Ultra-thin two-dimensional nanosheets for in-situ NIR light-triggered fluorescence enhancement

N-octylpyridine hydrogen sulphate ionic liquid for multifunctional fluorescent response in different solvents

“…In addition, the shape of the emission peak of the compound substantially changed in different solvents. The IL exhibits a double-fluorescence phenomenon, such as MOFs and other molecules [ 45 ].…”

Metal–organic framework nanosheets: from nano-scale to micron-scale with tunable color

“…42 When the UCNPs are in contact with other metal–organic materials, the up-conversion luminescence (UCL) of UCNPs, which is triggered by the NIR laser, can display strong synergetic effects with the MLCT of the corresponding metal–organic materials and made a significant influence on the luminescence properties. 34,36,37 We then loaded UCNPs to the surfaces of the present 2D nanosheets, to explore the variation of fluorescence intensity as a response to NIR light irradiation. All of these five 2D nanosheets were loaded with Yb 3+ -sensitized UCNPs [(NaYF4): 20 mol% Yb 3+ , 1 mol% Er 3+ ] that could convert 980 nm light into 500–700 nm green light (Fig.…”

“…In our group, the preparation of MONs with a single-layer limit, for functional adjustment and various applications, has been performed. [32][33][34][35][36][37][38] More recently, by quantitatively breaking the inter-layer halogen-bonding contacts through variations in ultrasonic duration and solvent polarity, for the same MONs, both the 2D nanosheets with lateral size larger than 500 nm and the one-dimensional (1D) nanoribbons with a lateral size smaller than 100 nm, can be obtained. 39 More importantly, the transformation from paramagnetic behavior to antiferromagnetic behavior, triggered by 3D-to-2D evolution, has been observed on MONs.…”

Quantum-sized topological insulators/semimetals enable ultrahigh and broadband saturable absorption

“…The PL intensity of the QS dispersions in varying solvents showed remarkable difference, which could be determined by QS-solvent (direct) interactions. 8,37,38 The PL lifetimes and quantum yields of the QSs were measured, as shown in Fig. 3(d) and Fig.…”