Structure and Properties of Oligothiophenes in the Solid State: Single Crystals and Thin Films

Fichou, Denis; Ziegler, Christiane

doi:10.1002/9783527611713.ch4

Cited by 209 publications

(319 citation statements)

References 323 publications

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“…From the peak positions a rectangular unit cell can be determined which contains two molecules in a herringbone packing that is comparable to reported crystal structures of oligothiophenes. 22 The Bragg rods can be indexed as the (1,1) and (0,2) reflections of a rectangular unit cell with lattice constants a ) 5.49 Å and b ) 7.81 Å, identical to the values previously obtained for SAM formation on SiO 2 . 23 The shape of the Bragg rods in reciprocal space (decay of the intensity along q z at constant q p ) shows upright standing molecules because the maximum intensity occurs at the Yoneda reflection.…”

mentioning

confidence: 89%

Ordered Semiconducting Self-Assembled Monolayers on Polymeric Surfaces Utilized in Organic Integrated Circuits

et al. 2010

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We report on a two-dimensional highly ordered self-assembled monolayer (SAM) directly grown on a bare polymer surface. Semiconducting SAMs are utilized in field-effect transistors and combined into integrated circuits as 4-bit code generators. The driving force to form highly ordered SAMs is packing of the liquid crystalline molecules caused by the interactions between the linear alkane moieties and the π-π stacking of the conjugated thiophene units. The fully functional circuits demonstrate long-range order over large areas, which can be regarded as the start of flexible monolayer electronics.

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confidence: 89%

Ordered Semiconducting Self-Assembled Monolayers on Polymeric Surfaces Utilized in Organic Integrated Circuits

et al. 2010

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“…This is also observed in experiments. When the coexistence of structures formed from flat lying and upright standing molecules is observed, the first ones are often responsible for nucleating the latter [83,84].…”

Section: Obtaining the Critical Island Sizementioning

confidence: 99%

“…They are a representative group within the vast number of molecules with extended dimensionality. In fact, we will restrict ourself mostly to the oligophenylene molecule para-Sexiphenyl (6P) [12][13][14][15]. This model molecule is widely investigated for its potential use in organic thin film transistors (OTFT), organic In an OTFT, the conjugated molecules should be oriented in an upright orientation.…”

Section: Introductionmentioning

confidence: 99%

Nucleation and growth of thin films of rod-like conjugated molecules

Hlawacek

Teichert

2013

J. Phys.: Condens. Matter

107

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Abstract. Thin films formed from small molecules rapidly gain importance in different technological fields. To explain their growth, methods developed for zero-dimensional atoms as the film forming particles are applied. However, in organic thin film growth the dimensionality of the building blocks comes into play. Using the special case of the model molecule para-Sexiphenyl, we will emphasize the challenges that arise from the anisotropic and one-dimensional nature of building blocks. Differences or common features with other rodlike molecules will be discussed. The typical morphologies encountered for this group of molecules and the relevant growth modes will be investigated. Special attention is given to the transition between flat lying and upright orientation of the building blocks during nucleation. We will further discuss methods to control the molecular orientation and describe the involved diffusion processes qualitatively and quantitatively.

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“…[1,2,3] because of their potential applications in manufacture of optoelectronic devices, and solar cells(author?) [4]. The low-lying excitations in such materials are characterized by the π electrons, which have itinerant nature, and form the energy levels near the chemical potential (Fermi level).…”

Section: Introductionmentioning

confidence: 99%

A Fortran 90 Hartree–Fock program for one-dimensional periodic π-conjugated systems using Pariser–Parr–Pople model

Gundra

Shukla

2012

Computer Physics Communications

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Pariser-Parr-Pople (P-P-P) model Hamiltonian is employed frequently to study the electronic structure and optical properties of π-conjugated systems. In this paper we describe a Fortran 90 computer program which uses the P-P-P model Hamiltonian to solve the Hartree-Fock (HF) equation for infinitely long, onedimensional, periodic, π-electron systems. The code is capable of computing the band structure, as also the linear optical absorption spectrum, by using the tight-binding (TB) and the HF methods. Furthermore, using our program the user can solve the HF equation in the presence of a finite external electric field, thereby, allowing the simulation of gated systems. We apply our code to compute various properties of polymers such as trans-polyacetylene (t-PA), poly-para-phenylene (PPP), and armchair and zigzag graphene nanoribbons, in the infinite length limit.

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Structure and Properties of Oligothiophenes in the Solid State: Single Crystals and Thin Films

Cited by 209 publications

References 323 publications

Ordered Semiconducting Self-Assembled Monolayers on Polymeric Surfaces Utilized in Organic Integrated Circuits

Ordered Semiconducting Self-Assembled Monolayers on Polymeric Surfaces Utilized in Organic Integrated Circuits

Nucleation and growth of thin films of rod-like conjugated molecules

A Fortran 90 Hartree–Fock program for one-dimensional periodic π-conjugated systems using Pariser–Parr–Pople model

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