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Structure and Prope...
Structure and Properties of New de Vries SmA∗ Liquid Crystals
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- Reihmann, M. (author)
- Universita di Pisa,University of Pisa
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- Crudeli, A. (author)
- Universita di Pisa,University of Pisa
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- Blanc, C. (author)
- Université de Montpellier,University of Montpellier
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- Lorman, V. (author)
- Université de Montpellier,University of Montpellier
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- Panarin, Y. P. (author)
- Dublin Institute of Technology (DIT),Trinity College Dublin, the University of Dublin
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- Vij, J. K. (author)
- Trinity College Dublin, the University of Dublin
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- Olsson, Nils, 1970 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Galli, G. (author)
- Universita di Pisa,University of Pisa
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(creator_code:org_t)
- Informa UK Limited, 2004
- 2004
- English.
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In: Ferroelectrics. - : Informa UK Limited. - 0015-0193 .- 1563-5112. ; 309, s. 111-119
- Related links:
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http://dx.doi.org/10...
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Subject headings
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- We synthesized a chiral mesogen AC11 and two different siloxanes MSi2-AC11 and DSi3-AC11 derived from it by a hydrosilylation reaction. The effects of varying the molecular architecture were investigated with special attention being devoted to the occurrence of the de Vries SmA* phase. Strong hints that all the three molecules follow the scenario suggested by de Vries were found in the behavior of the susceptibility by studies of their electrooptical response in the SmA* phase. In particular DSi3-AC11 containing two mesogens interconnected by a siloxane spacer presented a critical exponent gamma as high as 1.97, indicating a practically pure de Vries behavior Temperature-dependent X-ray analysis revealed that the three materials underwent a small layer shrinkage at the SmA*-SmC* transition.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Annan teknik -- Övrig annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies -- Other Engineering and Technologies not elsewhere specified (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic Chemistry (hsv//eng)
Keyword
- smectic A
- siloxane liquid crystal
- phase structure
- electrooptics
- de Vries
Publication and Content Type
- art (subject category)
- ref (subject category)
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