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- Title
Preparation of a pH-sensitive polystyrene fluorescent microsphere based on a cyanine dye.
- Authors
Yu, Liang; Wang, Qiuling; Li, Tingting; Chen, Ligong
- Abstract
A novel pH-sensitive near-IR (NIR) fluorescent dye was synthesised and utilised in the preparation of fluorescent polystyrene microspheres. Their photochemical properties, as well as the pH-dependent optical properties were investigated and showed high sensitivity to changes of pH in the range of 3.3-8.1. The fluorescence became stronger with the increase in pH. Importantly, the microspheres were able to work in aqueous media, which is highly valuable for use in biological applications.
- Subjects
CYANINES; FLUORESCENCE; HYDROGEN-ion concentration; POLYSTYRENE; LUMINESCENCE; STYRENE
- Publication
Journal of Chemical Research, 2012, Vol 36, Issue 11, p632
- ISSN
1747-5198
- Publication type
Article
- DOI
10.3184/174751912X13466874476971