Reversible three-state switching of luminescence: A new twist to electro and photochromic behavior
Reversible three-state switching of luminescence: A new twist to electro and photochromic behavior
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DOI：
10.1021/ja064423y
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发表时间：
2006-09-27
影响因子：
15
通讯作者：
Feringa, Ben L.
中科院分区：
文献类型：
--
作者：
Browne, Wesley R.;Pollard, Michael M.;Feringa, Ben L.
报道了光致变色/电致变色取代双噻吩基苯乙烯的完全可逆三态蓝/红/灭发射。二甲氧基和二甲氧基双噻吩基的最稳定（反折叠）构象的蓝色发光可以通过光化学转化为亚稳定（同步折叠）构象而关闭，并通过热还原为反折叠状态而再次打开。双thiaxanthyum的红色发光可以分别在合折叠构象和反折叠构象的~ 1.0和1.2 V vs SCE下氧化开启，在~ 0.35 V vs SCE下还原关闭或变为蓝色。
The fully reversible three-state blue/red/off emission from photo-/electrochromic substituted bis-thiaxanthylidenes is reported. The blue luminescence of the most stable (anti-folded) conformer of dimethyl- and dimethoxy-bis-thiaxanthylidene can be switched off by photochemical conversion to the meta-stable (syn-folded) conformer and switched on again by thermal reversion to the anti-folded state. The red luminescence of the bis-thiaxanthylium dication can be switched on by oxidation at ∼1.0 and 1.2 V vs SCE of the syn- and anti-folded conformers respectively and switched off or to blue by reduction at ∼0.35 V vs SCE.