Martinez ◽  
...  
Keyword(s):  
Supramolecular Gels ◽  
Membrane Effects

scholarly journals Graphene Integrated Hydrogels Based Biomaterials in Photothermal Biomedicine

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 906
Author(s):  
Le Minh Tu Phan ◽  
Thuy Anh Thu Vo ◽  
Thi Xoan Hoang ◽  
Sungbo Cho
Keyword(s):  
Photothermal Therapy ◽  
Biomedical Applications ◽  
High Light ◽  
Conversion Materials ◽  
Potential Applications ◽  
Good Biocompatibility ◽  
Biomedical Field ◽  
Hydrogel Composites ◽  
Material Fabrication ◽  
Biomedical Fields

Recently, photothermal therapy (PTT) has emerged as one of the most promising biomedical strategies for different areas in the biomedical field owing to its superior advantages, such as being noninvasive, target-specific and having fewer side effects. Graphene-based hydrogels (GGels), which have excellent mechanical and optical properties, high light-to-heat conversion efficiency and good biocompatibility, have been intensively exploited as potential photothermal conversion materials. This comprehensive review summarizes the current development of graphene-integrated hydrogel composites and their application in photothermal biomedicine. The latest advances in the synthesis strategies, unique properties and potential applications of photothermal-responsive GGel nanocomposites in biomedical fields are introduced in detail. This review aims to provide a better understanding of the current progress in GGel material fabrication, photothermal properties and potential PTT-based biomedical applications, thereby aiding in more research efforts to facilitate the further advancement of photothermal biomedicine.

scholarly journals Solid-State Conformational Flexibility at Work: Energetic Landscape of a Single Crystal-to-Single Crystal Transformation in a Cyclic Hexapeptoid

2021 ◽  
Vol 21 (2) ◽  
pp. 897-907
Author(s):  
Giovanni Pierri ◽  
Marta Corno ◽  
Eleonora Macedi ◽  
Maria Voccia ◽  
Consiglia Tedesco
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
Conformational Flexibility ◽  
Crystal Transformation
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