Near-infrared emission carrier, Er3+-doped ZnAl-LDH, for delivery and release of ibuprofen in vitro

Eu‐doped ZnAl‐LDH as a Fluorescent Labeling Carrier for the Delivery and Controlled Release of Camptothecin

“…There are some characteristic strong bands at 1600 cm −1 (−NH), 1741 cm −1 (C=O stretching vibration of lactone ring), and 1650 cm −1 (C=O stretching vibration of ketone groups) in the spectrum of pure CPT [2] . For the ZnAl‐Eu‐LDH, the bands at ∼3460 and 1625 cm −1 are attributed to −O−H stretching and bending vibrations of LDH layers and adsorbed water, respectively; the strong band at 1383 cm −1 was ascribed to NO 3 − ; [48] and some weak bands at 830, 610, and 427 cm −1 are due to metal‐O bonds [49] . However, some weak bands (1650, 1580, 1498, and 1242∼1009 cm −1 ) ascribed to CPT and some bands (3436, 1380, and 593 cm −1 ) ascribed to ZnAl‐Eu‐LDH simultaneously appeared in the IR spectrum of ZnAl‐Eu‐CPT, suggesting the incorporation of CPT into the Eu‐doped ZnAl‐LDH.…”

“…À ; [48] and some weak bands at 830, 610, and 427 cm À 1 are due to metal-O bonds. [49] However, some weak bands (1650, 1580, 1498, and 1242 ∼ 1009 cm À 1 ) ascribed to CPT and some bands (3436, 1380, and 593 cm À 1 ) ascribed to ZnAl-Eu-LDH simultaneously appeared in the IR spectrum of ZnAl-Eu-CPT, suggesting the incorporation of CPT into the Eu-doped ZnAl-LDH. Meanwhile, the strong band at 1741 cm À 1 assigned to C=O stretching vibration of lactone ring disappeared in the IR spectrum of ZnAl-Eu-CPT, which is due to the lactone ring opened under alkaline conditions.…”

Sandwich-like NiCo-LDH/rGO with rich mesopores and high charge transfer capability for flexible supercapacitors

“…8 Layered double hydroxides (LDHs), as a new type of twodimensional material, have attracted much attention in the fields of drug release, electrocatalysis, and energy storage due to their high electrochemical activity, relatively low cost, and adjustable composition. [9][10][11] However, serious agglomeration, low electrical conductivity, and poor cycling stability always restrict the application of LDHs in the direction of supercapacitors. 12 For the agglomeration problem of LDHs, the optimal solution is to load LDHs on some substrates, such as nickel foam, 13,14 carbon cloth, 15 and carbon fiber paper.…”