Hyaluronan/Ru(ii)-cyclodextrin supramolecular assemblies for colorimetric sensor of hyaluronidase activity

RSC Advances ◽  
2015 ◽  
Vol 5 (120) ◽  
pp. 99240-99244
Author(s):  
Ping Hu ◽  
Yong Chen ◽  
Yu Liu
Keyword(s):  
Supramolecular Assembly ◽  
Colorimetric Sensor ◽  
Supramolecular Assemblies ◽  
Hyaluronidase Activity ◽  
532 Nm

A hyaluronidase-induced colorimetric change was found in a hyaluronan/Ru(ii)-cyclodextrin supramolecular assembly under a laser (532 nm) irradiation.

scholarly journals Star-shaped tetrathiafulvalene oligomers towards the construction of conducting supramolecular assembly

2015 ◽  
Vol 11 ◽  
pp. 1596-1613 ◽  
Author(s):  
Masahiko Iyoda ◽  
Masashi Hasegawa
Keyword(s):  
Mixed Valence ◽  
Supramolecular Assembly ◽  
Radical Cations ◽  
Supramolecular Assemblies ◽  
Supramolecular Structures ◽  
Oxidation States ◽  
Face To Face ◽  
Redox Active ◽  
Nanophase Separation ◽  
Self Organizing

The construction of redox-active supramolecular assemblies based on star-shaped and radially expanded tetrathiafulvalene (TTF) oligomers with divergent and extended conjugation is summarized. Star-shaped TTF oligomers easily self-aggregate with a nanophase separation to produce supramolecular structures, and their TTF units stack face-to-face to form columnar structures using the fastener effect. Based on redox-active self-organizing supramolecular structures, conducting nanoobjects are constructed by doping of TTF oligomers with oxidants after the formation of such nanostructures. Although radical cations derived from TTF oligomers strongly interact in solution to produce a mixed-valence dimer and π-dimer, it seems to be difficult to produce nanoobjects of radical cations different from those of neutral TTF oligomers. In some cases, however, radical cations form nanostructured fibers and rods by controlling the supramolecular assembly, oxidation states, and counter anions employed.

Strong circularly polarized luminescence induced from chiral supramolecular assembly of helical nanorods

2017 ◽  
Vol 53 (54) ◽  
pp. 7505-7508 ◽  
Author(s):  
Yuxiang Wang ◽  
Xiaojing Li ◽  
Fei Li ◽  
Wei-Yin Sun ◽  
Chengjian Zhu ◽  
...  
Keyword(s):  
Supramolecular Assembly ◽  
Supramolecular Assemblies ◽  
Stacking Interactions ◽  
Circularly Polarized ◽  
Π Stacking ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

Chiral supramolecular assemblies (BNS–BPP) can exhibit circularly polarized luminescence (CPL) via electrostatic and π–π stacking interactions.

scholarly journals Light-fueled transient supramolecular assemblies in water as fluorescence modulators

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xu-Man Chen ◽  
Xiao-Fang Hou ◽  
Hari Krishna Bisoyi ◽  
Wei-Jie Feng ◽  
Qin Cao ◽  
...  
Keyword(s):  
Self Assembly ◽  
Thermal Dissociation ◽  
Hepatocellular Cancer ◽  
Supramolecular Assembly ◽  
Supramolecular Assemblies ◽  
Light Power ◽  
Highly Sensitive ◽  
Supramolecular Nanoparticles ◽  
Far From Equilibrium ◽  
Over Time

AbstractDissipative self-assembly, which requires a continuous supply of fuel to maintain the assembled states far from equilibrium, is the foundation of biological systems. Among a variety of fuels, light, the original fuel of natural dissipative self-assembly, is fundamentally important but remains a challenge to introduce into artificial dissipative self-assemblies. Here, we report an artificial dissipative self-assembly system that is constructed from light-induced amphiphiles. Such dissipative supramolecular assembly is easily performed using protonated sulfonato-merocyanine and chitosan based molecular and macromolecular components in water. Light irradiation induces the assembly of supramolecular nanoparticles, which spontaneously disassemble in the dark due to thermal back relaxation of the molecular switch. Owing to the presence of light-induced amphiphiles and the thermal dissociation mechanism, the lifetimes of these transient supramolecular nanoparticles are highly sensitive to temperature and light power and range from several minutes to hours. By incorporating various fluorophores into transient supramolecular nanoparticles, the processes of aggregation-induced emission and aggregation-caused quenching, along with periodic variations in fluorescent color over time, have been demonstrated. Transient supramolecular assemblies, which act as fluorescence modulators, can also function in human hepatocellular cancer cells.

Photocontrolled reversible conversion of a lamellar supramolecular assembly based on cucurbiturils and a naphthalenediimide derivative

2018 ◽  
Vol 54 (96) ◽  
pp. 13591-13594 ◽  
Author(s):  
Cai-Cai Zhang ◽  
Ying-Ming Zhang ◽  
Yu Liu
Keyword(s):  
Supramolecular Assembly ◽  
Supramolecular Assemblies

Lamellar and helical supramolecular assemblies were constructed using cucurbiturils and a naphthalenediimide derivative. The formation of the lamellar assembly could be reversibly photocontrolled.

Controlled chiral supramolecular assemblies of water soluble achiral porphyrins induced by chiral counterions

2016 ◽  
Vol 52 (67) ◽  
pp. 10253-10256 ◽  
Author(s):  
Anushri Rananaware ◽  
Duong Duc La ◽  
Mohammad Al Kobaisi ◽  
Rajesh S. Bhosale ◽  
Sidhanath V. Bhosale ◽  
...  
Keyword(s):  
Supramolecular Assembly ◽  
Supramolecular Assemblies ◽  
Water Soluble

A controlled handed chiral supramolecular assembly of achiral porphyrins induced by chirald- andl-arginine (Arg) in water.

scholarly journals A combined experimental and computational study on supramolecular assemblies in hetero-tetranuclear nickel(ii)–cadmium(ii) complexes with N2O4-donor compartmental Schiff bases

2016 ◽  
Vol 45 (38) ◽  
pp. 15048-15059 ◽  
Author(s):  
Sourav Roy ◽  
Anik Bhattacharyya ◽  
Sourav Purkait ◽  
Antonio Bauzá ◽  
Antonio Frontera ◽  
...  
Keyword(s):  
Schiff Bases ◽  
Computational Study ◽  
Supramolecular Assembly ◽  
Supramolecular Assemblies ◽  
Non Covalent Interactions ◽  
Covalent Interactions

The contribution of various non-covalent interactions in the supramolecular assembly of two new hetero-polynuclear nickel(ii)–cadmium(ii) complexes with salicylidine Schiff bases were estimated.

Use of pH-Responsive Amphiphilic Systems as Displacement Fluids in Enhanced Oil Recovery

SPE Journal ◽  
2014 ◽  
Vol 19 (06) ◽  
pp. 1035-1046 ◽  
Author(s):  
I-Cheng Chen ◽  
Cengiz Yegin ◽  
Ming Zhang ◽  
Mustafa Akbulut
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Maleic Acid ◽  
Supramolecular Assembly ◽  
Supramolecular Assemblies ◽  
Proof Of Concept ◽  
Ph Responsive ◽  
Novel Approach ◽  
Viscosity Behavior ◽  
Amino Amide

Summary We report a novel approach that is based on the complexation and supramolecular assembly of an amino-amide and maleic acid to control viscosity of aqueous displacement fluids. It is shown that the addition of only 2 wt% of adaptable amphiphile/maleic acid into water increases the viscosity of water by a factor of 4.5×105. This superior viscosity behavior is ascribed to the formation and entanglements of layered cylindrical supramolecular assemblies with diameters of several hundred nanometers. Furthermore, the viscosity of the amphiphile solution can be increased 12 times by changing pH from 4 to 8 in a reversible manner. Such a property can be very beneficial for oil-recovery applications when the injectivity becomes a limitation. In addition, the use of switchable viscosity can reduce the energy cost associated with pumping large volumes of viscous displacement fluids. We also demonstrate the proof of concept for the use of adaptable amphiphile solutions in enhanced oil recovery (EOR) as oil-displacement fluids through column experiments. Overall, this study shows that pH-switchable supramolecular assemblies have very intriguing properties that can significantly affect EOR technologies.

Structure-property relationships in normal and mixed dithienylethenes – polyoxometalates supramolecular assemblies with fast solid-state photochromic properties

2021 ◽  
Author(s):  
Oleh Stetsiuk ◽  
Patricia Bolle ◽  
Marie Cordier ◽  
Julien Boixel ◽  
Rémi Dessapt
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
Supramolecular Assembly ◽  
Supramolecular Assemblies ◽  
Inorganic Materials ◽  
Structure Property ◽  
X Ray Diffraction ◽  
Photochromic Properties ◽  
X Ray ◽  
Structure Property Relationships

Five new highly photochromic hybrid organic-inorganic materials were successfully prepared by supramolecular assembly of normal (1+) and mixed (2+) cationic dithienylethenes (DTEs) and polyoxometalates (POMs) units. Single-crystal X-ray diffraction studies...

Square supramolecular assemblies of uranyl complexes in organic solvents

2018 ◽  
Vol 54 (72) ◽  
pp. 10064-10067 ◽  
Author(s):  
Michael J. Servis ◽  
David T. Wu ◽  
Jenifer C. Shafer ◽  
Aurora E. Clark
Keyword(s):  
Organic Solvents ◽  
Supramolecular Assembly ◽  
Supramolecular Assemblies ◽  
Solvent Interactions ◽  
Uranyl Complexes

Uranyl, ligand and solvent interactions lead to unique supramolecular assembly.

Synthesis of new porphyrin dimers linked by diamines and their supramolecular assemblies

2015 ◽  
Vol 19 (07) ◽  
pp. 874-886 ◽  
Author(s):  
Elena A. Mikhalitsyna ◽  
Vladimir S. Tyurin ◽  
Irina P. Beletskaya
Keyword(s):  
Supramolecular Assembly ◽  
Copper Cation ◽  
Supramolecular Assemblies ◽  
Amination Reaction ◽  
Vis Spectroscopy ◽  
Palladium Catalyzed ◽  
High Yields ◽  
First Time ◽  
Porphyrin Dimers

For the first time the bisporphyrins connected via diamine bridges were synthesized by palladium catalyzed Buchwald–Hartwig amination reaction with high yields. The diamine bridges include linear, cyclic and macrocyclic types. Homo- and heteronuclear metallocomplexes of bisporphyrins were investigated with UV-vis spectroscopy in the processes of supramolecular assembly. The interaction with diazabicyclo[2.2.2]octane (DABCO) and cesium and diammonium cations led to the coordination dimers. Control of the conformation of the bisporphyrin was realized via coordination of diamine moiety with copper cation.

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