The Electronic and Non-linear Optical Properties of Oxo-titanium Phthalocyanines

The valence electronic properties of some unsubstituted and peripherally substituted oxo-titanium phthalocyanines are reported. Semiempirical quantum chemical calculations show that the nature of peripheral substituents has a strong bearing on the valence electronic properties, including the state dipole moments and absorption wavelength. The non-linear optical response was measured around the the Q-band resonance. The effect of different substituents and substitution patterns on the non-linear behaviour of the samples was determined. The combined results suggest that tuning of electronic and optical properties is effectively achieved by functionalization of the edges of the conjugated ring.

[1]  Paul A. Fleitz,et al.  Nonlinear Optics of Organic Molecules and Polymers , 1997 .

[2]  R. A. Collins,et al.  Gas sensitivity of some metal phthalocyanines , 1988 .

[3]  Hugh J. Byrne,et al.  Reverse saturable absorption in tetraphenylporphyrins , 1985 .

[4]  H. Nalwa,et al.  Third-order nonlinear optical properties of polymorphs of oxotitanium phthalocyanine , 1993 .

[5]  E. W. Stryland,et al.  Sensitive Measurement of Optical Nonlinearities Using a Single Beam Special 30th Anniversary Feature , 1990 .

[6]  J. Strähle,et al.  Polymorphie, Leitfähigkeit und Kristallstrukturen von Oxo-phthalocyaninato-titan(IV) , 1982 .

[7]  C. Slichter,et al.  NMR evidence of temperature-dependent structural changes of the CO adlayer on supported Pd clusters , 1993 .

[8]  Michael C. Zerner,et al.  Triplet states via intermediate neglect of differential overlap: Benzene, pyridine and the diazines , 1976 .

[9]  Hannah Schultz,et al.  Phthalocyaninatometal and related complexes with special electrical and optical properties , 1990 .

[10]  Michael Hanack,et al.  Conducting Stacked Metallophthalocyanines and Related Compounds , 1994 .

[11]  H. Nalwa.  Handbook of organic conductive molecules and polymers , 1997 .

[12]  C. Sirlin,et al.  Mesomorphic molecular materials for electronics, opto-electronics, iono-electronics: Octaalkyl-phthalocyanine derivatives , 1989 .

[13]  M. Hanack,et al.  Soluble Octasubstituted (Phthalocyaninato) Metal Complexes , 1995 .

[14]  H. Nalwa,et al.  Third-order non-linear optical properties of donor- and acceptor-substituted metallophthalocyanines , 1995 .

[15]  S. Roth,et al.  Langmuir-Blodgett film formation of a series of peripherally octasubstituted metallophthalocyanines , 1994 .

[16]  Werner J. Blau,et al.  Intensity-dependent absorption and resonant optical nonlinearity of C60 and C70 solutions , 1992 .

[17]  S. Roth,et al.  Well-organized phthalocyanine Langmuir-Blodgett films incorporated into symmetrical (metal/thin organic film/metal) sandwich structures , 1994 .

[18]  M. Hanack,et al.  Synthesis of Unsymmetrically Octaalkoxy-Substituted Nickel, Palladium and Platinum Phthalocyanines , 1995 .