Synthesis and characterization of nitrogen-doped carbon dots as fluorescent nanoprobes with antimicrobial properties and skin permeability
Yükleniyor...
Tarih
2020
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Nitrogen doped carbon dots (N-doped C-dots) were prepared using polyethyleneimine (PEI) and citric acid (CA) as precursors via the hydrothermal method. Various weight ratios of PEI and CA, 1:0.5, 1:1, and 1:2, were used in the synthesis of N-doped C-dots. The N-doping of prepared C-dots was confirmed with an FT-IR peak that was observed at 1652 cm(-1) assigned to N-H bending. The hydrodynamic diameters of prepared N-doped C-dots were 70.2 +/- 6.9, 32.2 +/- 4.7, and 11.5 +/- 3.1 nm by DLS measurements, and surface charges values were 1.32 +/- 0.8, 0.14 +/- 0.2, and -1.57 +/- 0.7 mV, for 1:0.5, 1:1, and 1:2 wt ratio based on PEI of CA, respectively. A high quantum yield 53 +/- 4.8% according to quinine sulfate standard was determined for 1:1 C-dot prepared from 1:1 wt ratio of PEI:CA. The C-dots were found to inhibit growth of both Gram-negative and Gram-positive bacteria with no noted toxicity to mammalian cells in vitro. Skin permeation studies indicate that the particles permeate into and through the dermis within hours, indicating their potential use for topical administration.
Açıklama
Anahtar Kelimeler
Carbon dots, Antimicrobial, Skin permeability, Biocompatible particles
Kaynak
Journal of Drug Delivery Science and Technology
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
59
