Polymerization Of A Novel Liquid Crystalline Diacetylene Monomer

Michael A. Schen

doi:10.1117/12.948231

21 December 1988 Polymerization Of A Novel Liquid Crystalline Diacetylene Monomer

Michael A. Schen

Author Affiliations +

Proceedings Volume 0971, Nonlinear Optical Properties of Organic Materials; (1988) https://doi.org/10.1117/12.948231
Event: 32nd Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1988, San Diego, CA, United States

Abstract

The polymerization of a liquid crystalline diacetylene monomer, 116 bis-[N-4-oxybenzylidene 4'-n-octylaniline) 2,4-hexadiyne, 1-0BOA, is reported both within the crystal and liquid crystal phases. The mono-mer exhibits smectic phase polymorphism at temperatures below the clearing temperature as shown by small angle X-ray scattering and optical microscopy. Polymerization kinetic results show first-order disappearance of monomer as seen by differential scanning calorimetr with a thermal activation energy of 31 kcal/mol. in the liquid crystal phase and ca. 71 kcal/mol. in the crystal phase. Poly(1-0BOA) exhibits a "soft" lamellar-like layer structure reminiscent of the monomer when polymerized within a low temerature liquid crystal phase. Consequently, the topochemicalpolymerization of diacetylene monomers within a liquid crystal phase top give ordered polymer structures is reported for the first time.

Citation Download Citation

Michael A. Schen "Polymerization Of A Novel Liquid Crystalline Diacetylene Monomer", Proc. SPIE 0971, Nonlinear Optical Properties of Organic Materials, (21 December 1988); https://doi.org/10.1117/12.948231

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE