TY - JOUR
T1 - Carbazole-functionalised poly(1-phenyl-1-alkyne)s
T2 - Synthesis, light emission, and fluorescent photopatterning
AU - Lam, Jacky W.Y.
AU - Qin, Anjun
AU - Dong, Yuping
AU - Liu, Jianzhao
AU - Jim, Cathy K.W.
AU - Hong, Yuning
AU - Kwok, Hoi Sing
AU - Tang, Ben Zhong
PY - 2012
Y1 - 2012
N2 - Carbazole-containing 1-phenyl-1-alkynes with different spacer lengths [C6H5C≡C(CH2)mCar1(m) (m≤3, 4, 9), Car≤9-carbazolyl] were synthesised in high yields by consecutive substitution and coupling reactions of n-chloro-1-alkynes. Polymerisation of the monomers was effected by NbCl5 and WCl6Ph4Sn catalysts, furnishing soluble polymers P1(m) with high molecular weights in high yields. All the polymers were thermally stable, commencing to lose their weights at high temperatures (<400C). Photoexcitation of their THF solutions induced strong blue light emissions with high quantum efficiencies up to 92%. Multilayer electroluminescence devices with configurations of ITO/P1(m)(:PVK)/BCP/Alq3/LiF/ Al were constructed, which gave blue light with maximum luminance and external quantum efficiency of 438cdm-2 and 0.63%. UV irradiation of a thin film of P1(4) through a mask oxidized and quenched the light emission of the exposed parts, generating a two-dimensional luminescent photopattern.
AB - Carbazole-containing 1-phenyl-1-alkynes with different spacer lengths [C6H5C≡C(CH2)mCar1(m) (m≤3, 4, 9), Car≤9-carbazolyl] were synthesised in high yields by consecutive substitution and coupling reactions of n-chloro-1-alkynes. Polymerisation of the monomers was effected by NbCl5 and WCl6Ph4Sn catalysts, furnishing soluble polymers P1(m) with high molecular weights in high yields. All the polymers were thermally stable, commencing to lose their weights at high temperatures (<400C). Photoexcitation of their THF solutions induced strong blue light emissions with high quantum efficiencies up to 92%. Multilayer electroluminescence devices with configurations of ITO/P1(m)(:PVK)/BCP/Alq3/LiF/ Al were constructed, which gave blue light with maximum luminance and external quantum efficiency of 438cdm-2 and 0.63%. UV irradiation of a thin film of P1(4) through a mask oxidized and quenched the light emission of the exposed parts, generating a two-dimensional luminescent photopattern.
UR - http://www.scopus.com/inward/record.url?scp=84867021502&partnerID=8YFLogxK
U2 - 10.1071/CH12116
DO - 10.1071/CH12116
M3 - Article
AN - SCOPUS:84867021502
SN - 0004-9425
VL - 65
SP - 1228
EP - 1237
JO - Australian Journal of Chemistry
JF - Australian Journal of Chemistry
IS - 9
ER -
