Influence of blue valence absorption band on nonlinear absorption in dysprosium bisphthalocyanine studied by open aperture z-scan

Autor:	Alexey B. Karpo, Victor E. Pushkarev, Larisa G. Tomilova, V. I. Krasovskii, Anton Zasedatelev
Rok vydání:	2013
Předmět:	Valence (chemistry) Absorption spectroscopy Analytical chemistry General Physics and Astronomy chemistry.chemical_element Laser law.invention Q band chemistry Absorption band law Excited state Dysprosium Z-scan technique Physical and Theoretical Chemistry
Zdroj:	Chemical Physics Letters. 585:153-156
ISSN:	0009-2614
DOI:	10.1016/j.cplett.2013.08.108
Popis:	Study of the optical limiting (OL) effect in a THF solution of bis(2,3,9,10,16,17,23,24-octabutylphthalocyaninato) dysprosium(III) ( Bu Pc 2 Dy) by the open aperture z-scan technique with 350 ps laser pulses at 532 nm is presented. The presence of the blue valence (BV) band in UV-Vis absorption spectra of bisphthalocyanines (bisPcs) adds complexity to the nonlinear absorption behavior. Luminescence measurements showed that two channels of excitation exist for Bu Pc 2 Dy when illuminating at 532 nm. We suggest a new theoretical model which describes the interaction of a bisPc with an intense laser pulse at 532 nm. Excited state lifetimes and the Q band quantum yield were also determined.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::96394e6a3890d618acd5f4fd488ee180 https://doi.org/10.1016/j.cplett.2013.08.108 Zobrazit plný text záznamu Full Text from ScienceDirect