scholarly journals Sequence-complementarity dependent co-assembly of phosphodiester-linked aromatic donor-acceptor trimers

2021 ◽  
Author(s):  
Nadeema Appukutti ◽  
Alex de Vries ◽  
Prashant Gudeangadi ◽  
Bini Claringbold ◽  
Michelle Garrett ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Nucleic Acids ◽  
Supramolecular Chemistry ◽  
Self Assembly ◽  
Functional Nanomaterials ◽  
Monomer Sequence ◽  
Complementary Sequences ◽  
Sequence Complementarity ◽  
Aromatic Donor ◽  
Donor Acceptor

Development of the interplay between monomer sequence and supramolecular chemistry is critical if chemistry is to recapitulate the properties of proteins and nucleic acids in the synthetic world. We have created sequenced trimers of aromatic donor/acceptor units which participate in charge-transfer interactions, linked by phosphodiesters. Each sequence displays its own characteristic self-assembly, and moreover complementary sequences interact with each other to produce new nanostructures and emergent thermochromism. This finding paves the way towards new functional nanomaterials which make bio-analogous use of sequence to tune structure.

Light harvesting vesicular donor–acceptor scaffold limits the rate of charge recombination in the presence of an electron donor

2014 ◽  
Vol 7 (5) ◽  
pp. 1661-1669 ◽  
Author(s):  
Rijo T. Cheriya ◽  
Ajith R. Mallia ◽  
Mahesh Hariharan
Keyword(s):  
Charge Transfer ◽  
Survival Time ◽  
Electron Donor ◽  
Self Assembly ◽  
Light Harvesting ◽  
Charge Recombination ◽  
Donor Acceptor

This work highlights the utility of π–π stacked self-assembly for enhanced survival time of charge transfer intermediates upon photoexcitation of donor–acceptor systems.

scholarly journals Nanopore-induced host–guest charge transfer phenomena in a metal–organic framework

2018 ◽  
Vol 9 (13) ◽  
pp. 3282-3289 ◽  
Author(s):  
S. Yamamoto ◽  
J. Pirillo ◽  
Y. Hijikata ◽  
Z. Zhang ◽  
K. Awaga
Keyword(s):  
Charge Transfer ◽  
Self Assembly ◽  
Metal Organic Framework ◽  
Donor And Acceptor ◽  
Organic Electron ◽  
Donor Acceptor ◽  
Metal Organic ◽  
Bulk Scale ◽  
A Charge ◽  
Organic Framework

Using the “crystal sponge” approach, weak organic electron donor molecules were impregnated and evenly distributed in a crystal of a metal–organic framework (MOF), with the self-assembly of the donor–acceptor pairs with electron acceptor ligands. The nanopores of the MOF confined them and induced a charge transfer phenomenon, which would not occur between donor and acceptor molecules in a bulk scale.

scholarly journals Highly Sensitive Biosensors Based on Biomolecules and Functional Nanomaterials Depending on the Types of Nanomaterials: A Perspective Review

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 299 ◽  
Author(s):  
Jinho Yoon ◽  
Minkyu Shin ◽  
Taek Lee ◽  
Jeong-Woo Choi
Keyword(s):  
Nucleic Acids ◽  
Signal To Noise Ratio ◽  
High Sensitivity ◽  
Transition Metal Dichalcogenide ◽  
The Novel ◽  
Functional Nanomaterials ◽  
Complementary Sequences ◽  
Highly Sensitive ◽  
Target Molecules

Biosensors are very important for detecting target molecules with high accuracy, selectivity, and signal-to-noise ratio. Biosensors developed using biomolecules such as enzymes or nucleic acids which were used as the probes for detecting the target molecules were studied widely due to their advantages. For example, enzymes can react with certain molecules rapidly and selectively, and nucleic acids can bind to their complementary sequences delicately in nanoscale. In addition, biomolecules can be immobilized and conjugated with other materials by surface modification through the recombination or introduction of chemical linkers. However, these biosensors have some essential limitations because of instability and low signal strength derived from the detector biomolecules. Functional nanomaterials offer a solution to overcome these limitations of biomolecules by hybridization with or replacing the biomolecules. Functional nanomaterials can give advantages for developing biosensors including the increment of electrochemical signals, retention of activity of biomolecules for a long-term period, and extension of investigating tools by using its unique plasmonic and optical properties. Up to now, various nanomaterials were synthesized and reported, from widely used gold nanoparticles to novel nanomaterials that are either carbon-based or transition-metal dichalcogenide (TMD)-based. These nanomaterials were utilized either by themselves or by hybridization with other nanomaterials to develop highly sensitive biosensors. In this review, highly sensitive biosensors developed from excellent novel nanomaterials are discussed through a selective overview of recently reported researches. We also suggest creative breakthroughs for the development of next-generation biosensors using the novel nanomaterials for detecting harmful target molecules with high sensitivity.

Donor–acceptor interaction-driven self-assembly of amphiphilic rod–coil molecules into supramolecular nanoassemblies

Nanoscale ◽  
2017 ◽  
Vol 9 (45) ◽  
pp. 17975-17982 ◽  
Author(s):  
Shengsheng Yu ◽  
Yuntian Yang ◽  
Tie Chen ◽  
Jingzhe Xu ◽  
Long Yi Jin
Keyword(s):  
Charge Transfer ◽  
Self Assembly ◽  
Acceptor Interaction ◽  
Donor Acceptor ◽  
Spherical Micelles

Pyrene-based amphiphiles self-assemble into nanofibers, spherical micelles and multilayer nanotubes. The addition of TNF allowed polymerization of these objects through charge-transfer interactions to form various supramolecular nanoassemblies.

scholarly journals Charge Transfer in Self-Assembled Fullerene-Tetraphenylporphyrin Non-Covalent Multilayer

2022 ◽  
Author(s):  
Karla Arlen Ortiz ◽  
Oscar A. Jaramillo-Quintero ◽  
Edgar Alvarez-Zauco ◽  
Marina Elizabeth Rincón González
Keyword(s):  
Charge Transfer ◽  
Self Assembly ◽  
Charge Separation ◽  
Physical Vapor Deposition ◽  
Multilayer Film ◽  
Soret Band ◽  
Binding Modes ◽  
Trap States ◽  
Multilayer Systems ◽  
Donor Acceptor

Abstract Self-assembly of organic molecules is a promising method for generating multilayer systems for fabrication of functional devices. In particular, fullerene (C60) and porphyrin molecules offer a variety of binding modes, including π-π interactions, dipole electrostatic attraction, and hydrogen bonding, to tailor the charge separation and charge recombination limiting device performance. Here, we investigate multilayer systems obtained by the sequential physical vapor deposition of C60 and tetraphenylporphyrin (H2TPP) layers, focusing on the effect of the interfaces on the charge transfer processes. Absorbance spectra indicate noncovalent-like π-stacking, with the increment of fullerene interfaces shifting the porphyrin Soret band toward the blue. Similarly, surface photovoltage measurements in the multilayer systems show that as the number of interfaces increases, so does the photogeneration of charge. Charge separation follows carrier generation given that the recombination time, associated to trap states, decreases. This behavior indicates that the Donor-Acceptor nature of the fullerene-porphyrin bilayer system is conserved, and even enhanced, in the multilayer film, and that the number of interfaces aid to the formation of selective paths for charge carrier collection, demonstrating its potential in optoelectronic devices.

Charge-Transfer Nanostructures through Noncovalent Amphiphilic Self-Assembly: Extended Cofacial Donor-Acceptor Arrays

2013 ◽  
Vol 3 (2) ◽  
pp. 161-169 ◽  
Author(s):  
K. Venkata Rao ◽  
Krishnendu Jalani ◽  
K. Jayaramulu ◽  
Umesha Mogera ◽  
Tapas Kumar Maji ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Self Assembly ◽  
Donor Acceptor
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