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Structural and electronic characterisation of ?-extended tetrathiafulvalene derivatives as active components in field-effect transistors.

ABSTRACT: The electronic and structural properties of two tetrathiafulvalene derivatives bearing aromatic benzene rings are reported. Thin film transistors of these materials show p-type characteristics with comparable mobility values. It is found that the rigidification of the molecule is beneficial for reducing the reorganisation energy but also has an unfavorable impact on the electronic structure dimensionality.

SUBMITTER: Campos A

PROVIDER: S-EPMC5059789 | biostudies-other | 2016 Sep

REPOSITORIES: biostudies-other

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Structural and electronic characterisation of π-extended tetrathiafulvalene derivatives as active components in field-effect transistors.

Campos Antonio A Oxtoby Neil N Galindo Sergi S Pfattner Raphael R Veciana Jaume J Bromley Stefan T ST Rovira Concepció C Mas-Torrent Marta M

CrystEngComm 20160712 33

The electronic and structural properties of two tetrathiafulvalene derivatives bearing aromatic benzene rings are reported. Thin film transistors of these materials show p-type characteristics with comparable mobility values. It is found that the rigidification of the molecule is beneficial for reducing the reorganisation energy but also has an unfavorable impact on the electronic structure dimensionality. ...[more]

PMID: 27774040

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Project description:BACKGROUND:Co-crystal is a structurally homogeneous crystalline material that contains two or more neutral building blocks that are present in definite stoichiometric amounts. The main advantage of co-crystals is their ability to generate a variety of solid forms of a drug that have distinct physicochemical properties from the solid co-crystal components. In the present investigation, five co-crystals containing 2-amino-6-chloropyridine (AMPY) moiety were synthesized and characterized. RESULTS:The crystal structure of 2-amino-6-chloropyridine (AMPY) (I), and the robustness of pyridine-acid supramolecular synthon were discussed in four stoichiometry co-crystals of AMPY…BA (II), AMPY…2ABA (III), AMPY…3CLBA (IV) and AMPY…4NBA (V). The abbreviated designations used are benzoic acid (BA), 2-aminobenzoic acid (2ABA), 3-chlorobenzoic acid (3CLBA) and 4-nitrobenzoic acid (4NBA). All the crystalline materials have been characterized by (1)HNMR, (13)CNMR, IR, photoluminescence, TEM analysis and X-ray diffraction. The supramolecular assembly of each co-crystal is analyzed and discussed. CONCLUSIONS:Extensive N---H?·?·?·?N/N---H?·?·?·?O/O---H?·?·?·?N hydrogen bonds are found in (I-V), featuring different supramolecular synthons. In the crystal structure, for compound (I), the 2-amino-6-chloropyridine molecules are linked together into centrosymmetric dimers by hydrogen bonds to form homosynthon, whereas for compounds (II-V), the carboxylic group of the respective acids (benzoic acid, 2-aminobenzoic acid, 3-chlorobenzoic acid and 4-nitrobenzoic acid) interacts with pyridine molecule in a linear fashion through a pair of N---H?·?·?·?O and O---H?·?·?·?N hydrogen bonds, generating cyclic hydrogen-bonded motifs with the graph-set notation [Formula: see text] , to form heterosynthon. In compound (II), another intermolecular N---H?·?·?·?O hydrogen bonds further link these heterosynthons into zig-zag chains. Whereas in compounds (IV) and (V), these heterosynthons are centrosymmetrically paired via N---H?·?·?·?O hydrogen bonds and each forms a complementary DADA [D?=?donor and A?=?acceptor] array of quadruple hydrogen bonds, with graph-set notation [Formula: see text], [Formula: see text] and [Formula: see text].

Dataset Information

Structural and electronic characterisation of ?-extended tetrathiafulvalene derivatives as active components in field-effect transistors.

Publications

Structural and electronic characterisation of π-extended tetrathiafulvalene derivatives as active components in field-effect transistors.

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