In this article, we present pyroelectric investigations of electrically poled side-chain polymers containing mesogenic disazobenzene chromophores using a very simple setup. Heating above the glass temperature (about 104°C) usually eliminates the pyroelectric effect of the sample. However, in samples with an indium tin oxide/aluminum electrode design, a self-poling effect is observed. The pyroelectric coefficients of electrically poled samples reach values of up to From this, we conclude that the strongly anisometric side chains can be reoriented, and that their degree of alignment is about 3%.
REFERENCES
1.
T.
Todorov
, L.
Nikolova
, and N.
Tomova
, Appl. Opt.
23
, 4309
(1984
).2.
S.
Zilker
, T.
Bieringer
, D.
Haarer
, R.
Stein
, J.
van Egmond
, and S.
Kostromine
, Adv. Mater.
10
, 855
(1998
).3.
4.
Y.
Sabi
, M.
Yamamoto
, H.
Watanabe
, T.
Bieringer
, D.
Haarer
, R.
Hagen
, S.
Kostromine
, and H.
Berneth
, Jpn. J. Appl. Phys., Part 1
40
, 1613
(2001
).5.
6.
7.
M.
Eich
, J. H.
Wendorff
, B.
Reck
, and H.
Ringsdorf
, Makromol. Chem., Rapid Commun.
8
, 59
(1987
).8.
9.
H.-J.
Winkelhahn
, H.
Winter
, and D.
Neher
, Appl. Phys. Lett.
64
, 1347
(1994
).10.
K.
Singer
, M.
Kuzyk
, W.
Holland
, J.
Sohn
, S.
Lalama
, R.
Comizzoli
, H.
Katz
, and M.
Schilling
, Appl. Phys. Lett.
53
, 1800
(1988
).11.
M. A.
Mortazavi
, A.
Knoesen
, S. T.
Kowel
, B. G.
Higgins
, and A.
Dienes
, J. Opt. Soc. Am. B
6
, 733
(1989
).12.
13.
S.
Bauer
, W.
Ren
, S.
Yilmaz
, W.
Wirges
, W.-D.
Molzow
, and R.
Gerhard-Multhaupt
, Appl. Phys. Lett.
63
, 2018
(1993
).14.
15.
16.
H.-G. Elias, Makromoleküle (Hütig & Wepf, Basel, 1981).
17.
18.
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