期刊
POLYMER CHEMISTRY
卷 5, 期 6, 页码 2094-2102出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3py01296d
关键词
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资金
- Intelligence Community Postdoctoral Program
- Nano-Enabled Technology Initiative [20070922615000]
- NSF CAREER Award [DMR 0953112]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0953112] Funding Source: National Science Foundation
Photochromic molecules can be used to selectively bind divalent metal ions. In order to study the influence of increased chelation in spiropyran-containing copolymers, we synthesized two derivatives: spiropyran methacrylate (SPMA) and spiropyran methacrylate with a methoxy substituent in the 8' position of the benzopyran ring (MEO). Additionally, the comonomer with which spiropyran was polymerized is also varied between methyl methacrylate (MMA) and 2,2,2-trifluoroethyl methacrylate (TFEMA) to tune the colorimetric response. Fourier transform-infrared (FT-IR) spectroscopy was used to characterize the photoinduced conversion of spiropyran to merocyanine, as well as the merocyanine-metal ion (MC-M2+) interaction. By means of UV-Vis absorption spectroscopy, we demonstrate that each metal ion gives rise to a unique colorimetric response for the various spiropyran-containing copolymers studied.
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