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Proceedings Paper

Optical limiting investigation of metalloporphyrins
Author(s): Guo Ying Yang; Leng Leng Chng; Yiew Wang Lee; Wei Pin Lau; Kin Seng Lai
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Paper Abstract

Meso-tetrakis{4-[2-(trimethylsilyl)ethynyl]phenyl}porphyrin [TPP(4-CCTMS)_H2] and its complexes with metals Zn(II), Ni(II), Ga(III), In(III) and Sn(IV) were synthesized and characterized. Their optical limiting properties were determined under the irradiation of a 532 nm/5 ns pulse laser at the repetition rate of 20 Hz. The optical limiting performance of the zinc derivative, Zn(II)-meso-tetrakis{4-[2-(trimethylsilyl)ethynyl]phenyl}porphyrin, [TPP(4-CCTMS)_Zn], is better than that of its analogues, Zn(II)-meso-tetraphenylporphyrin, [TPP_Zn], and Zn(II)-meso-tetratolyl-porphyrin, [TTP_Zn], indicating that optical limiting property can be improved via fine molecular modification on the para-position of the meso-phenyl rings. In this way, the Soret band of the porphyrin is not red-shifted thereby high photopic transmission of the samples can be maintained. The optical limiting performance can be further enhanced via insertion of closed-shell metal ions. Particularly, In(III)Cl-meso-tetrakis{4-[2-(trimethylsilyl)ethynyl]phenyl}porphyrin, [TPP(4-CCTMS)_InCl], exhibited optical limiting behavior better than C60 and comparable to the state-of-the-art phthalocyanine dye, Chloro-(tetra-(tert-butyl)phthalocyanato)indium (III), [Pc(t-Bu)_InCl]. Furthermore, the samples with photopic transmissions as high as 75% were tested under the same laser setup and [TPP(4-CCTMS)_InCl] again demonstrated its efficient optical limiting, which is comparable to that of C60 and much better than that of [Pc(t-Bu)_InCl].

Paper Details

Date Published: 14 February 2003
PDF: 8 pages
Proc. SPIE 4797, Multiphoton Absorption and Nonlinear Transmission Processes: Materials, Theory, and Applications, (14 February 2003); doi: 10.1117/12.447935
Show Author Affiliations
Guo Ying Yang, DSO National Labs. (Singapore)
Leng Leng Chng, DSO National Labs. (Singapore)
Yiew Wang Lee, DSO National Labs. (Singapore)
Wei Pin Lau, DSO National Labs. (Singapore)
Kin Seng Lai, DSO National Labs. (Singapore)

Published in SPIE Proceedings Vol. 4797:
Multiphoton Absorption and Nonlinear Transmission Processes: Materials, Theory, and Applications
A. Todd Yeates; Christopher M. Lawson; Kevin D. Belfield; Stephen J. Caracci; Francois Kajzar; A. Todd Yeates; Kevin D. Belfield; Stephen J. Caracci, Editor(s)

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