Highly efficient and switchable electron-transfer system realised by peptide-assisted J-type assembly of porphyrin.
نویسندگان
چکیده
We propose a new strategy for fabrication of a phase-separated bicontinuous system composed of low-molecular donor and acceptor that is built up through coordination-based orientation of pyridylated fullerene on a π-conjugated zinc-porphyrin J-type assembly. This complex system exhibits extremely efficient and switchable fluorescence quenching.
منابع مشابه
Fabrication and Properties of Porphyrin Nano- and Micro-particles with Novel Morphology
New types of porphyrin nano- and micro-particles composed of J- and H-heteroaggregates were prepared by electrostatic self-assembly of two oppositely charged porphyrins, tetrakis(4-trimethylammoniophenyl)porphyrin (H2TAPP4+) and tetrakis(4-sulfonatophenyl)porphyrin cobalt(II) (CoTPPS4-), in aqueous solutions. Transmission electron microscopy (TEM) images showed novel morphology and size distrib...
متن کاملSelf-Sorting of cyclic peptide homodimers into a heterodimeric assembly featuring an efficient photoinduced intramolecular electron-transfer process.
We describe the thermodynamic characterisation of the self-sorting process experienced by two homodimers assembled by hydrogen-bonding interactions through their cyclopeptide scaffolds and decorated with Zn-porphyrin and fullerene units into a heterodimeric assembly that contains one electron-donor (Zn–porphyrin) and one electron-acceptor group (fullerene). The fluorescence of the Zn-porphyrin ...
متن کاملThrough-bond photoinduced electron transfer in a porphyrin-fullerene conjugate held by a Hamilton type hydrogen bonding motif.
Control over the occurrence of through-bond electron transfer in self-assembled donor-acceptor conjugates is often difficult, since through-space electron transfer also competes due to the flexible nature of the spacer used to link the entities. In the present study, we have constructed a self-assembled donor-acceptor conjugate held solely by complementary hydrogen bonding and established throu...
متن کاملHighly fluorescent peptide nanoribbon impregnated with Sn-porphyrin as a potent DNA sensor.
Highly fluorescent and thermo-stable peptide nanoribbons (PNRs) were fabricated by solvothermal self-assembly of a single peptide (D,D-diphenyl alanine peptides) with Sn-porphyrin (trans-dihydroxo[5,10,15,20-tetrakis(p-tolyl)porphyrinato] Sn(IV) (SnTTP(OH)2)). The structural characterization of the as-prepared nanoribbons was performed by transmitting electron microscopy (TEM), scanning electro...
متن کاملPorphyrin dimers bridged by an electrochemically switchable unit.
In the past decade much effort has been devoted to the synthesis and studies of molecular systems comprising porphyrin units bridged by well-defined p-conjugated spacers at the mesoor b-positions. These conjugated oligoporphyrin systems are expected to have potential applications in molecular wires and electronic devices due to their unique optical, physical, and chemical properties. Photophysi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Chemical communications
دوره 46 38 شماره
صفحات -
تاریخ انتشار 2010