Protein‐Framed Multi‐Porphyrin Micelles for a Hybrid Natural–Artificial Light‐Harvesting Nanosystem

Abstract

A micelle-like hybrid natural-artificial light-harvesting nanosystem was prepared through protein-framed electrostatic self-assembly of phycocyanin and a four-armed porphyrin star polymer. The nanosystem has a special structure of pomegranate-like unimolecular micelle aggregate with one phycocyanin acceptor in the center and multiple porphyrin donors in the shell. It can inhibit donor self-quenching effectively and display efficient transfer of excitation energy (about 80.1 %) in water. Furthermore, the number of donors contributing to a single acceptor could reach as high as about 179 in this nanosystem.

A srikaya-like light-harvesting antenna based on graphene quantum dots and porphyrin unimolecular micelles

“…2d characterizations of THPDs can be referred to our recent report. [8] 14kD and a narrow polydispersity index ca. 1.19 degree of zeta potential of THPD solution was determined to be ( Fig.…”

“…The fluorescence excited at 410 nm (UV-Vis) Thus, it is feasible to use GQDs as excitation energy donor THPDs as acceptors to construct a new LHA system construct a LHA with only one THPD acceptor but multi donors, an Grzybowski Positively charged THPD 2.0×10 charged (4.0×10 be immediately surrounding GQD THPD would be interaction TEM structure of the obtained self molar feed ratio a light core GQDs are crystalline while THPD polymer characterizations of THPDs can be referred to our recent [8] The final star polymers have kD and a narrow polydispersity index ca. 1.19 degree of polymerization of PDMAEMA arms zeta potential of THPD solution was determined to be 6), which rendered THPDs soluble and stable in water.…”

“…THPDs have a critical micellar concentration (CMC) of 0.05 mg/mL. [8] When THPDs formed unim average around 1e), and with an average hydrodynamic diameter (D nm by the dynamic light small size difference comes from the f in a dried state in TEM measurement, while it is in a hydrated state in DLS measurement.…”

“…Firstly, it is fairly simple to prepare; Secondly, nanosystem has a biomimetic structure with multi donors nanosystem can work well transfer efficiency up to 93.6% and an antenna effect of 7.3 type of QDs, g good optical properties, but also have some smaller size, being cost than semic construct nano although GQDs have often been used to transfer or reserve electrons to acceptors or substrates, they are rarely used in LHAs through Förster resonance Herein, we report a novel aqueous LHA based on porphyrins to meet the abovementioned challenges. As shown in Scheme 1, a four core and four poly(2 PDMAEMA) arms was acceptor, [8] while water groups were used as the donors. The LHA was constructed by using the positively charged THPD as the core to electrostatic self surface.…”

Tuning the Förster Resonance Energy Transfer through a Self‐Assembly Approach for Efficient White‐Light Emission in an Aqueous Medium

“…The hydrophobic core of micelles provides an unique platform for the encapsulation of organic fluorophores or drug molecules, while the hydrophilic shell imparts the stability to the core and retain the dispersibility of micelles in an aqueous medium . Additionally, the spatial organization of donor–acceptor pairs can be achieved through noncovalent interactions in micelles leading to the construction of light‐harvesting materials . Tunable fluorescence including white‐light emission is possible to obtain by controlling the Förster resonance energy transfer (FRET) from donor to acceptor molecules in the confined environment of micelles …”