Characterization and investigation of NLO properties of electrodeposited polythiophenes

V. FigÃ; J. Luc; B. Kulyk; M. Baitoul; B. Sahraoui

doi:10.2971/jeos.2009.09016

Journal of the European Optical Society - Rapid publications, Vol 4 (2009)

Characterization and investigation of NLO properties of electrodeposited polythiophenes

V. FigÃ , J. Luc, B. Kulyk, M. Baitoul, B. Sahraoui

Abstract

In this work we study the electronic properties of ClO4- doped polythiophenes and discuss the nonlinear optical properties of these organic compounds galvanostatically electrodeposited on ITO glasses. The investigation on the electronic properties (band gap, flat band potential) was performed by means of a non-destructive optical technique, photocurrent spectroscopy (PCS). The investigation on the nonlinear optical response was carried out by means of second and third harmonic generation measurements. In particular, the effect of the oxidation state of the polymeric films was studied by comparing the NLO response of oxidized and reduced polythiophenes. Reduced polymeric films show higher values of the second (Ï‡<2>) and third (Ï‡<3>) order nonlinear susceptibilities.

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References

A. Migalska-Zalas, J. Luc, B. Sahraoui, and I. V. Kityk, "Kinetics of third-order nonlinear optical susceptibilities in alkynyl ruthenium complexes" Opt. Mater. 28, 1147-1151 (2006).

J. Luc, J. L. Fillaut, J. Niziol, and B. Sahraoui, "Large third-order nonlinear optical properties of alkynyl ruthenium chromophore thin films using third harmonic generation" Adv. Mater. 9, 2826- 2832 (2007).

J. Luc, A. Migalska-Zalas, S. Tkaczyk, J. Andriès, J-L. Fillaut, A. Meghea, and B. Sahraoui, "Nonlinear optical effects in new alkynyl-ruthenium containing nanocomposites" Adv. Mater. 10, 29-43 (2008).

B. Kulyk, Z. Essaidi, J. Luc, Z. Sofiani, G. Boudebs, B. Sahraoui, V. Kapustianyk, and B. Turko, "Second and third order nonlinear optical properties of microrod ZnO films deposited on sapphire substrates by thermal oxidation of metallic zinc" J. Appl. Phys. 102, 1-6 (2007).

W. Bi, N. Louvain, N. Mercier, J. Luc, I. Rau, F. Kajzar, and B. Sahraoui, "A switchable NLO organic-inorganic compound based on conformationally chiral disulfide molecules and Bi(I I I)I5 iodobismuthate networks" Adv. Mater. 20, 1013-1017 (2008).

J. Roncali, "Conjugated poly(thiophenes): Synthesis, functionalization, and applications" Chem. Rev. 92, 711-738 (1992).

P. N. Prasad, J. Swiatkiewicz, and J. Pfleger, "Resonant nonlinear optical processes and charge carrier dynamics in photoresponsive polymers" Mol. Cryst. Liq. Cryst. 160, 53-68 (1988).

V. H. Houlding, A. Hahata, J. T. Yardley, and R. L. Elsenbaumer, "Optical third harmonic response of amorphous poly(3-methyl-4'- octyl-2,2'-bithiophene-5,5'-diyl) thin films" Chem. Mater. 2, 169- 172 (1990).

U. Gubler and C. Bosshard, "Optical third-harmonic generation of fused silica in gas atmosphere: Absolute value of the third-order nonlinear optical susceptibility ch3i" Phys. Rev. B 61, 10702-10710 (2000).

F. Kajzar, Y. Okada-Shudo, C. Meritt, and Z. Kafafi, "Second- and third-order non-linear optical properties of multilayered structures and composites of C60 with electron donors" Synth-Int. J. Methods 117, 189-193 (2001).

Yu. V. Pleskov and Yu. Ya. Gurevich, Semiconductor Photoelectrochemistry (Consultants Bureau, New York, 1986).

H. Gerisher, "The impact of semiconductors on the concepts of electrochemistry" Electrochim. Acta 35, 1677-1699 (1990).

A. K. Bakhshi and S. Kaul, "Strategies for molecular designing of novel low band gap electrically conducting polymers" Appl. Biochem. Biotech. 96, 125-133 (2001).

V. Figà, J. Luc, M. Baitoul, and B. Sahraoui, "NLO properties of polythiophenes galvanostatically electrodeposited on ITO glasses" Adv. Mater. 10, 2123-2128 (2008).

G. J. Lee, S. W. Cha, S. J. Leon, J. I. Jin, andJ. S. Yoon, "Second order nonlinear properties of unpoled bent molecules in powder and in vacuum deposited film" J. Korean Phys. Soc. 39, 912-915 (2001).

R. A. Myers, N. Mukherjee, and S. R. J. Brueck, "Large second-order nonlinearity in poled fused silica" Opt. Lett. 16, 1732-1734 (1991).

K. Kubodera and H. Kobayashi, "Determination of third-order nonlinear optical susceptibilities for organic materials by third harmonic generation" Mol. Cryst. Liq. Cryst. 182, 103-113 (1990).

B. Sahraoui, X. Nguyen Phu, M. Sallé, and A. Gorgues, "Electronic and nuclear contributions to the third-order nonlinear optical susceptibilities of new p-N,N'-dimethylaniline tetrathiafulvalene derivatives" Opt. Lett. 23, 1811-1813 (1998).

B. Derkowska, J. C. Mulatier, I. Fuks, B. Sahraoui, X. Nguyen Phu, and C. Andraud, "Third order optical nonlinearities in new octopolar molecules and their dipolar subunits" J. Opt. Soc. Am. B 18, 610-616 (2001).

B. Sahraoui, G. Rivoire, J. Zaremba, N. Terkia-Derdra, and M. Sallé, "The third-order nonlinear optical properties of new bis dithiafulvenyl substituted tetrathiafulvalene" J. Opt. Soc. Am. B 15, 923-928 (1998).