Open AccessPhotophysical properties and optical limiting property of a soluble chloroaluminum-phthalocyanine
Author(s) -
Quan Gan,
Shayu Li,
Fabrice MorletSavary,
Shuangqing Wang,
S. C. Shen,
Huijun Xu,
Guoqiang Yang
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.005424
Subject(s) - materials science , absorption (acoustics) , luminescence , phthalocyanine , photochemistry , excited state , optoelectronics , optics , limiting , spectroscopy , laser , excitation , absorption spectroscopy , chemistry , nanotechnology , atomic physics , physics , mechanical engineering , quantum mechanics , engineering , composite material
A chloroaluminum-phthalocyanine (AlCl-Pc) with tetra-alpha-butoxy chains (AlCl-Pc-OC4) has been synthesized and the photophysical parameters have been determined using steady-state and time-resolved absorption as well as emission spectroscopy. A luminescence from S2 excited state with long lifetime (5.71ns) is observed. A multi level model has been proposed to explain the photophysical processes after Soret-band excitation (lambdaex=355nm). The optical limiting performance for 532nm-7ns laser pulses of AlCl-Pc-OC4 has been investigated in THF solution. The sigmaex and ratio of sigmaex/sigma0 has been calculated. The good optical limiting performance is attributed to a reverse saturable absorption mechanism. It indicates that AlCl-Pc-OC4 could be promising candidates for optical limiting material.