کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1311537 | 1499210 | 2008 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Photoprocesses and magnetic behavior of photochromic transition metal indoline[phenanthrolinospirooxazine] complexes: Tunable photochromic materials Photoprocesses and magnetic behavior of photochromic transition metal indoline[phenanthrolinospirooxazine] complexes: Tunable photochromic materials](/preview/png/1311537.png)
We have synthesized a series of M(IPSO)3(BPh4)2 complexes consisting of first row transition metals and a photochromic phenanthroline ligand: (M = Mn(II), Fe(II), Co(II), Ni(II), Zn(II), and Cu(II), IPSO = spiro[indole-phenanthrolinoxazine]). The optical properties associated with photochromic behavior were evaluated by determination of the (i) equilibrium constants (K) for the thermal and photostationary states, (ii) rates of photochemical ring-opening and ring-closure, and (iii) rates of thermal ring-closure. The photocolorability values associated with conversion from the colorless spirooxazine to the colored photomerocyanine isomer are greatly enhanced upon metal coordination. Variable temperature magnetic susceptibility experiments suggest deviations from cubic symmetry associated with desymmetrization induced by a dependence of ligand field strength on the photochromic state of IPSO.
We have synthesized a series of M(IPSO)3(BPh4)2 complexes consisting of first row transition metals and a photochromic phenanthroline ligand: (M = Mn(II), Fe(II), Co(II), Ni(II), Zn(II), and Cu(II), IPSO = spiro[indole-phenanthrolinoxazine]). The optical properties associated with photochromic behavior were evaluated by determination of the (i) equilibrium constants (K) for the thermal and photostationary states, (ii) rates of photochemical ring-opening and ring-closure, and (iii) rates of thermal ring-closure. The photocolorability values associated with conversion from the colorless spirooxazine to the colored photomerocyanine isomer are greatly enhanced upon metal coordination. Variable temperature magnetic susceptibility experiments suggest deviations from cubic symmetry associated with desymmetrization induced by a dependence of ligand field strength on the photochromic state of IPSO.Figure optionsDownload as PowerPoint slide
Journal: Inorganica Chimica Acta - Volume 361, Issues 12–13, 1 September 2008, Pages 3570–3576