Non-photoisomerizable butterfly shaped tetrasubstituted azobenzenes: synthesis and photophysical studies

2020 ◽  
Vol 44 (21) ◽  
pp. 8818-8822
Author(s):  
Arunachalam Raman ◽  
Afeefah U. Neelambra ◽  
Venugopal Karunakaran ◽  
Shanmugam Easwaramoorthi
Keyword(s):  
Steric Crowding ◽  
Photophysical Studies ◽  
Photoisomerization Process

The trans-azobenzene (AB) substituted derivatives with bulky carbazole (1), phenothiazine (2), and phenyl (3) have been synthesized to understand the effect of steric crowding around the –NN– linkage on the photoisomerization process.

5-Aryl-6-arylthio-2,2′-bipyridine and 6-Arylthio-2,5-diarylpyridine Fluorophores: Pot, Atom, Step Economic (PASE) Synthesis and Photophysical Studies

2021 ◽  
Author(s):  
Maria I. Savchuk ◽  
Dmitry S. Kopchuk ◽  
Olga S. Taniya ◽  
Igor L. Nikonov ◽  
Ilya N. Egorov ◽  
...  
Keyword(s):  
Photophysical Studies

Photophysical studies of substituted porphyrins

1994 ◽  
Vol 90 (8) ◽  
pp. 1073 ◽  
Author(s):  
Paul Charlesworth ◽  
T. George Truscott ◽  
David Kessel ◽  
Craig J. Medforth ◽  
Kevin M. Smith
Keyword(s):  
Photophysical Studies

Photophysical studies on the photochromism of trans-10b,10c-dimethyldihydropyrene

1999 ◽  
pp. 2097-2098 ◽  
Author(s):  
R. Scott Murphy ◽  
Yongsheng Chen ◽  
Timothy R. Ward ◽  
Reginald H. Mitchell ◽  
Cornelia Bohne
Keyword(s):  
Photophysical Studies

Conformation dynamics of non-, singly- and doubly-N-fused [28]hexaphyrins revealed by photophysical studies

2011 ◽  
Vol 47 (13) ◽  
pp. 3960 ◽  
Author(s):  
Jong Min Lim ◽  
Mitsunori Inoue ◽  
Young Mo Sung ◽  
Masaaki Suzuki ◽  
Tomohiro Higashino ◽  
...  
Keyword(s):  
Photophysical Studies

scholarly journals Crystal structure of 2-benzylamino-4-(4-methoxyphenyl)-6,7,8,9-tetrahydro-5H-cyclohepta[b]pyridine-3-carbonitrile

2014 ◽  
Vol 70 (12) ◽  
pp. 525-527 ◽  
Author(s):  
R. A. Nagalakshmi ◽  
J. Suresh ◽  
S. Maharani ◽  
R. Ranjith Kumar ◽  
P. L. Nilantha Lakshman
Keyword(s):  
Crystal Structure ◽  
Pyridine Ring ◽  
Three Dimensional ◽  
Chair Conformation ◽  
Dimensional Structure ◽  
Compound C ◽  
Centroid Distance ◽  
Steric Crowding ◽  
Benzene Rings ◽  
Group A

The title compound, C25H25N3O, comprises a 2-aminopyridine ring fused with a cycloheptane ring, which adopts a chair conformation. The central pyridine ring (r.m.s. deviation = 0.013 Å) carries three substituents,viz.a benzylamino group, a methoxyphenyl ring and a carbonitrile group. The N atom of the carbonitrile group is significantly displaced [by 0.2247 (1) Å] from the plane of the pyridine ring, probably due to steric crowding involving the adjacent substituents. The phenyl and benzene rings are inclined to one another by 58.91 (7)° and to the pyridine ring by 76.68 (7) and 49.80 (6)°, respectively. In the crystal, inversion dimers linked by pairs of N—H...Nnitrilehydrogen bonds generateR22(14) loops. The dimers are linked by C—H...π and slipped parallel π–π interactions [centroid–centroid distance = 3.6532 (3) Å] into a three-dimensional structure.

scholarly journals Ultrafast photophysical studies of a multicomponent sunscreen: Oxybenzone–titanium dioxide mixtures

2016 ◽  
Vol 664 ◽  
pp. 39-43 ◽  
Author(s):  
Lewis A. Baker ◽  
Lucy C. Grosvenor ◽  
Michael N.R. Ashfold ◽  
Vasilios G. Stavros
Keyword(s):  
Titanium Dioxide ◽  
Photophysical Studies
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