Four-ring achiral unsymmetrical bent core molecules forming strongly fluorescent smectic liquid crystals with spontaneous polar and chiral ordered B7 and B1 phases

被引：58

作者：

Deb, Rajdeep ^{[1
,2
,3
]}

Nath, Rahul Kanti ^{[1
]}

Paul, Manoj Kumar ^{[1
]}

Rao, Nandiraju V. S. ^{[1
]}

Tuluri, Francis ^{[4
]}

Shen, Yongqiang ^{[2
,3
]}

Shao, Renfan ^{[2
,3
]}

Chen, Dong ^{[2
,3
]}

Zhu, Chenhui ^{[2
,3
]}

Smalyukh, Ivan I. ^{[2
,3
]}

Clark, Noel A. ^{[2
,3
]}

机构：

[1] Assam Univ, Dept Chem, Silchar 788011, India

[2] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

[3] Univ Colorado, Liquid Crystal Mat Res Ctr, Boulder, CO 80309 USA

[4] Jackson State Univ, Jackson, MS 39217 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2010年 / 20卷 / 35期

基金：

美国国家科学基金会;

关键词：

BANANA-SHAPED MESOGENS; HOMOLOGOUS SERIES; MESOPHASE; BEHAVIOR; FIELD;

D O I：

10.1039/c0jm01539c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Achiral molecules based on a novel four-ring core with an ester linkage at the molecular bend are shown to exhibit smectic liquid crystal phases with spontaneously chiral and polar layers (SmCP phases), including their polarization splay modulated and layer undulated (PMLU) variants, B7 and B1. Additionally, these compounds exhibit strong photoluminescence, the first family of SmCP phases to do so.

引用

收藏

页码：7332 / 7336

页数：5

相关论文

共 42 条

[1] Liquid crystal helical ribbons as isometric textures [J].

Achard, MF ;

Kleman, M ;

Nastishin, YA ;

Nguyen, HT .

EUROPEAN PHYSICAL JOURNAL E, 2005, 16 (01) :37-47

[2] Liquid crystalline properties of salicylaldimine-based dimers:: influence of terminal alkyl chain length and central part [J].

Achten, R ;

Koudijs, A ;

Karczmarzyk, Z ;

Marcelis, ATM ;

Sudhölter, EJR .

LIQUID CRYSTALS, 2004, 31 (02) :215-227

[3] Influence of fluoro substituents on the mesophase behaviour of banana-shaped molecules [J].

Bedel, JP ;

Rouillon, JC ;

Marcerou, JP ;

Laguerre, M ;

Nguyen, HT ;

Achard, MF .

JOURNAL OF MATERIALS CHEMISTRY, 2002, 12 (08) :2214-2220

[4] Highly luminescent gels and mesogens based on elaborated borondipyrromethenes [J].

Camerel, F ;

Bonardi, L ;

Schmutz, M ;

Ziessel, R .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (14) :4548-4549

[5] Structure and switching in bent-shaped molecular liquid crystal systems with two mesogenic groups linked by alkylene spacer [J].

Choi, SW ;

Zennyoji, M ;

Takanishi, Y ;

Takezoe, H ;

Niori, T ;

Watanabe, J .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1999, 328 :185-192

[6] Polarization splay as the origin of modulation in the B1 and B7 smectic phases of bent-core molecules [J].

Coleman, D. A. ;

Jones, C. D. ;

Nakata, M. ;

Clark, N. A. ;

Walba, D. M. ;

Weissflog, W. ;

Fodor-Csorba, K. ;

Watanabe, J. ;

Novotna, V. ;

Hamplova, V. .

PHYSICAL REVIEW E, 2008, 77 (02)

[7] Polarization-modulated smectic liquid crystal phases [J].

Coleman, DA ;

Fernsler, J ;

Chattham, N ;

Nakata, M ;

Takanishi, Y ;

Körblova, E ;

Link, DR ;

Shao, RF ;

Jang, WG ;

Maclennan, JE ;

Mondainn-Monval, O ;

Boyer, C ;

Weissflog, W ;

Pelzl, G ;

Chien, LC ;

Zasadzinski, J ;

Watanabe, J ;

Walba, DM ;

Takezoe, H ;

Clark, NA .

SCIENCE, 2003, 301 (5637) :1204-1211

[8] Light-emitting bent-shape liquid crystals [J].

Cristiano, R ;

Ely, F ;

Gallardo, H .

LIQUID CRYSTALS, 2005, 32 (01) :15-25

[9] Synthesis and characterization of luminescent hockey stick-shaped liquid crystalline compounds [J].

Cristiano, Rodrigo ;

Vieira, Andre Alexandre ;

Ely, Fernando ;

Gallardo, Hugo .

LIQUID CRYSTALS, 2006, 33 (04) :381-390

[10] Non-symmetrical luminescent 1,2,4-oxadiazole-based liquid crystals [J].

Gallardo, Hugo ;

Cristiano, Rodrigo ;

Vieira, Andre A. ;

Filho, Ricardo A. W. Neves ;

Srivastava, Rajendra M. ;

Bechtold, Ivan H. .

LIQUID CRYSTALS, 2008, 35 (07) :857-863

← 1 2 3 4 5 →