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Relevant bibliographies by topics / Phenyl azobenzenes

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Journal articles

Academic literature on the topic 'Phenyl azobenzenes'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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Journal articles on the topic "Phenyl azobenzenes"

1

A., V. Doshi, and J. Ganatra K. "Homologous series of azomesogens 4-(4'-n-Aikoxybenzoyloxy)-phenyl azobenzenes." Journal of Indian Chemical Society Vol. 82, May 2005 (2005): 466–68. https://doi.org/10.5281/zenodo.5830342.

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Matushri Virbaima Mahila Science & Home Science College (Saurashtra University), Kalavad Road. Rajkot-360 001. India <em>Manuscript received 1 April 2003, revised 18 December 2004, accepted 2 February 2005</em> A homologous series of twelve homologues have been synthesized containing carboxy (-COO-) and azo (-N=N-) central groups. First to seventh homologues of the series are enantiotropic nematic and tenth In sixteenth homologues exhibit polymorphism enantiotropically. The behaviour of the series and its mesophase thermal stabilities are compared with other structurally related

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2

Brandt, Thomas, Pascal Lentes, Jeremy Rudtke, Michael Hösgen, Christian Näther, and Rainer Herges. "Synthesis of N-acetyl diazocine derivatives via cross-coupling reaction." Beilstein Journal of Organic Chemistry 21 (March 4, 2025): 490–99. https://doi.org/10.3762/bjoc.21.36.

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Diazocines are photoswitches derived from azobenzenes by bridging the two phenyl rings in ortho position with a CH2CH2 group forming an eight membered (diazocine) ring. Diazocine is superior to most azobenzenes in almost all photophysical properties (switching efficiency, quantum yield, wavelengths etc.). The biggest advantage, especially in photopharmacology and when used in photoswitchable materials, is the inverted thermodynamic stability of the two switching states (isomers). The Z isomer is more stable than the E form. However, one disadvantage that it shares with the frequently used azob

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3

Vande Velde, Christophe M. L., Matthias Zeller, and Vladimir A. Azov. "Comparison of computationally cheap methods for providing insight into the crystal packing of highly bromomethylated azobenzenes." Acta Crystallographica Section C Structural Chemistry 74, no. 12 (2018): 1692–702. http://dx.doi.org/10.1107/s2053229618015309.

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For five bromomethylated azobenzenes, namely (E)-[4-(bromomethyl)phenyl][4-(dibromomethyl)phenyl]diazene, C14H11Br3N2, (E)-1,2-bis[4-(dibromomethyl)phenyl]diazene, C14H10Br4N2, (E)-[3-(bromomethyl)phenyl][3-(dibromomethyl)phenyl]diazene, C14H11Br3N2, (E)-[3-(dibromomethyl)phenyl][3-(tribromomethyl)phenyl]diazene, C14H10Br4N2, and (E)-1,2-bis[3-(dibromomethyl)phenyl]diazene, C14H9Br5N2, the computationally cheap CLP PIXEL approach and CrystalExplorer were used for calculating lattice energies and performing Hirshfeld surface analysis via the enrichment ratios of atomic contacts. The procedures

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4

Raman, Arunachalam, Afeefah U. Neelambra, Venugopal Karunakaran, and Shanmugam Easwaramoorthi. "Non-photoisomerizable butterfly shaped tetrasubstituted azobenzenes: synthesis and photophysical studies." New Journal of Chemistry 44, no. 21 (2020): 8818–22. http://dx.doi.org/10.1039/d0nj01092h.

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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.

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5

Han, Jie, Changduo Pan, Xuefeng Jia, and Chengjian Zhu. "Rhodium-catalyzed ortho-cyanation of symmetrical azobenzenes with N-cyano-N-phenyl-p-toluenesulfonamide." Org. Biomol. Chem. 12, no. 43 (2014): 8603–6. http://dx.doi.org/10.1039/c4ob01736f.

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6

Jirman, Josef. "1H and 13C NMR spectra of 2,2’-disubstitutedtrans-azobenzenes suitable for preparation of metallized azo dyes." Collection of Czechoslovak Chemical Communications 56, no. 10 (1991): 2160–68. http://dx.doi.org/10.1135/cccc19912160.

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The 1H and 13C NMR spectra have been measured of six trans-azobenzenes substituted at 2 and 2’ positions with substituents favourable for complex formation with a metal (OH, NH2, NHCOCH3, COOH). From the standpoint of NMR such substituted trans-azobenzenes are present in solution in a rapid equilibrium following from rotation around the bond between C-1 of phenyl group and N atom of azo linkage. The predominant form has the substituent in the syn-position with respect to the free electron pair of the nearer azo nitrogen atom. The equilibrium is affected by dipolar aprotic solvents (such as hex

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7

Bushuyev, Oleksandr S., Anna Tomberg, Joanna R. Vinden, Nicolas Moitessier, Christopher J. Barrett, and Tomislav Friščić. "Azo⋯phenyl stacking: a persistent self-assembly motif guides the assembly of fluorinated cis-azobenzenes into photo-mechanical needle crystals." Chemical Communications 52, no. 10 (2016): 2103–6. http://dx.doi.org/10.1039/c5cc08590j.

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8

Müller, Sabrina, Jannik Paulus, Jochen Mattay, Heiko Ihmels, Veronica I. Dodero, and Norbert Sewald. "Photocontrolled DNA minor groove interactions of imidazole/pyrrole polyamides." Beilstein Journal of Organic Chemistry 16 (January 9, 2020): 60–70. http://dx.doi.org/10.3762/bjoc.16.8.

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Azobenzenes are photoswitchable molecules capable of generating significant structural changes upon E-to-Z photoisomerization in peptides or small molecules, thereby controlling geometry and functionality. E-to-Z photoisomerization usually is achieved upon irradiation at 350 nm (π–π* transition), while the Z-to-E isomerization proceeds photochemically upon irradiation at >400 nm (n–π* transition) or thermally. Photoswitchable compounds have frequently been employed as modules, e.g., to control protein–DNA interactions. However, their use in conjunction with minor groove-binding imidazole/py

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9

Strüben, Jan, Jonas Hoffmann, David Presa-Soto, Christian Näther, and Anne Staubitz. "Crystal structures of 3,3′-bis(hydroxydimethylsilanyl)azobenzene and 4,4′-bis(hydroxydimethylsilane)azobenzene." Acta Crystallographica Section E Crystallographic Communications 72, no. 11 (2016): 1590–94. http://dx.doi.org/10.1107/s2056989016016297.

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The title compounds {systematic names (E)-[diazene-1,2-diylbis(3,1-phenylene)]bis(dimethylsilanol) and (E)-[diazene-1,2-diylbis(4,1-phenylene)]bis(dimethylsilanol)}, both of the sum formula C16H22N2O2Si2, were obtained by transmetallation of the respective bis-stannylated azobenzenes with dichlorodimethylsilane and esterification followed by hydrolysis. The asymmetric unit of 3,3′-diazenediylbis[dimethyl(phenyl)silanol] (with the silanol functional group in ametaposition) consists of two molecules, of which one occupies a general position, whereas the second is located on a centre of inversion

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10

Sell, Hanno, Christian Näther, and Rainer Herges. "Amino-substituted diazocines as pincer-type photochromic switches." Beilstein Journal of Organic Chemistry 9 (January 2, 2013): 1–7. http://dx.doi.org/10.3762/bjoc.9.1.

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Azobenzenes are robust, reliable, and easy to synthesize photochromic switches. However, their high conformational flexibility is a disadvantage in machine-like applications. The almost free rotation of the phenyl groups can be restricted by bridging two ortho positions with a CH2CH2 group, as realized in the dihydrodibenzo diazocine framework. We present the synthesis and properties of 3,3’-amino- and 3,3’-acetamido substituted diazocines. Upon irradiation with light of 405 and 530 nm they isomerize from the cis to the trans configuration and back, and thereby perform a pincer-like motion. In

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