TY - JOUR
T1 - Remarkable change in fluorescence emission of poly(diphenylacetylene) film via in situ desilylation reaction
T2 - Correlation with variations in microporous structure, chain conformation, and lamellar layer distance
AU - Lee, Wang Eun
AU - Han, Dong Cheul
AU - Han, Dong Hee
AU - Choi, Heung Jin
AU - Sakaguchi, Toshikazu
AU - Lee, Chang Lyoul
AU - Kwak, Giseop
PY - 2011/7/15
Y1 - 2011/7/15
N2 - Fluorescence (FL) emission properties, microporous structures, energy-minimized chain conformations, and lamellar layer structures of the silicon-containing poly(diphenylacetylene) derivative of p-PTMSDPA before and after desilylation were investigated. The nitrogen-adsorption isotherms of p-PTMSDPA film before and after desilylation were typical of type I, indicating microporous structures. The BET surface area and pore volume of the p-PTMSDPA film were significantly reduced after the desilylation reaction, simultaneously, its FL emission intensity remarkably decreased. The theoretical calculation on both model compounds of p-PTMSDPA and its desilylated polymer, PDPA, showed a remarkable difference in chain conformation: The side phenyl rings of p-PTMSDPA are discontinuously arranged in a zig-zag pattern, while the PDPA is continuously coiled in a helical manner. The lamellar layer distance (LLD) in the p-PTMSDPA film significantly decreased after the desilylation reaction. Desilylation of the silicon-containing poly(diphenylacetylene) in situ in film induced remarkable changes in fluorescence emission property, microporous structure, chain conformation, and lamellar layer structure.
AB - Fluorescence (FL) emission properties, microporous structures, energy-minimized chain conformations, and lamellar layer structures of the silicon-containing poly(diphenylacetylene) derivative of p-PTMSDPA before and after desilylation were investigated. The nitrogen-adsorption isotherms of p-PTMSDPA film before and after desilylation were typical of type I, indicating microporous structures. The BET surface area and pore volume of the p-PTMSDPA film were significantly reduced after the desilylation reaction, simultaneously, its FL emission intensity remarkably decreased. The theoretical calculation on both model compounds of p-PTMSDPA and its desilylated polymer, PDPA, showed a remarkable difference in chain conformation: The side phenyl rings of p-PTMSDPA are discontinuously arranged in a zig-zag pattern, while the PDPA is continuously coiled in a helical manner. The lamellar layer distance (LLD) in the p-PTMSDPA film significantly decreased after the desilylation reaction. Desilylation of the silicon-containing poly(diphenylacetylene) in situ in film induced remarkable changes in fluorescence emission property, microporous structure, chain conformation, and lamellar layer structure.
KW - chain conformation
KW - desilylation
KW - fluorescence
KW - lamellar
KW - microporosity
KW - poly(diphenylacetylene)
UR - http://www.scopus.com/inward/record.url?scp=79960101009&partnerID=8YFLogxK
U2 - 10.1002/marc.201100073
DO - 10.1002/marc.201100073
M3 - Article
C2 - 21648002
AN - SCOPUS:79960101009
SN - 1022-1336
VL - 32
SP - 1047
EP - 1051
JO - Macromolecular Rapid Communications
JF - Macromolecular Rapid Communications
IS - 14
ER -