Templating Organic Semiconductors via Self-Assembly of Polymer Colloids

Science ◽  
2003 ◽  
Vol 299 (5614) ◽  
pp. 1872-1874 ◽  
Author(s):  
R. Mezzenga
Keyword(s):  
Organic Semiconductors ◽  
Self Assembly ◽  
Polymer Colloids

scholarly journals STM study on the self-assembly of oligothiophene-based organic semiconductors

2011 ◽  
Vol 2 ◽  
pp. 802-808 ◽  
Author(s):  
Elena Mena-Osteritz ◽  
Marta Urdanpilleta ◽  
Erwaa El-Hosseiny ◽  
Berndt Koslowski ◽  
Paul Ziemann ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Self Assembly ◽  
Theoretical Calculations ◽  
The Self ◽  
Scanning Tunneling ◽  
Ambient Conditions ◽  
Tunneling Microscopy ◽  
Substitution Pattern ◽  
Electronic Density ◽  
The Individual

The self-assembly properties of a series of functionalized regioregular oligo(3-alkylthiophenes) were investigated by using scanning tunneling microscopy (STM) at the liquid–solid interface under ambient conditions. The characteristics of the 2-D crystals formed on the (0001) plane of highly ordered pyrolitic graphite (HOPG) strongly depend on the length of the π-conjugated oligomer backbone, on the functional groups attached to it, and on the alkyl substitution pattern on the individual thiophene units. Theoretical calculations were performed to analyze the geometry and electronic density of the molecular orbitals as well as to analyze the intermolecular interactions, in order to obtain models of the 2-D molecular ordering on the substrate.

Soft template assisted self-assembly: a general strategy toward two-dimensional molecular crystals for high-performance organic field-effect transistors

2022 ◽  
Author(s):  
Xinzi Tian ◽  
Jiarong Yao ◽  
Siyu Guo ◽  
Zhaofeng Wang ◽  
Yanling Xiao ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Self Assembly ◽  
High Performance ◽  
Field Effect Transistors ◽  
Molecular Crystals ◽  
Soft Template ◽  
General Strategy ◽  
Two Dimensional ◽  
Organic Field Effect Transistors ◽  
Intrinsic Properties

Two-dimensional molecular crystals (2DMCs) are highly desirable to probe the intrinsic properties in organic semiconductors and are promising candidates for constructing high-performance optoelectronic devices. Liquids such as water are favorable...

Facile synthesis and self-assembly of diazafluorenone-based p–n (donor–acceptor) organic semiconductors

Tetrahedron ◽  
2012 ◽  
Vol 68 (39) ◽  
pp. 8216-8221 ◽  
Author(s):  
Wei-Jie Li ◽  
Hai-Mei Wu ◽  
Yi-Bao Li ◽  
Chao-Peng Hu ◽  
Ming-Dong Yi ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Self Assembly ◽  
Facile Synthesis ◽  
Donor Acceptor

Control of the Mesoscopic Organization of Conjugated Thiophene Oligomers, Induced by Self-Assembly Properties

1993 ◽  
Vol 328 ◽  
Author(s):  
Francis Garnier ◽  
A. Yassar ◽  
R. Hajlaoui ◽  
G. Horowitz ◽  
F. Deloffre
Keyword(s):  
Structural Properties ◽  
Organic Semiconductors ◽  
Self Assembly ◽  
Field Effect Transistors ◽  
Charge Carrier Mobility ◽  
Molecular Engineering ◽  
Molecular Organization ◽  
Conjugated Oligomers ◽  
Planar Molecules ◽  
Mesoscopic Level

ABSTRACTConjugated oligomers form a fascinating class of molecular semiconductors, which open the perspective of control of electronic and structural properties through the variation of their chemical structure. For analysing the correlation between charge transport and structural properties, sexithiophene, 6T, was substituted by hexyl groups, both on the terminal α positions (α,ωDH6T) and as pendant groups in β position (β,β′DH6T). Structural characterizations by X-ray diffraction show that vacuum evaporated thin films of 6T and α,ωDH6T consist of layered structure in a monoclinic arrangement, with all-planar Molecules standing on the substrate, and that a much longer range ordering is observed when passing from 6T to α,ωDH6T, evidencing a large increase of molecular organization at the mesoscopic level. Electrical characterizations also indicate a significant enhancement of anisotropy of conductivity, with a ratio of 120 in favor of the conductivity along the stacking axis for α,ωDH6T. The charge carrier mobility, measured on field-effect transistors fabricated from these conjugated oligomers, also shows a large increase by a factor of 25 when passing from 6T to α,ωDH6T, and reaches a value close to 10-1cm2V-1s-1. In contrast, ββ′DH6T presents very low conductivity and mobility. These observations are attributed to the self-assembly properties brought by alkyl groups in α,ω position, and confirm the large potential of molecular engineering of organic semiconductors.

scholarly journals Hydrogen-Bonded Conjugated Materials and Their Application in Organic Field-Effect Transistors

2021 ◽  
Vol 9 ◽  
Author(s):  
Xin Shi ◽  
Weiwei Bao
Keyword(s):  
Organic Semiconductors ◽  
Self Assembly ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Organic Field Effect Transistors ◽  
Conjugated Materials ◽  
Chemical Structures ◽  
Simple Strategy ◽  
Stacking Order ◽  
Hydrogen Bonded

Recent research on organic semiconductors has revealed that the composition of the constituent organic material, as well as the subtle changes in its structure (the stacking order of molecules), can noticeably affect its bulk properties. One of the reasons for this is that the charge transport in conjugated materials is strongly affected by their structure. Further, the charge mobility increases significantly when the conjugated materials exhibit self-assembly, resulting in the formation of ordered structures. However, well-organized nanostructures are difficult to obtain using classical solution processing methods, owing to their disordered state. A simple strategy for obtaining well-ordered material films involves synthesizing new conjugated materials that can self-organize. Introducing hydrogen bonding in the materials to yield hydrogen-bonded material superstructures can be a suitable method to fulfill these critical requirements. The formed hydrogen bonds will facilitate the assembly of the molecules into a highly ordered structure and bridge the distance between the adjacent molecules, thus enhancing the intermolecular charge transfer. In this minireview, hydrogen-bonded small molecules and polymers as well as the relationship between their chemical structures and performances in organic field-effect transistors are discussed.

Hyperbranched crystalline nanostructure produced from ionic π-conjugated molecules

2015 ◽  
Vol 51 (13) ◽  
pp. 2663-2666 ◽  
Author(s):  
Jeremy R. Eskelsen ◽  
Kara J. Phillips ◽  
K. W. Hipps ◽  
Ursula Mazur
Keyword(s):  
Organic Semiconductors ◽  
Self Assembly ◽  
Ostwald Ripening ◽  
Oriented Attachment ◽  
Growth Mechanisms ◽  
Conjugated Molecules

We report the first synthesis of a hyperbranched sheaf-like nanostructure by ionic self-assembly of organic semiconductors that forms via combined oriented attachment and Ostwald ripening growth mechanisms.

Self-Assembly of Doublets from Flattened Polymer Colloids

Langmuir ◽  
2012 ◽  
Vol 28 (9) ◽  
pp. 4086-4094 ◽  
Author(s):  
Laura Mely Ramírez ◽  
Adrian S. Smith ◽  
Deniz B. Unal ◽  
Ralph H. Colby ◽  
Darrell Velegol
Keyword(s):  
Self Assembly ◽  
Polymer Colloids

scholarly journals 3D Nanostructures for Tissue Engineering, Cancer Therapy, and Gene Delivery

2020 ◽  
Vol 2020 ◽  
pp. 1-24 ◽  
Author(s):  
Ahmad Gholami ◽  
Seyyed Alireza Hashemi ◽  
Khadije Yousefi ◽  
Seyyed Mojtaba Mousavi ◽  
Wei-Hung Chiang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Tissue Engineering ◽  
Cancer Therapy ◽  
Gene Delivery ◽  
Organic Semiconductors ◽  
Self Assembly ◽  
Critical Role ◽  
Three Dimensional ◽  
3D Cell Culture ◽  
Self Assembling

The self-assembling is a spontaneous progression through which objects of nanophase/molecules materialize into prepared collections. Several biomolecules can interact and assemble into highly structured supramolecular structures, for instance, proteins and peptides, with fibrous scaffolds, helical ribbons, and many other functionalities. Various self-assembly systems have been established, from copolymers in blocks to three-dimensional (3D) cell culture scaffolds. Another advantage of self-assembly is its ability to manage a large variety of materials, including metals, oxides, inorganic salts, polymers, semiconductors, and various organic semiconductors. The most basic self-assembly of 3D nanomaterials is three primary forms of nanostructured carbon-based materials that perform a critical role in the progress of modern nanotechnologies, such as carbon nanotubes (CNTs), graphene, and fullerene. This review summarized important information on the 3D self-assembly nanostructure, such as peptide hydrogel, graphene, carbon nanotubes (CNTs), and fullerene for application in gene delivery, cancer therapy, and tissue engineering.

scholarly journals Self-Assembly Polymorphism of Regioisomeric Diketopyrrolopyrrole-Based π-Conjugated Organic Semiconductors

2019 ◽  
Vol 123 (2) ◽  
pp. 1185-1193 ◽  
Author(s):  
Xinrui Miao ◽  
Jinxing Li ◽  
Lei Ying ◽  
Fabien Silly ◽  
Chunshan Che ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Self Assembly ◽  
Conjugated Organic Semiconductors

Channel-restricted meniscus self-assembly for uniformly aligned growth of single-crystal arrays of organic semiconductors

2019 ◽  
Vol 24 ◽  
pp. 17-25 ◽  
Author(s):  
Wei Deng ◽  
Xiujuan Zhang ◽  
Huanli Dong ◽  
Jiansheng Jie ◽  
Xiuzhen Xu ◽  
...  
Keyword(s):  
Single Crystal ◽  
Organic Semiconductors ◽  
Self Assembly ◽  
Aligned Growth
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