Carbon nanodots with strong nonlinear optical response

Facile synthesis of two-dimensional WS2 with reverse saturable absorption and nonlinear refraction properties in the PMMA matrix

“…Hence, FOM is calculated to be ~0.40 × 10 -13 esu cm. It is noticed that FOM of the WS 2 /PMMA composite is larger than that of other NLO materials by one order of magnitude including exfoliated TMDs, reduced graphene oxide, graphene oxides, graphene, carbon nanodots and Au nanorods [7,17,34]. indicate that the WS 2 /PMMA composite has great potential as a type of excellent OL material used in nanophotonic devices including optical limiter and the solid-state reaction is a feasible method for the fabrication of OL nanomaterials.…”

Controllable Photoluminescent and Nonlinear Optical Properties of Polymerizable Carbon Dots and Their Arbitrary Copolymerized Gel Glasses

“…Two‐photon absorption (TPA) behaviors of CDs and SiCDs are assigned to a positive nonlinear absorption coefficient β . In the meantime, the negative nonlinear refractive index parameter n 2 is attributed to self‐defocusing behaviors of samples …”

“…Recently, carbon dots (CDs) have gathered substantial interest due to their excellent properties, for example, tunable photoluminescence (PL), high stability, and easy surface functionalization . Hence, CDs have become a potential alternative of conventional fluorescent materials for applications in bioimaging, LEDs, energy conversion/storage, lasers, and optical limiters . Furthermore, researchers have prepared multicolor emissive CDs with high quantum yields (QYs) .…”

Preparation of highly photoluminescent sulfur-doped carbon dots for Fe(iii) detection

“…[32][33][34] The C 1s spectrum can be resolved as follows: C-C and C=C at 285.0 eV, C-S at 285.6 eV, C-O at 286.3 eV, and C=O at 289.0 eV (Figure 3(b)). 20, [35][36][37][38][39] As shown in Figure 3 We successfully synthesized S-doped C-dots with excellent 10 properties using hydrothermal method involving sodium citrate solution and sodium thiosulfate as precursor. It is found that the as-prepared S-doped C-dots are sensitive toward Fe 3+ , which is indispensable for metabolic processes of all living systems.…”