Recyclable fluorescent paper sensor for visual detection of nitroaromatic explosives

Octa[4‐(9‐carbazolyl)phenyl]silsesquioxane‐Based Porous Material for Dyes Adsorption and Sensing of Nitroaromatic Compounds

“…These results provide a basis to conclude that HPP is selective for the nitro‐phenolic compounds with highest efficiency being seen for 2,4‐dinitrophenol. The K sv of DNP and NP for HPP is much higher than the corresponding value of silsesquioxane‐based fluorescent porous polymer of HPP‐2 (638 and 2100), which was prepared by Heck coupling reaction of octavinylsilsesquioxane with tri(4‐bromophenyl)ethane . This result should be ascribed to the different surface chemistry of these two porous polymers.…”

“…Compared to OCPS, HPP possesses lower fluorescence life or efficiency. This should be ascribed to the forming inhomogeneous network with different local crosslinked degree in the coupling reaction, which leads to a range of different lengths of conjugated units in the network . Moreover, some impurity might be introduced into the porous materials; for example, FeCl 3 is wrapped in the close pore.…”

A Selenone-Functionalized Polyhedral Oligomeric Silsesquioxane for Selective Detection and Adsorption of Hg2+ ions in Aqueous Solutions

“…Fourier transform infrared (FT-IR) spectra were measured via KBr pellet technique within a 4000 to 400 cm −1 region on a Bruker TENSOR-27 infrared spectrophotometer (Ettlingen, Germany). 1 H NMR, 13 C NMR, and 29 Si NMR spectra were measured on a Bruker AVANCE-400 NMR spectrometer (Rheinstetten, Germany) using CDCl 3 or d 6 -DMSO as the solvent and without tetramethylsilane (TMS) as an internal reference. Elemental analyses were conducted using an Elementar vario EL III elemental analyzer (Munich, Germany).…”

“…Compared to conventional organic molecules and polymers, POSS and their derivatives (typically T 8 , R 8 Si 8 O 12 ) possess many unique characteristics, such as rigid, high symmetric, well-defined, and ideal inorganic-organic hybrid structures, nanoscopic size (1-3 nm) and high functionality, etc, and thus having intriguing advantages, such as high thermal stability, mechanical properties (e.g., strength, modulus, rigidity), and improved quantum yields [1][2][3][4][5][6][7][8]. By virtue of these merits, they have been widely applied in many fields, including drug delivery [9], wastewater treatment [10,11], chemical sensors [12][13][14][15][16], energy transfer [17], bioimaging [18], chromatography [19], Polymers 2019, 11,2084 2 of 16 polymer electrolytes [20], catalysis [21][22][23], and membranes [24], etc. To realize these applications, it is crucial to incorporate various functionality into the POSS derivatives and/or materials.…”

In Situ Methylation Transforms Aggregation‐Caused Quenching into Aggregation‐Induced Emission: Functional Porous Silsesquioxane‐Based Composites with Enhanced Near‐Infrared Emission

“…Very recently, several fluorescent hybrid porous materials based on OVS and conventional fluorophores have been reported . Unfortunately, these materials suffer from short emission wavelengths, small Stokes shifts and poor emission intensities . Thus, there is motivation to develop superior emissive systems especially using OVS as it provides the opportunity to place fluorophores in spherical arrays around the cage and introduce porosity.…”