Phosphorescence of Carbon Dot: The Intrinsic Mechanism and Recent Progress

Zuo, Kun; Liu, Weifeng; Liu, Xiaojing; Liu, Xuguang

doi:10.1016/j.cartre.2023.100278

Cited by 7 publications

(2 citation statements)

References 127 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Typically, the characteristic peak around 284.5 eV is assigned to the carbon in graphitic structures . The increase in the intensity of the C–O and CO peaks in GNDs relative to that in pristine graphite confirms the generation of −COOH and −OH groups during the chemical oxidation and cutting process . For the fine spectra of O 1s in Figure f, the peaks at 532.8 and 531.5 eV suggest that oxygen appears mainly in the forms of CO and C–OH/C–O, respectively.…”

Section: Resultsmentioning

confidence: 85%

“…39 The increase in the intensity of the C−O and C�O peaks in GNDs relative to that in pristine graphite confirms the generation of −COOH and −OH groups during the chemical oxidation and cutting process. 40 For the fine spectra of O 1s in Figure 2f, the peaks at 532.8 and 531.5 eV suggest that oxygen appears mainly in the forms of C�O and C−OH/C−O, respectively. All of the above results attest that the synthesized GNDs are rich in hydroxyl and carboxyl functional groups.…”

Section: Basic Characterizationsmentioning

confidence: 96%

See 1 more Smart Citation

Bioinspired Strong and Tough Poly(ε-caprolactone)/Graphene Nanodot Composite Films via Weak Hydrogen Bonds: Implications for Thermal–Mechanical Properties

Fang,

Tong,

Qiu

2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Natural materials instruct that mechanical consumption interactions can address the conflict between strength and toughness and enable the preparation of high-performance artificial nanocomposites. Imitating the natural spider silk structure has led to numerous strong and tough biomimetic materials through hydrogen-bond (H-bond) cross-linking; however, the relevance of H-bond cross-linking to the microstructure and mechanical performances of the nanocomposites still remains unclear. Inspired by spider silk, here we fabricate strong and tough poly(ε-caprolactone) (PCL) nanocomposites with graphene nanodots (GNDs) as reinforcements. Under the weak H-bond crosslinking, the resultant GNDs/PCL nanocomposite films with 2.0 wt % fillers show a high strength of 33.9 MPa (by ca. 82%), in combination with a significant enhancement in the modulus (by ca. 46%), toughness (by 2.2-fold), and thermal stability. Our work reveals the controlling effect of weak H-bond cross-linking on the microstructure and macroscopic performances of GNDs/PCL nanocomposites and the relationship to mechanical properties and thermal stability for the first time. This concept provides many opportunities to construct superior polymer nanocomposites for applications in the tissue engineering fields.

show abstract

Section: Resultsmentioning

confidence: 85%

Section: Basic Characterizationsmentioning

confidence: 96%