Hydrothermal Synthesis of Photoluminescent Nanocarbon from Hydroxylic Acids and Amines

Design of Pyrrolic-N-Rich Carbon Dots with Absorption in the First Near-Infrared Window for Photothermal Therapy

“…Furthermore, the fact that the intensity of the NIR absorption centered at 650 nm is much lower than those of the main characteristic peaks at 250 and 365 nm (Figures S2 and S3) indicates that NIR absorption does not originate from the main CDs structure. The main characteristic absorption centered at 250 nm has been known to originate from the main structure of the CDs (conjugate sp 2 C), − while the much lower absorption peak in the first NIR window range might originate from the CD surface functional groups. The absorption in the longer wavelength that might derive from the CD surface functional groups was also observed much lower than the main characteristic absorption in other reports. ,, The higher height size of CDs-650 might be ascribed to disruption of planar sp 2 carbon structure due to the enriched pyrrolic-N groups. , …”

“…In this range, high tissue penetration can be achieved without damaging biological specimens and surrounding living tissues because of the low absorptivity of most tissue chromophores (e.g., oxyhemoglobin, deoxyhemoglobin, melanin, and fat) in this wavelength range . However, the use of CDs in PTT is still a challenge because CDs absorb mainly in the ultraviolet (UV) range. − …”

Effects of poly(propylene carbonate) additive prepared from carbon dioxide on the tensile properties of polypropylene

“…The biocompatibility of CDs has been established, and much attention has been paid to their applications in biological fields such as bioimaging and drug‐delivery systems . Various synthesis methods have also been developed, including laser ablation, electrochemical oxidation, hydrothermal, and microwave‐assisted pyrolysis . In this work, we used microwave pyrolysis, because this method provides a simple and efficient route to CDs.…”