Ferrocene-Grafted Photochromic Triads Based on a Sterically Hindered Ethene Bridge: Redox-Switchable Fluorescence and Gated Photochromism
Cai, Y; Gao, Ya; Luo, Q; Li, M; Zhang, J; Tian, He; Zhu, WeiH
| HERO ID | 3575477 |
|---|---|
| In Press | No |
| Year | 2016 |
| Title | Ferrocene-Grafted Photochromic Triads Based on a Sterically Hindered Ethene Bridge: Redox-Switchable Fluorescence and Gated Photochromism |
| Authors | Cai, Y; Gao, Ya; Luo, Q; Li, M; Zhang, J; Tian, He; Zhu, WeiH |
| Volume | 4 |
| Issue | 9 |
| Page Numbers | 1410-1416 |
| Abstract | Multifunctional switches, as well as gated photochromism, are particularly challenging. Here, a ferrocene (Fc)-modified photochromic diarylethene (DAE) with sterically hindered ethene bridge, in which the photo-inactive parallel conformer and photoactive antiparallel conformer are individually investigated, is reported. The photoswitchable triad system (parallel conformer p-Fc and anti-parallel ap-Fc) contains three functional parts: photochromic DAE unit, naphthalimide chromophore, and redox-active ferrocene. Upon incorporation of ferrocene unit, the photochromic efficiency in the anti-parallel triad conformer ap-Fc is blocked to a great extent in the ferrocene state but distinctly enhanced in the ferrocenium state via chemical or electrochemical stimuli, thereby constructing redox-gated photochromism. Meanwhile, the reversible redox between ferrocene and ferrocenium states can also switch "OFF/ON" the fluorescence of naphthalimide chromophore via photoinduced electron transfer pathway (PET). The fluorescence and photoisomerization in the triad system are well modulated with chemical-or electrochemical redox and light stimuli, which enables the specific gated photochromism and fluorescence switches work in multi-addressable states. |
| Doi | 10.1002/adom.201600229 |
| Wosid | WOS:000386351200014 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Journal:ADVANCED OPTICAL MATERIALS 2195-1071 |
| Is Public | Yes |