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Optical Engineering

Amplified spontaneous emission from 2,7-bis(4-pyridyl)fluorene-doped DNA-cetyltrimethyl ammonium complex films
Author(s): Xiuhua Zhao; Xing Li; Yayun Zhao; Jie Zhang; Jianguo Pan; Jun Zhou
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Paper Abstract

The 2,7-bis(4-pyridyl)fluorene (BPF) was synthesized via a Suzuki coupling reaction. The optical spectra properties of BPF and BPF-deoxyribonucleic acid (DNA)-cetyltrimethyl ammonium (CTMA) thin films composed of BPF, DNA, and CTMA were characterized by the measurements of UV/Vis absorption spectra and fluorescence spectra. The amplified spontaneous emission (ASE) of the BPF-DNA-CTMA films was researched experimentally by pumping of a pulse laser with a wavelength of 355 nm. The results show that the absorption peak and the fluorescence peak of BPF are located at 327 and 380 nm, respectively. The emission peak of BPF corresponds to the vibronic transitions from an excited state of S 1 level to the ground state of S 0 level. The ASE peak of the BPF-DNA-CTMA film is located at 384 nm, and the threshold of ASE excited energy density is 3.12  mJ⋅cm −2 .

Paper Details

Date Published: 28 October 2013
PDF: 7 pages
Opt. Eng. 52(10) 106109 doi: 10.1117/1.OE.52.10.106109
Published in: Optical Engineering Volume 52, Issue 10
Show Author Affiliations
Xiuhua Zhao, Ningbo Univ. (China)
Xing Li, Ningbo Univ. (China)
Yayun Zhao, Ningbo Univ. (China)
Jie Zhang, Ningbo Univ. (China)
Jianguo Pan, Ningbo Univ. (China)
Jun Zhou, Ningbo Univ. (China)

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