Anisochronous Dynamics in a Crystalline Array of Steroidal Molecular Rotors: Evidence of Correlated Motion within 1D Helical Domains

2011 ◽  
Vol 133 (19) ◽  
pp. 7280-7283 ◽  
Author(s):  
Braulio Rodríguez-Molina ◽  
Norberto Farfán ◽  
Margarita Romero ◽  
J. Manuel Méndez-Stivalet ◽  
Rosa Santillan ◽  
...  
Keyword(s):  
Molecular Rotors ◽  
Correlated Motion ◽  
Crystalline Array

scholarly journals Crystalline Arrays of Pairs of Molecular Rotors: Correlated Motion, Rotational Barriers, and Space-Inversion Symmetry Breaking Due to Conformational Mutations

2013 ◽  
Vol 135 (25) ◽  
pp. 9366-9376 ◽  
Author(s):  
Cyprien Lemouchi ◽  
Konstantinos Iliopoulos ◽  
Leokadiya Zorina ◽  
Sergey Simonov ◽  
Pawel Wzietek ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Molecular Rotors ◽  
Inversion Symmetry ◽  
Rotational Barriers ◽  
Correlated Motion ◽  
Space Inversion

Correlation averaging of two-dimensional crystals: basic strategy and refinements

1986 ◽  
Vol 44 ◽  
pp. 136-139
Author(s):  
W. Baumeister ◽  
R. Rachel ◽  
R. Guckenberger ◽  
R. Hegerl
Keyword(s):  
Low Dose ◽  
Signal To Noise Ratio ◽  
Real Space ◽  
Fourier Domain ◽  
Two Dimensional ◽  
Signal To Noise ◽  
Unit Cells ◽  
Lateral Displacements ◽  
Established Technique ◽  
Crystalline Array

IntroductionCorrelation averaging (CAV) is meanwhile an established technique in image processing of two-dimensional crystals /1,2/. The basic idea is to detect the real positions of unit cells in a crystalline array by means of correlation functions and to average them by real space superposition of the aligned motifs. The signal-to-noise ratio improves in proportion to the number of motifs included in the average. Unlike filtering in the Fourier domain, CAV corrects for lateral displacements of the unit cells; thus it avoids the loss of resolution entailed by these distortions in the conventional approach. Here we report on some variants of the method, aimed at retrieving a maximum of information from images with very low signal-to-noise ratios (low dose microscopy of unstained or lightly stained specimens) while keeping the procedure economical.

scholarly journals Ready Access to Molecular Rotors Based on Boron Dipyrromethene Dyes-Coumarin Dyads Featuring Broadband Absorption

Molecules ◽  
2020 ◽  
Vol 25 (4) ◽  
pp. 781
Author(s):  
Ernesto Enríquez-Palacios ◽  
Teresa Arbeloa ◽  
Jorge Bañuelos ◽  
Claudia I. Bautista-Hernández ◽  
José G. Becerra-González ◽  
...  
Keyword(s):  
Molecular Rotors ◽  
Fluorescence Signal ◽  
Access Method ◽  
Broadband Absorption ◽  
Boron Dipyrromethene ◽  
Conformational Freedom ◽  
Meso Position ◽  
Photophysical Study ◽  
Ready Access

Herein we report on a straightforward access method for boron dipyrromethene dyes (BODIPYs)-coumarin hybrids linked through their respective 8- and 6- positions, with wide functionalization of the coumarin fragment, using salicylaldehyde as a versatile building block. The computationally-assisted photophysical study unveils broadband absorption upon proper functionalization of the coumarin, as well as the key role of the conformational freedom of the coumarin appended at the meso position of the BODIPY. Such free motion almost suppresses the fluorescence signal, but enables us to apply these dyads as molecular rotors to monitor the surrounding microviscosity.

Adjusting Rotational Behavior of Molecular Rotors by a Rational Tuning of Molecular Structure

2021 ◽  
Author(s):  
Hui-Miao Li ◽  
Gui-Ming Zhong ◽  
Shu-Qi Wu ◽  
Osamu Sato ◽  
Xiao-Yan Zheng ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Rotational Behavior ◽  
Molecular Rotors

Effect of polymer chain tacticity on the fluorescence of molecular rotors

1983 ◽  
Vol 16 (3) ◽  
pp. 452-456 ◽  
Author(s):  
Rafik O. Loutfy ◽  
David M. Teegarden
Keyword(s):  
Polymer Chain ◽  
Molecular Rotors

scholarly journals Molecular Rotors as Switches

Sensors ◽  
2012 ◽  
Vol 12 (9) ◽  
pp. 11612-11637 ◽  
Author(s):  
Mei Xue ◽  
Kang L. Wang
Keyword(s):  
Molecular Rotors

Arrays of Molecular Rotors with Triptycene Stoppers: Surface Inclusion in Hexagonal Tris(o-phenylenedioxy)cyclotriphosphazene

2015 ◽  
Vol 80 (12) ◽  
pp. 6173-6192 ◽  
Author(s):  
Jiří Kaleta ◽  
Paul I. Dron ◽  
Ke Zhao ◽  
Yongqiang Shen ◽  
Ivana Císařová ◽  
...  
Keyword(s):  
Molecular Rotors

Control of Molecular Rotors by Selection of Anchoring Sites

2011 ◽  
Vol 106 (14) ◽  
Author(s):  
Hyo Won Kim ◽  
M. Han ◽  
H.-J. Shin ◽  
S. Lim ◽  
Y. Oh ◽  
...  
Keyword(s):  
Molecular Rotors ◽  
Selection Of

Exploring viscosity, polarity and temperature sensitivity of BODIPY-based molecular rotors

2017 ◽  
Vol 19 (37) ◽  
pp. 25252-25259 ◽  
Author(s):  
Aurimas Vyšniauskas ◽  
Ismael López-Duarte ◽  
Nicolas Duchemin ◽  
Thanh-Truc Vu ◽  
Yilei Wu ◽  
...  
Keyword(s):  
Temperature Sensitivity ◽  
Solvent Polarity ◽  
Molecular Rotors

The sensitivity of structurally similar BODIPY-based molecular rotors to viscosity, temperature and solvent polarity was investigated.

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