Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 5, Issue 11, Pages 4511-4515Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am400169v
Keywords
polyfluorene; conjugated polyelectrolyte; oligopeptide; click reaction; cellular imaging
Funding
- Temasek Defence Systems Institute [ARF R-279-000-305-592/422/232]
- Singapore Ministry of Defense [R279-000-340-232]
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We report a facile yet efficient strategy to synthesize biofunctionalized conjugated polyelectrolyte using click reaction between an amphiphilic oligopeptide (R10) and organic soluble polyfluorene (PF) as an example. PF-R10 shows the absorption and emission maxima at similar to 380 and similar to 430 nm in water, respectively. In addition, it exhibits enhanced fluorescence in acidic circumstance as compared to that in neutral environment because of reduced aggregation, which is confirmed by laser light scattering and atomic force microscopy studies. In view of the penetration property of the grafted R10 peptide, PF-R10 shows excellent cell uptake and labeling ability in cellular imaging.
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