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Title: Synthesis of Banana-Shaped liquid crystals for photoswitching properties.
Authors: Lutfor, M.R.
Yusoff, Mashitah Mohd
Hegde, Gurumurthy
Srinivasa, H.T.
+3 Co-authors
Keywords: Azobenzene
optical image storage,
Issue Date: Dec-2013
Publisher: Taylor & Francis
Citation: Molecular Crystals and Liquid Crystals, 2013, Vol.587, p41-53
Abstract: Three banana-shaped monomers containing naphthalene as central units and azobenzene in side arms with terminal alkenes were synthesized and characterized. DSC, polarizing optical microscopy, and X-ray diffraction measurements prove that all compounds exhibit B6 phase. The trans-azobenzene showed high-intensity π–π* transition at about 365 nm and low-intensity n–π* transition at about 450 nm. The strong photoisomerization behavior in solutions of the molecules displayed that trans to cis isomerization takes 45 sec whereas reverse process takes about 28 h and 30 min. This long thermal back relaxation is useful for creation of optical image storage.
Description: Restricted Access.
ISSN: 1542-1406
1563-5287 (Online)
Alternative Location:
Copyright: 2013 Taylor & Francis
Appears in Collections:Research Papers (SCM)

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