Journal
JOURNAL OF ORGANOMETALLIC CHEMISTRY
Volume 689, Issue 12, Pages 2138-2143Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2004.04.003
Keywords
optical switch; bisphthalocyanine; reverse saturable absorption; Z-scan; optical limiting
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We have investigated reverse saturable absorption (RSA) of tetrakis(2,9,16,23-tert-butyllanthanide bisphthalocyanines)(M(TBPc)(2), M = Lu, Dy, Tb) with Z-scan technique. Furthermore, lanthanide bisphthalocyanines have also been utilized for optical switches based on their RSA performance. However, the experimental results reveal that the performances of RSA and optical switches for M(TBPc)(2) (M = Lu, Dy, Tb) are poorer than that of tetrakis(2,9,16,23-tert-butylcopper phthalocyanines) (Cu(TBPc)) due to strong intramolecular pi-pi interaction between the two Pc rings. (C) 2004 Elsevier B.V. All rights reserved.
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