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Title: Large third-Order nonlinearity of new π-conjugated donor-acceptor polymers with substituted Thiophene and 1,3,4-Oxadiazole moieties
Authors: Sunitha, M.S.
Adhikari, A.V.
Vishnumurthy, K.A.
Safakath, K.
Philip, Reji
Keywords: conjugated polymer
electrochemical properties
optical materials
thiophene-based polymer
Issue Date: May-2012
Publisher: Taylor & Francis
Citation: International Journal of Polymeric Materials, 2012, Vol.61, p483
Abstract: We present the synthesis of two newly designed, thiophene-based conjugated polymers (P1 and P2) carrying 1,3,4-oxadiazole, 3,4-dinaphthyloxy thiophene, and 3,4-dialkoxy thiophene moieties as potential NLO active materials. Their NLO properties have been investigated both by the Z-scan and degenerate four-wave mixing (DFWM) techniques using 532 nm, 7 nanosecond laser pulses. The measured β and χ(3) values for the polymers are found to be in the range of 10−11 m/W and 10−11 esu, respectively. The results indicate that they exhibit good optical-limiting behavior and are promising materials for nonlinear optical applications due to effective two-photon absorption (TPA).
Description: Restricted Access.
ISSN: 0091-4037
1563-535X (online)
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Copyright: 2012 Taylor & Francis
Appears in Collections:Research Papers (LAMP)

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