Peculiar orientational disorder in 4-bromo-4′-nitrobiphenyl (BNBP) and 4-bromo-4′-cyanobiphenyl (BCNBP) leading to bipolar crystals

Autor: Matthias Burgener, Hanane Aboulfadl, Gaël Charles Labat, Michel Bonin, Martin Sommer, Ravish Sankolli, Michael Wübbenhorst, Jürg Hulliger

Publikováno v: IUCrJ, Vol 3, Iss 3, Pp 219-225 (2016)

180° orientational disorder of molecular building blocks can lead to a peculiar spatial distribution of polar properties in molecular crystals. Here we present two examples [4-bromo-4′-nitrobiphenyl (BNBP) and 4-bromo-4′-cyanobiphenyl (BCNBP)] w

Externí odkaz: https://doaj.org/article/fa92f7f5d82d4d9ebad4466fdc571692

Peculiar orientational disorder in 4-bromo-4'-nitrobiphenyl (BNBP) and 4-bromo-4'cyanobiphenyl (BCNBP) leading to bipolar crystals

Autor: Hanane Aboulfadl, Ravish Sankolli, Matthias Burgener, Jürg Hulliger, Michel Bonin, Gaël Labat, Martin Sommer, Michael Wübbenhorst

Publikováno v: IUCr Journals
IUCrJ
Burgener, Matthias; Oulevey, Hanane; Labat, Gaël Charles; Bonin, Michel; Sommer, Martin; Sankolli, Ravish; Wübbenhorst, Michael; Hulliger, Jürg (2016). Peculiar orientational disorder in 4-bromo-4′-nitrobiphenyl (BNBP) and 4-bromo-4′-cyanobiphenyl (BCNBP) leading to bipolar crystals. IUCrJ, 3(3), pp. 219-225. International Union of Crystallography 10.1107/S2052252516006709
IUCrJ, Vol 3, Iss 3, Pp 219-225 (2016)

Two dipolar biphenyls show significant 180° orientational disorder resulting in bipolar as-grown crystals. An added symmetrical biphenyl interferes with polarity formation and inverts the initial bipolar state.
180° orientational disorder of m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cce16a82819518793d572f44818033a5

Polar Nature of Biomimetic Fluorapatite/Gelatin Composites: A Comparison of Bipolar Objects and the Polar State of Natural Tissue

Autor: Matthias Burgener, Susanne Busch, J. Hulliger, Rüdiger Kniep, Mazeyar Parvinzadeh Gashti, Tristan Putzeys, Hanane Aboulfadl, Michael Wübbenhorst

Publikováno v: Biomacromolecules

The correspondence of the state of alignment of macromolecules in biomimetic materials and natural tissues is demonstrated by investigating a mechanism of electrical polarity formation: An in vitro grown biomimetic FAp/gelatin composite is investigat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2002992bd60270bd8ee44813e6ebf9c1

Polar ordering of macromolecular chains in biomimetic composite materials and natural tissues

Autor: Matthias Burgener, Hanane Aboulfadl, Jürg Hulliger, Martin Sommer

Publikováno v: Acta Crystallographica Section A Foundations and Advances. 72:s58-s58

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f86e66a934a3e3253ed228d3303a8ef5
https://doi.org/10.1107/s2053273316099125

Polar alignment of dye molecules in sectors of host lattices revealed by phase sensitive second harmonic generation and scanning pyroelectric microscopy

Autor: Jürg Hulliger, Bart Kahr, Jason B. Benedict, Hanane Aboulfadl, Matthias Burgener

Publikováno v: CrystEngComm. 14:4391

Phase sensitive second harmonic generation (PS-SHG) was applied to investigate the effect of polar surface recognition of dye molecules (amaranth and sunset yellow, as well as dimethylaminostyryl-pyridine) in symmetry related sectors of host lattices

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::91482a6b7b374b848ded0e16cb19ea52
https://doi.org/10.1039/c2ce25152c