CO2 regulates molecular rotor dynamics in porous materials

2017 ◽  
Vol 53 (55) ◽  
pp. 7776-7779 ◽  
Author(s):  
S. Bracco ◽  
T. Miyano ◽  
M. Negroni ◽  
I. Bassanetti ◽  
L. Marchio' ◽  
...  
Keyword(s):  
Porous Materials ◽  
Molecular Crystals ◽  
Rotor Dynamics ◽  
Molecular Rotors ◽  
Molecular Rotor

Porous molecular crystals contain fast molecular rotors whose dynamics can be controlled by CO2.

A ferroelastic molecular rotor crystal showing inverse temperature symmetry breaking

2021 ◽  
Author(s):  
Le-Ping Miao ◽  
Lin-Lin Chu ◽  
Xiang-Bin Han ◽  
Bei-Dou Liang ◽  
Chao-Yang Chai ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Smart Materials ◽  
Molecular Crystals ◽  
Molecular Rotors ◽  
Inverse Temperature ◽  
Next Generation ◽  
Molecular Rotor ◽  
Dynamic Materials ◽  
Typical Type

Functional dynamic molecular crystals have drawn increasing interest in exploring next-generation flexible and smart materials. Molecular rotors, as a typical type of dynamic materials, are good candidates to exhibit bulk...

Molecular‐Rotor‐Driven Advanced Porous Materials

2021 ◽  
Author(s):  
Jinqiao Dong ◽  
Vanessa Wee ◽  
Shing Bo Peh ◽  
Dan Zhao
Keyword(s):  
Porous Materials ◽  
Molecular Rotor

Molecular Rotors as Reporters for Viscosity of Solutions of Collagen Like Peptides

2021 ◽  
Author(s):  
Christopher McTiernan ◽  
Matias Zuñiga-Bustos ◽  
Roberto Rosales-Rojas ◽  
Pablo Barrias ◽  
May Griffith ◽  
...  
Keyword(s):  
Steady State ◽  
Fluorometric Assay ◽  
Molecular Rotors ◽  
Molecular Rotor

We have studied the suitability of using a molecular rotor-based steady-state fluorometric assay for evaluating changes in both the conformation and the viscosity of collagen-like peptide solutions. Our results indicate...

Predicting lanthanide boride inverse sandwich tubular molecular rotors with the smallest core–shell structure

Nanoscale ◽  
2019 ◽  
Vol 11 (44) ◽  
pp. 21311-21316 ◽  
Author(s):  
Xiao-Qin Lu ◽  
Qiang Chen ◽  
Xin-Xin Tian ◽  
Yue-Wen Mu ◽  
Hai-Gang Lu ◽  
...  
Keyword(s):  
First Principles ◽  
Shell Structure ◽  
Molecular Rotors ◽  
Core Shell ◽  
Molecular Rotor ◽  
Sandwich Complexes ◽  
Core Shell Structure

Extensive first-principles theory calculations predict the possibility of bi-decker inverse sandwich complexes La2[B18], La2[B18]2−, and La2[B2@B18], with the B2-centered La2[B2@B18] as a tubular molecular rotor possessing the smallest core–shell structure.

scholarly journals Fluorinated Organic Porous Materials

2019 ◽  
Vol 01 (01) ◽  
pp. 019-029 ◽  
Author(s):  
Zhenglin Zhang ◽  
Ognjen Š. Miljanić
Keyword(s):  
Porous Materials ◽  
Organic Molecules ◽  
Metal Organic Frameworks ◽  
Molecular Crystals ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Metal Organic ◽  
Physical And Chemical ◽  
And Chemical Properties

Fluorine is in many aspects unique among the elements, and its incorporation into organic molecules can dramatically change their physical and chemical properties. This minireview will survey the existing classes of fluorinated porous materials, with a particular focus on all-organic porous materials. We will highlight our work on the preparation and study of metal–organic frameworks and porous molecular crystals derived from extensively fluorinated rigid aromatic pyrazoles and tetrazoles. Where possible, comparisons between fluorinated and nonfluorinated materials will be made.

scholarly journals The effect of structural heterogeneity upon the microviscosity of ionic liquids

2020 ◽  
Vol 11 (24) ◽  
pp. 6121-6133 ◽  
Author(s):  
Ryan Clark ◽  
Mohd A. Nawawi ◽  
Ana Dobre ◽  
David Pugh ◽  
Qingshan Liu ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Bulk Viscosity ◽  
Structural Heterogeneity ◽  
Molecular Rotors ◽  
Complex Relationship ◽  
Molecular Rotor ◽  
Time Resolved Fluorescence ◽  
Time Resolved

The behaviour of two molecular rotors have been studied in various ionic liquids. Time resolved fluorescence shows a complex relationship between the bulk viscosity of the ionic liquid and microstructure of solvent around each molecular rotor.

Precision Assessment of Biofluid Viscosity Measurements Using Molecular Rotors

2005 ◽  
Vol 127 (3) ◽  
pp. 450-454 ◽  
Author(s):  
Walter J. Akers ◽  
Mark A. Haidekker
Keyword(s):  
Fluorescence Emission ◽  
High Viscosity ◽  
Plasma Viscosity ◽  
Molecular Rotors ◽  
Solution Viscosity ◽  
Human Blood Plasma ◽  
Fluid Viscosity ◽  
Molecular Rotor ◽  
Test Set ◽  
Precision Assessment

Blood viscosity changes with many pathologic conditions, but its importance has not been fully investigated because the current methods of measurement are poorly suited for clinical applications. The use of viscosity-sensitive fluorescent molecular rotors to determine fluid viscosity in a nonmechanical manner has been investigated recently, but it is unknown how the precision of the fluorescence-based method compares to established mechanical viscometry. Human blood plasma viscosity was modulated with high-viscosity plasma expanders, dextran, pentastarch, and hetastarch. The samples were divided into a calibration and a test set. The relationship between fluorescence emission and viscosity was established using the calibration set. Viscosity of the test set was determined by fluorescence and by cone-and-plate viscometer, and the precision of both methods compared. Molecular rotor fluorescence intensity showed a power law relationship with solution viscosity. Mechanical measurements deviated from the theoretical viscosity value by less than 7.6%, while fluorescence-based measurements deviated by less than 6%. The average coefficient of variation was 6.9% (mechanical measurement) and 3.4% to 3.8% (fluorescence-based measurement, depending on the molecular rotor used). Fluorescence-based viscometry exhibits comparable precision to mechanical viscometry. Fluorescence viscometry does not apply shear and is therefore more practical for biofluids which have apparent non-Newtonian properties. In addition, fluorescence instrumentation makes very fast serial measurements possible, thus promising new areas of application in laboratory and clinical settings.

Storage of CO2 into Porous Coordination Polymer Controlled by Molecular Rotor Dynamics

2018 ◽  
Vol 57 (28) ◽  
pp. 8687-8690 ◽  
Author(s):  
Munehiro Inukai ◽  
Masanori Tamura ◽  
Satoshi Horike ◽  
Masakazu Higuchi ◽  
Susumu Kitagawa ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Rotor Dynamics ◽  
Molecular Rotor ◽  
Porous Coordination Polymer

scholarly journals Measuring viscosity inside mesoporous silica using protein-bound molecular rotor probe

2018 ◽  
Vol 20 (36) ◽  
pp. 23202-23213 ◽  
Author(s):  
Pegah S. Nabavi Zadeh ◽  
Milene Zezzi do Valle Gomes ◽  
Maria Abrahamsson ◽  
Anders E. C. Palmqvist ◽  
Björn Åkerman
Keyword(s):  
Mesoporous Silica ◽  
Fluorescence Spectroscopy ◽  
Effective Viscosity ◽  
Molecular Rotors ◽  
Molecular Rotor

Fluorescence spectroscopy of protein-bound molecular rotors Cy3 and Cy5 is used to monitor the effective viscosity inside the pores of two types of mesoporous silica (SBA-15 and MCF) with pore diameters between 8.9 and 33 nm.

scholarly journals Molecular Rotors Built in Porous Materials

2016 ◽  
Vol 49 (9) ◽  
pp. 1701-1710 ◽  
Author(s):  
Angiolina Comotti ◽  
Silvia Bracco ◽  
Piero Sozzani
Keyword(s):  
Porous Materials ◽  
Molecular Rotors
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