An Artificial Light‐Harvesting System with Tunable Fluorescence Color in Aqueous Sodium Dodecyl Sulfonate Micellar Systems for Photochemical Catalysis

Abstract

Main observation and conclusion In the present work, an artificial light‐harvesting system with fluorescence resonance energy transfer (FRET) is successfully fabricated in aqueous sodium dodecyl sulfonate (SDS) micellar systems. Since the tight and orderly arrangement of dodecyl in the SDS micelles is hydrophobic, tetra‐(4‐pyridylphenyl)ethylene (4PyTPE) can be easily encapsulated into the hydrophobic layer of SDS micelles through noncovalent interaction, which exhibits aggregation‐induced emission (AIE) phenomenon and can be used as energy donor. By using amphoteric sulforhodamine 101 (SR101) fluorescent dye attached to the negatively charged surface of SDS micelles through electrostatic interaction as energy acceptor, the light‐harvesting FRET process can be efficiently simulated. Through the steady‐state emission spectra analysis in the micelle‐mediated energy transfer from 4PyTPE to SR101, the fluorescence emission can be tuned and white light emission with CIE coordinates of (0.31, 0.29) can be successfully achieved by tuning the donor/acceptor ratio. More importantly, to better mimic natural photosynthesis, the SDS micelles with 4PyTPE and SR101 FRET system showed enhanced catalytic activity in photochemical catalysis for dehalogenation of α‐bromoacetophenone in aqueous solution and the photocatalytic reaction could be extended to gram levels.

An artificial light-harvesting system based on the ESIPT–AIE–FRET triple fluorescence mechanism

“…Finally, a Förster resonance energy transfer (FRET) process could occurred by incorporating a matching energy acceptor to the NPs. [34][35][36][37][38] By mimicking nature and maintaining a reasonably high donor/acceptor (D/A) ratio, an efficient LHS based on the triple mechanism of AIE-ESIPT-FRET can be obtained.…”

A novel polyelectrolyte-based artificial light-harvesting system for photocatalysis of cross-dehydrogenation coupling

“…Inspired by the process of photosynthesis, researchers have constructed various types of articial light-harvesting systems (LHSs) that transfer energy based on the Förster resonance energy transfer process (FRET). Aer years of painstaking research, various articial LHSs based on supramolecular polymers, [1][2][3][4][5] host-guest interactions, [6][7][8][9][10][11][12][13][14][15][16][17] gels, [18][19][20][21] vesicles, and micelles [22][23][24][25][26] have been reported. However, these articial light-harvesting systems are constructed using methods that have to go through many complex steps.…”

Water-Soluble Metallo-Supramolecular Nanoreactors for Mediating Visible-Light-Promoted Cross-Dehydrogenative Coupling Reactions

“…Given the amphiphilic nature of metallocage C5 , some micelle-like aggregates may also form in water and provide hydrophobic nanoenvironments to mediate these CDC reactions. , To this end, dynamic light scattering (DLS) spectra of ligand L2 and cage C5 were recorded in water at concentrations of 80.0 and 10.0 μM, respectively. The results indicate that L2 and C5 could both produce nanosized aggregates with average hydrodynamic diameters ( D h ) of 13.5 and 73.0 nm, respectively (Figure S58).…”