Photochromic chiral liquid crystalline systems containing spiro-oxazine with a chiral substituent I. Synthesis and characterization of compounds

Hattori, Hideshi; Uryu, Toshiyuki

doi:10.1080/026782901462346

Cited by 16 publications

(6 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been presumed that the appearance of mesophase on cooling was caused by reorientation of the spirooxazine moieties in the molten state. Photochromic polymerizable acrylates containing spirooxazine moieties with a chiral substituent were also prepared which yielded photochromic chiral liquid crystalline systems . The photochromic acrylates containing both an undecamethylene group and a (2 S , 3 S )-2-chloro-3-methylpentanoyloxy group or a (−)-menthoxyacetoxy group gave a supercooled mesophase, the latter compound was found to reflect right-handed blue light at room temperature.…”

Section: Photochromic Liquid Crystalsmentioning

confidence: 99%

Light-Driven Liquid Crystalline Materials: From Photo-Induced Phase Transitions and Property Modulations to Applications

2016

View full text Add to dashboard Cite

Light-driven phenomena both in living systems and nonliving materials have enabled truly fascinating and incredible dynamic architectures with terrific forms and functions. Recently, liquid crystalline materials endowed with photoresponsive capability have emerged as enticing systems. In this Review, we focus on the developments of light-driven liquid crystalline materials containing photochromic components over the past decade. Design and synthesis of photochromic liquid crystals (LCs), photoinduced phase transitions in LC, and photoalignment and photoorientation of LCs have been covered. Photomodulation of pitch, polarization, lattice constant and handedness inversion of chiral LCs is discussed. Light-driven phenomena and properties of liquid crystalline polymers, elastomers, and networks have also been analyzed. The applications of photoinduced phase transitions, photoalignment, photomodulation of chiral LCs, and photomobile polymers have been highlighted wherever appropriate. The combination of photochromism, liquid crystallinity, and fabrication techniques has enabled some fascinating functional materials which can be driven by ultraviolet, visible, and infrared light irradiation. Nanoscale particles have been incorporated to widen and diversify the scope of the light-driven liquid crystalline materials. The developed materials possess huge potential for applications in optics, photonics, adaptive materials, nanotechnology, etc. The challenges and opportunities in this area are discussed at the end of the Review.

show abstract

Section: Photochromic Liquid Crystalsmentioning

confidence: 99%

Light-Driven Liquid Crystalline Materials: From Photo-Induced Phase Transitions and Property Modulations to Applications

2016

View full text Add to dashboard Cite

show abstract

“…Other Photoresponsive Molecules Several types of other photochromic molecules have been examined as chiral dopants for phototunable CLCs, including spirooxazines [132][133][134], fulgides [84,135,136], and axially chiral bicyclic ketones [27,38,40,42]. Recently, Li et al reported some novel thermally reversible photochromic axially chiral spirooxazines [133].…”

Section: Single Chiral Photoresponsive Dopantmentioning

confidence: 99%

“…Recently, Li et al reported some novel thermally reversible photochromic axially chiral spirooxazines [133]. These axially chiral spirooxazines showed the ability to twist the nematic host LC E7 to form the cholesteric phases and the HTPs can be tuned by UV light.…”

Section: Single Chiral Photoresponsive Dopantmentioning

confidence: 99%

Photoresponsive Cholesteric Liquid Crystals

Li¹,

Li²

2013

Intelligent Stimuli‐Responsive Materials

View full text Add to dashboard Cite

“…Photochromism studies of spirooxazine in polymer matrices [17], liquid crystal polymers containing spirooxazine as mesophases [18], spirooxazine grafted, poly[2-ethynyl-pyridinum bromide] ionic conjugated polymer [19], poly[N,N- [20] and other synthetic polymers [21,22] have recently been developed. However, photocontrollable fluorescent changes of spirooxazine are very scarce [23]; in particular, photoswitchable fluorescent photochromic spirooxazine polymers are virtually unknown.…”

Section: Introductionmentioning

confidence: 99%