| 초록 |
Poly(N-isopropylacrylamide) (PNIPAM) nanogel is quite sensitive, reversible and reproducible to thermal stimulation, in contrast to that of other polymers. The polymer chains show an expanded conformation in water below the LCST due to strong hydration, and change to compact forms above the LCST by dehydration. Thus, PNIPAM nanogel have found numerous biomedical applications, such as drug delivery, biosensing, and so on. Carbon nanodots (C-dots) fascinating class of recently discovered nanocarbons that quasispherical shape with size below 10 nm. C-dots have great potential in biomedical and optoelectrinic applications. In this work, we prepared a core-shell nanogel based on C-dots and dye-labeled PNIPAM which was responsive to temperature as a dual emissive hybrid material. When the temperature is lower than LCST, the polymer chains are relatively extended conformation. Above the LCST, the polymer chains collapse, resulting in the C-dots and fluorescein emission will be changed. |
