Construction of Enhanced Photostability Anthraquinone-Type Nanovesicles Based on a Novel Two-Step Supramolecular Assembly Strategy and Their Application on Multiband Laser-Responsive Composites

Abstract

The photostability and dispersity under aggregation states always become an obstacle for the development of smallmolecular organic dye (SMOD) composites. Herein, a novel supramolecular assembly strategy with a two-step assembly method is implemented to encapsulate SMODs for improving their photostability and acquiring uniformly dispersed nanoaggregates in aqueous solution. By the novel assembly strategy, photodegradation rates of the anthraquinone-type dyes can decrease significantly, and the stability of dispersed nanoassembly bodies can be improved in solution. Based on the two-step supramolecular assembly strategy, a new kind of aqueous processing composite system can be developed for preparing multiband laser-responsive devices and in situ healing of optical composite films. This two-step supramolecular assembly strategy can provide a new template and reference for improving the defects of SMODs and fabricating high-performance optical devices.

Turn-on fluorogenic sensors based on an anthraquinone signaling unit for the detection of Zn(ii) and Cd(ii) ions

“…9 †). Similarly, commercially available 2,6-diaminoanthraquinone (10) was subjected to the same N-acylation reaction, resulting in 93% yield of a pale-yellow solid 11. The 1 H NMR spectrum of 11 exhibited an -NH signal of amide groups at δ 10.93 ppm along with four alpha-methylene protons at δ 4.35 ppm (ESI Fig.…”

“…The crude product was recrystallized from cold acetone, yielding chemosensor 1 as an orange-yellow solid (2.8069 g, 72% (11). A solution of 2,6-diaminoanthraquinone (10) (5.0022 g, 21.0548 mmol) in anhydrous N,N′-dimethylformamide (DMF, 170 mL) was cooled in an ice bath. Then, 2-chloroacetyl chloride (5) (6.8046 g, 4.79 mL, 60.2497 mmol) was added dropwise via an addition funnel into the solution.…”

“…7 However, monitoring these metal ions in the environment is still difficult and challenging due to their low concentrations, known as trace levels. The most challenging aspect in determining these group 12 metal ions is that all of them possess d 10 electron configurations, which cause their spectroscopic silence and relative inertness toward redox reactions. For these reasons, monitoring and quantification of group 12 metal ions are not convenient as those of other transition metal ions.…”

“…1a,8 These advantages depend primarily on the components of the chemosensor, composed of three essential moieties: a signaling unit, receptor unit(s), and a spacer or linker. 9 An anthraquinone core is commonly employed as a signaling unit due to its photostability 10 and structural flexibility for chemical modifications. 11 Consequently, metal ion probes based on anthraquinone derivatives with varying substituent positions have been extensively examined over the past several decades.…”

Conductive Materials with Elaborate Micro/Nanostructures for Bioelectronics

“…[126,127] For the fabrication of micro/nanoscale or even molecular-scale materials, solution-based supramolecular self-assembly has been proposed. [128,129] Inspired by the typical self-assembly example (the formation of the lipid bilayer of cell membranes), Feng's group firstly demonstrated 2D mesoporous polypyrrole (mPPy) nanosheets with controllable pore sizes (Figure 7a,b). [130] The process involved the synergic self-assembly of amphiphilic aliphatic amine and polystyrene-poly(ethylene oxide) block copolymers.…”