Guided Self-Assembly of Metal Atoms on Silicon Using Organic-Molecule Templating

2012 ◽  
Vol 134 (37) ◽  
pp. 15312-15317 ◽  
Author(s):  
Daniel R. Belcher ◽  
Marian W. Radny ◽  
Steven R. Schofield ◽  
Phillip V. Smith ◽  
Oliver Warschkow
Keyword(s):  
Self Assembly ◽  
Organic Molecule ◽  
Metal Atoms

scholarly journals Organic Nanoparticles Based on D-A-D Small Molecule: Self-Assembly, Photophysical Properties, and Synergistic Photodynamic/Photothermal Effects

Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 502
Author(s):  
Liangliang Yue ◽  
Haolan Li ◽  
Qi Sun ◽  
Xiaogang Luo ◽  
Fengshou Wu ◽  
...  
Keyword(s):  
Self Assembly ◽  
Organic Molecule ◽  
High Efficiency ◽  
Photophysical Properties ◽  
Coupling Reaction ◽  
Ros Generation ◽  
Dead Cell ◽  
Minimal Invasiveness ◽  
Sonogashira Coupling Reaction ◽  
Potential Strategy

Cancer is one of the major diseases threatening human health. Traditional cancer treatments have notable side-effects as they can damage the immune system. Recently, phototherapy, as a potential strategy for clinical cancer therapy, has received wide attention due to its minimal invasiveness and high efficiency. Herein, a small organic molecule (PTA) with a D-A-D structure was prepared via a Sonogashira coupling reaction between the electron-withdrawing dibromo-perylenediimide and electron-donating 4-ethynyl-N,N-diphenylaniline. The amphiphilic organic molecule was then transformed into nanoparticles (PTA-NPs) through the self-assembling method. Upon laser irradiation at 635 nm, PTA-NPs displayed a high photothermal conversion efficiency (PCE = 43%) together with efficient reactive oxygen species (ROS) generation. The fluorescence images also indicated the production of ROS in cancer cells with PTA-NPs. In addition, the biocompatibility and photocytotoxicity of PTA-NPs were evaluated by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and live/dead cell co-staining test. Therefore, the as-prepared organic nanomaterials were demonstrated as promising nanomaterials for cancer phototherapy in the clinic.

scholarly journals One-, Two-, and Three-Dimensional Self-Assembly of Atomically Precise Metal Nanoclusters

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1105 ◽  
Author(s):  
Ayano Ebina ◽  
Sakiat Hossain ◽  
Hikaru Horihata ◽  
Shuhei Ozaki ◽  
Shun Kato ◽  
...  
Keyword(s):  
Self Assembly ◽  
Fine Particle ◽  
Three Dimensional ◽  
Chemical Properties ◽  
Design Guidelines ◽  
Metal Nanoclusters ◽  
Functional Nanomaterials ◽  
Physical Chemical ◽  
Metal Atoms ◽  
Fine Particle Size

Metal nanoclusters (NCs), which consist of several, to about one hundred, metal atoms, have attracted much attention as functional nanomaterials for use in nanotechnology. Because of their fine particle size, metal NCs exhibit physical/chemical properties and functions different from those of the corresponding bulk metal. In recent years, many techniques to precisely synthesize metal NCs have been developed. However, to apply these metal NCs in devices and as next-generation materials, it is necessary to assemble metal NCs to a size that is easy to handle. Recently, multiple techniques have been developed to form one-, two-, and three-dimensional connected structures (CSs) of metal NCs through self-assembly. Further progress of these techniques will promote the development of nanomaterials that take advantage of the characteristics of metal NCs. This review summarizes previous research on the CSs of metal NCs. We hope that this review will allow readers to obtain a general understanding of the formation and functions of CSs and that the obtained knowledge will help to establish clear design guidelines for fabricating new CSs with desired functions in the future.

Energetics and kinetics of Cu atoms and clusters on the Si(111)-7 × 7 surface: first-principles calculations

2016 ◽  
Vol 18 (27) ◽  
pp. 18549-18554 ◽  
Author(s):  
Xiao-Yan Ren ◽  
Chun-Yao Niu ◽  
Wei-Guang Chen ◽  
Ming-Sheng Tang ◽  
Jun-Hyung Cho
Keyword(s):  
Thin Film ◽  
Crystal Growth ◽  
First Principles ◽  
Self Assembly ◽  
Catalytic Reactions ◽  
Semiconductor Surface ◽  
First Principles Calculations ◽  
Metal Atoms ◽  
Thin Film Epitaxy ◽  
Kinetics Of

Exploring the properties of noble metal atoms and nano- or subnano-clusters on the semiconductor surface is of great importance in many surface catalytic reactions, self-assembly processes, crystal growth, and thin film epitaxy.

Directed self-assembly of peptide–diketopyrrolopyrrole conjugates – a platform for bio-organic thin film preparation

Soft Matter ◽  
2020 ◽  
Vol 16 (28) ◽  
pp. 6563-6571
Author(s):  
Aakanksha Rani ◽  
Iman Kavianinia ◽  
Paul Hume ◽  
Luis M. De Leon-Rodriguez ◽  
Shinji Kihara ◽  
...  
Keyword(s):  
Thin Film ◽  
Long Range ◽  
Self Assembly ◽  
Organic Molecule ◽  
Water Solubility ◽  
Organic Thin Film ◽  
Thin Film Preparation ◽  
Film Preparation

Increased water solubility and long-range intermolecular ordering have been introduced into the fluorescent organic molecule thiophene-diketopyrrolopyrrole via its conjugation to the octapeptide HEFISTAH, derived from a protein–protein β-interface.

An unsymmetrical non-fullerene acceptor: synthesis via direct heteroarylation, self-assembly, and utility as a low energy absorber in organic photovoltaic cells

2017 ◽  
Vol 53 (73) ◽  
pp. 10168-10171 ◽  
Author(s):  
Abby-Jo Payne ◽  
Shi Li ◽  
Sergey V. Dayneko ◽  
Chad Risko ◽  
Gregory C. Welch
Keyword(s):  
Self Assembly ◽  
Organic Molecule ◽  
Photovoltaic Cells ◽  
Low Energy ◽  
Perylene Diimide ◽  
Organic Photovoltaic ◽  
Organic Photovoltaic Cells ◽  
Energy Absorber ◽  
Design And Synthesis

This study reports on the design and synthesis of an unsymmetrical π-conjugated organic molecule composed of perylene diimide, thienyl diketopyrrolopyrrole, and indoloquinoxaline pieced together using direct heteroarylation.

Self-assembly of metal atoms (Na, K, Ca) on graphene

Nanoscale ◽  
2015 ◽  
Vol 7 (6) ◽  
pp. 2352-2359 ◽  
Author(s):  
Jian Zhou ◽  
Shunhong Zhang ◽  
Qian Wang ◽  
Yoshiyuki Kawazoe ◽  
Puru Jena
Keyword(s):  
Self Assembly ◽  
Metal Atoms

Fluorescent nanoparticles from self-assembly of β-cyclodextrin-functionalized fluorene copolymers for organic molecule sensing and cell labeling

2012 ◽  
Vol 3 (9) ◽  
pp. 2444 ◽  
Author(s):  
Li Qun Xu ◽  
Bin Zhang ◽  
Rong Wang ◽  
Yu Chen ◽  
Koon-Gee Neoh ◽  
...  
Keyword(s):  
Self Assembly ◽  
Organic Molecule ◽  
Cell Labeling ◽  
Fluorescent Nanoparticles

Pre-nucleation dynamics of organic molecule self-assembly investigated by PEEM

2011 ◽  
Vol 13 (10) ◽  
pp. 4693 ◽  
Author(s):  
Alexander J. Fleming ◽  
Stephen Berkebile ◽  
Thomas Ules ◽  
Michael G. Ramsey
Keyword(s):  
Self Assembly ◽  
Organic Molecule

A novel three-dimensional framework constructed by 2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole and infinite chains of hydrogen-bonded water molecules

2009 ◽  
Vol 65 (3) ◽  
pp. o85-o87 ◽  
Author(s):  
De-Qiang Qi ◽  
Gui-Ge Hou ◽  
Jian-Ping Ma ◽  
Ru-Qi Huang ◽  
Yu-Bin Dong
Keyword(s):  
Self Assembly ◽  
Organic Molecule ◽  
Three Dimensional ◽  
Water Molecules ◽  
Biological Processes ◽  
Stability Function ◽  
Hydrogen Bond Acceptor ◽  
One Dimensional ◽  
Conformation Stability ◽  
Hydrogen Bonded

A novel three-dimensional framework of 2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole dihydrate, C11H10N4·2H2O orL·2H2O, (I), in whichLacts as both hydrogen-bond acceptor and donor in the supramolecular construction with water, has been obtained by self-assembly reaction ofLwith H2O. The two independent water molecules are hydrogen bonded alternately with each other to form a one-dimensional infinite zigzag water chain. These water chains are linked by the benzimidazole molecules into a three-dimensional framework, in which each organic molecule is hydrogen bonded by three water molecules. This study shows that the diversity of hydrogen-bonded patterns plays a crucial role in the formation of the three-dimensional framework. More significantly, as water molecules are important in contributing to the conformation, stability, function and dynamics of biomacromolecules, the infinite chains of hydrogen-bonded water molecules seen in (I) may be a useful model for water in other chemical and biological processes.

scholarly journals A supramolecular self-assembly host–guest system from cyclodextrin as an absolute water-soluble fluorescence sensor for aluminium ions: synthesis, characterization and sensing activity

RSC Advances ◽  
2017 ◽  
Vol 7 (61) ◽  
pp. 38160-38165 ◽  
Author(s):  
Zengchen Liu ◽  
Kai Ren ◽  
Yahong Chen ◽  
Yanxia Li ◽  
Jianping Xie ◽  
...  
Keyword(s):  
Schiff Base ◽  
Self Assembly ◽  
Organic Molecule ◽  
Fluorescence Sensor ◽  
Water Soluble ◽  
Guest System

In the study, an organic molecule derived from paeonol and anthraniloyl hydrazine (L) was synthesized via a Schiff-base reaction.

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