Gex 600

The SWNTs, ADP + SWNT and ADP@SWNT samples were dispersed in distilled water. The dispersion liquid was stirred for 30 min (the concentration of each sample was 1 mg/mL) and allowed to stand. A Shimadzu ultraviolet–visible (UV–vis) spectrophotometer was used to measure the absorbance at 500 nm of each dispersion liquid. SWNTs were dispersed in an ADP solution (1 mg/mL) by the ultrasonic dispersion method (Sigma Ultrasonic Processor, GEX‐600) (130 W, 50 Hz, 50%, 30 min). Subsequently, the suspension was centrifuged at 5000 rpm for different durations (0, 2, 5, 10, 20, and 30 min), and the centrifuged samples were measured at 500 nm by a Shimadzu UV–vis spectrophotometer.
Transmission electron microscopy (TEM) observation: A 20‐μL drop of SWNT solution and ADP@SWNT solution were placed on a 200‐mesh copper grid covered with a perforated carbon film and allowed to dry naturally for 60 s. The excess copper was drawn off gently with filter paper. The copper grid with samples on it was stained with 2% (w/v) phosphotungstic acid solution for 60 s, and filter paper was used to remove the residual solution. Then, the sample was imaged using TEM (JEM‐2010HR).

ADP@SWNT was synthesized by ultrasonic approaches. Briefly, 5 mg of SWNTs were placed in 10 mL of distilled water and sonicated using an ultrasonic probe (Sigma Ultrasonic Processor, GEX‐600). This process proceeded at 30 W for 20 min, during which each pulse lasted for 2 s followed by 2 s of rest. Sonication was repeated three times with a 10‐min suspension each time. Next, 10 mg of ADP was added to the above solution and sonicated for 30 min at 130 W, 50 Hz, and 50%. Similarly, the pulse width was 2 s (pulse period of 4 s), and this step was repeated three times with a 10‐min suspension each time. The resulting suspension was stirred for 12 h and centrifuged at 3000 r/s for 10 min, followed by filtration and lyophilization procedures. Finally, the inclusion complex, a PLLD‐G3‐based functionalized amylose derivative loaded with SWNTs, was obtained, with a yield of 47%. Infrared spectra were measured via the KBr squash method using an FTIR spectrophotometer (Nicolet 670, Thermo Nicolet Corporation, Wisconsin, USA). ¹H NMR analyses (Mercury‐Plus 300 Varian, USA) for the PLLD‐G3, Amy‐N3, ADP and ADP@SWNT dispersions were used to confirm the formation of ADP@SWNT. Circular dichroism (CD) spectra measurements of the ADP, SWNTs, PLLD‐G3, ADP + SWNT and ADP@SWNT dispersions (1 mg/mL) were carried out using a J‐810 circular dichroism spectropolarimeter (Jasco, Easton, MD, USA).