ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

The optical properties of a novel metal-free phthalocyanine

Ahmet Şirin, Esra Özkan Zayim, and B. Şebnem Sesalan

İstanbul Technical University, Istanbul, Turkey

E-mail: behice2000@yahoo.com

Abstract: In the present work, 4-(4′-dodecyloxycarbonyl) phenoxy phthalonitrile was synthesized and then this phthalonitrile derivative was cyclotetramerized in dodecanol resulting a new metal-free phthalocyanine. The optical properties of this phthalocyanine were investigated. Novel metal-free phthalocyanine thin films were deposited on indium tin oxide-coated glass substrates by spinning method. Surface and microstructural properties of the films were characterized by atomic force microscopy and scanning electron microscopy. Both the transmittance and reflectance spectra of the deposited films were recorded using an NKD analyser. The optical band gap energy, the thickness of thin films, refractive index (n) and extinction coefficient (k) were calculated as 2.7 eV, 300 nm, 1.47 and 0.02, respectively.

Keywords: Metal-free phthalocyanine; Synthesis; Thin film; Optical properties; Conductive material

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-017-0203-y

Chemical Papers 71 (11) 2107–2115 (2017)