Zobrazeno 1 - 10
of 142
pro vyhledávání: '"Robert P. Lemieux"'
Autor:
Nadia Kapernaum, Friederike Knecht, C. Scott Hartley, Jeffrey C. Roberts, Robert P. Lemieux, Frank Giesselmann
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 8, Iss 1, Pp 1118-1125 (2012)
A system of two liquid-crystalline phenylpyrimidines differing strongly in molecular length was studied. The phase diagram of these two chemically similar mesogens, with a length ratio of 2, was investigated, and detailed X-ray diffraction and electr
Externí odkaz:
https://doaj.org/article/c838d67df5794227a489c00f8fca918e
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 5, Iss 1, p 65 (2009)
The phase diagrams of two mixtures of chemically similar smectogenic mesogens strongly differing in molecular length were investigated. In these mixtures the nematic phase present in the pure short mesogen disappeared rapidly on the addition of the l
Externí odkaz:
https://doaj.org/article/f6c3b015f68246ddb97082f0e40dc4f6
Publikováno v:
The Journal of Organic Chemistry. 86:17543-17549
Two new smectic C* mesogens containing a hexyloxy side chain and an azafluorenone (3a) or azafluorenol (3b) core were synthesized using a combined directed ortho metalation-directed remote metalation-Suzuki-Miyaura cross-coupling strategy. 3b was for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c08bb59daeb27bac7ed566874fff890
https://doi.org/10.1021/acs.joc.1c01027
https://doi.org/10.1021/acs.joc.1c01027
Publikováno v:
The Journal of organic chemistry. 86(24)
Two new smectic C* mesogens containing a hexyloxy side chain and an azafluorenone (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::ae342147c8d086844d422a47f7021a0b
https://pubmed.ncbi.nlm.nih.gov/34851650
https://pubmed.ncbi.nlm.nih.gov/34851650
Autor:
Torsten Hegmann, Sasan Shadpour, Jiao Liu, Marianne E. Prévôt, Elda Hegmann, Michael Chirgwin, Ahlam Nemati, Robert P. Lemieux
Publikováno v:
ACS nano. 15(4)
The coupling between molecular conformation and chirality is a cornerstone in the construction of supramolecular helical structures of small molecules across various length scales. Inspired by biological systems, conformational preselection and contr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af46e681647d19761ff7c8b9e387550e
https://pubmed.ncbi.nlm.nih.gov/33734664
https://pubmed.ncbi.nlm.nih.gov/33734664
Publikováno v:
ChemPhysChem. 19:2703-2708
The mesogens QL32-6, QL33-6 and QL-34-6 contain 5-phenylpyrimidine cores and terminal nanosegregating carbosilane end groups of different lengths and are known to exhibit 'de Vries-type' properties of varying strength. We report a systematic study of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0928b12200840d9c7f646c01bb0e5e68
https://doi.org/10.1002/cphc.201800537
https://doi.org/10.1002/cphc.201800537
Autor:
Christian Haege, Robert P. Lemieux, Carsten Müller, Frank Giesselmann, Marcel Holzwarth, Ziauddin Ahmed
Publikováno v:
Journal of Materials Chemistry C. 6:1562-1566
We report the results of a study in which we introduce a tricarbosilane end-group in a mesogenic scaffold derived from an axially chiral biphenyl with a large transverse dipole moment. This structural modification is intended to promote the formation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23665b338df6453ec1fc36629e0d55e9
https://doi.org/10.1039/c7tc05426b
https://doi.org/10.1039/c7tc05426b
Autor:
Friederike Knecht, Jan H. Porada, Christopher P. J. Schubert, Frank Giesselmann, Robert P. Lemieux, Marc D. Harjung
Publikováno v:
Journal of Materials Chemistry C. 5:7452-7457
The recent discovery of a new lyotropic liquid crystal phase, the structure and properties of which are analogous to the chiral ferroelectric smectic C-phase (SmC*) in thermotropics, was based on a tailored amphiphile structure in which a tilt-promot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42d2e87ce2819e5a2cf506253a1ecb0e
https://doi.org/10.1039/c7tc02030a
https://doi.org/10.1039/c7tc02030a
Autor:
Andreas Bogner, Christopher P. J. Schubert, Frank Giesselmann, Robert P. Lemieux, Carsten Müller
Publikováno v:
Soft Matter. 13:3307-3313
Structural variants of the ‘de Vries-like’ mesogen 5-[4-(12,12,14,14,16,16-hexamethyl-12,14,16-trisilaheptadecyloxy)phenyl]-2-hexyloxypyrimidine (QL16-6), including two isomers with branched iso-tricarbosilane end-groups, were synthesized and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6118584b9ef05ed175c20cb99a2f12ff
https://doi.org/10.1039/c7sm00355b
https://doi.org/10.1039/c7sm00355b
Autor:
Kevin McEleney, Ian R. Nemitz, Rolfe G. Petschek, Cathleen M. Crudden, Robert P. Lemieux, Charles Rosenblatt
Publikováno v:
Liquid Crystals. 43:497-504
Chiral periodic mesoporous organosilica (PMO) materials have been shown to deracemise a configurationally achiral, but conformationally racemic liquid crystal in which the PMO is embedded. In particular, application of an electric field E in the liqu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0757915812c5772bcf35382385179312
https://doi.org/10.1080/02678292.2015.1119321
https://doi.org/10.1080/02678292.2015.1119321