Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| Photodegradation of cyanine and merocyanine dyes | |
| Yang, SJ; Tian, H; Xiao, HM; Shang, XH; Gong, XD; Yao, SD（姚思德）; Chen, KC | |
| 2001 | |
| Source Publication | DYES AND PIGMENTS
 |
| ISSN | 0143-7208 |
| Volume | 49Issue:2Pages:93 |
| Abstract | The photodegradation kinetics for some cyanine and merocyanine dyes was studied by UV-visible spectroscopy and the results show that the fading process follows quasi-first-order or zero-order kinetics in acetonitrile. In other experiments, the principal photodegradation products of the dyes were identified with the aid of GC/MS, and it was found that those cyanine dyes holding a positive charge had higher photostability than the corresponding merocyanines. The relationship between photostability and chemical structure was established using PM3 and AMI MO calculations. Experimental results in this regard suggest that the species associated with the photodegradation of cyanine dyes may be the semioxidized dye free radical cation, Dye(dagger). The transient absorption spectra of Dye(dagger) were determined by nanosecond pump and probe spectroscopy. (C) 2001 Elsevier Science Ltd. All rights reserved. |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 应物所项目组 |
| WOS ID | WOS:000168931600003 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/10098 |
| Collection | 中科院上海原子核所2003年前 |
| Recommended Citation GB/T 7714 | Yang, SJ,Tian, H,Xiao, HM,et al. Photodegradation of cyanine and merocyanine dyes[J]. DYES AND PIGMENTS,2001,49(2):93. |
| APA | Yang, SJ.,Tian, H.,Xiao, HM.,Shang, XH.,Gong, XD.,...&Chen, KC.(2001).Photodegradation of cyanine and merocyanine dyes.DYES AND PIGMENTS,49(2),93. |
| MLA | Yang, SJ,et al."Photodegradation of cyanine and merocyanine dyes".DYES AND PIGMENTS 49.2(2001):93. |
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