Type
Text
Type
Thesis
Advisor
Lauher, Joseph W., Fowler, Frank W.
Date
2012-05-01
Keywords
Chemistry
Department
Department of Chemistry
Language
en_US
Source
This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree.
Identifier
http://hdl.handle.net/11401/71217
Publisher
The Graduate School, Stony Brook University: Stony Brook, NY.
Format
application/pdf
Abstract
Since Shirakawa et al. discovered the promising electrical conductivity of polyacetylene in the 1970s, polyacetylenes and their analogous have been extensively explored as advanced materials. Among them, polytriacetylenes are a new class of conjugated polymers that can only be achieved by topochemical polymerization. Theoretically, topochemically polymerizing the triacetylene monomers is the most direct route to get polytriacetylene. However, the challenge in 1,6 polymerization is to get the suitable molecular spacing for the topochemical reaction. Host-guest strategy was developed to achieve the specific spacing suitable for topochemical polymerizations, such as 1,4 and 1,6- polymerizations. After optimizing the previous synthesis route and crystal growing method, a quality co-crystals of3-((3-(pyridin-4-yl)propyl)amino)cyclohex-2-enone and dodeca-4,6,8-triynedioic acid was successfully prepared. The co-crystal, with repeat distance of 7.25 ? , underwent a 100% polymerization at 115 degrees C over 19days. X-ray diffraction was used to characterize all monomer and polymer crystals. Another attempt has been made to design and synthesize a triacetylenes that assembled due to pi-pi interaction. This pyridyl-substituted triacetylene was successfully synthesized in a five-step route. X-ray diffraction was utilized to characterize the single crystal of octa-2,4,6-triyne-1,8-diyl dinicotinate which indicated the repeat distance of 7.408 ? . This value meets the ideal requirement for 1,6-polymerization. | 126 pages
Recommended Citation
Fan, Zhaobo, "Host-Guest Approach for 1,6-Topochemical Polymerization
of Triacetylenes" (2012). Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions). 423.
https://commons.library.stonybrook.edu/stony-brook-theses-and-dissertations-collection/423