Spectroscopic and nonlinear optical properties of the four positional isomers of 4α-(4-tert-butylphenoxy)phthalocyanine. Issue 41 (23rd September 2015)

• Record Type: Journal Article
• Authors: Ngubeni, Grace N.; Britton, Jonathan; Mack, John; New, Edward; Hancox, Ian; Walker, Marc; Nyokong, Tebello; Jones, Tim S.; Khene, Samson
• Is Part Of: Journal of materials chemistry. Volume 3:Issue 41(2015)
• Page Start: 10705
• Page End: 10714
• Publication Date: 2015-09-23
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c5tc01601k
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : An enhanced NLO response in terms of both the β and γ values was observed for C 4h isomer compared to the other isomers, smallest NLO response were observed for the C 2v and C s isomers, respectively. Abstract : The spectroscopic and nonlinear optical properties of the positional isomers of metal free 4α-(4- tert -butylphenoxy) phthalocyanine are presented. Second order nonlinear polarizability ( β ), imaginary hyperpolarizability (Im( γ )) and imaginary susceptibility (Im[ χ (3) ]) values were determined for the four positional isomers. The measured β values of the four isomers displayed the following trend, C 4h (34.0 × 10 −5 m MW −1 ) > D 2h (28.8 × 10 −5 m MW −1 ) > C 2v (22.8 × 10 −5 m MW −1 ) > C s (13.7 × 10 −5 m MW −1 ).