A Novel Unsymmetrical Photochromic Diarylethene

摘要:

文章预览

A novel unsymmetrical diarylethene derivative bearing both phenyl and thiophene moieties, in which a chlorine group was substituted at the para-positions of the terminal phenyl ring, was synthesized. At the same time, its photochromic properties and fluorescence switch were investigated in detail. The results showed that this compound exhibited reversible photochromism, undergoing reversible cyclization and cycloreversion reactions upon alternating irradiation with UV and visible light both in solution and in PMMA film, and its absorption maxima were observed at 541 nm in hexane and at 550 nm in PMMA amorphous film, respectively, upon irradiation with 297 nm UV light. The fluorescence intensity of diarylethene decreased dramatically along with the photochromism from open-ring isomer to closed-ring isomer upon irradiation with 297 nm UV light in PMMA. In hexane solution, the open-ring isomer of the diarylethene 1 exhibited relatively strong fluorescence at 462 nm when excited at 316 nm.

信息:

期刊:

编辑:

Garry Zhu

页数:

1519-1522

DOI:

10.4028/www.scientific.net/KEM.474-476.1519

引用:

W. J. Liu et al., "A Novel Unsymmetrical Photochromic Diarylethene", Key Engineering Materials, Vols. 474-476, pp. 1519-1522, 2011

上线时间:

April 2011

输出:

价格:

$35.00

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