Electric conduction through supramolecular assemblies of triarylamines

A method for modifying a surface (S) of a solid conducting material, wherein said method comprises:

• positioning a surface (S) of a solid conducting material and a surface (S′) of another conducting solid material so that surface (S′) is facing said surface (S);
• putting said surface (S) in contact with a liquid medium comprising in solution at least triarylamines of formula (I);
• applying a potential difference between said surface (S) and said surface (S′), and
• subjecting said liquid medium comprising in solution at least triarylamines of formula (I) to an electromagnetic radiation or to chemical or electrochemical oxidation to produce triarylammonium radicals from said triarylamines;
• wherein said triarylamines of formula (I) are as follows:
• wherein:
• each of the groups -A1- and -A2-, either identical or different designates a covalent bond or a group —O—, —S—, —NH—, —NH(C═O)—, or —NR3—;
• each of the groups R1, R2 and R3, either identical or different, represents:
• an aromatic group;
• or
• a hydrocarbon chain comprising from 4 to 30 carbon atoms, optionally halogenated and optionally interrupted with one or more heteroatoms selected from N, O or S;
• or
• a polyethylene glycol chain;
• and
• R is a terminating group;
• and
• forming fibrillar supramolecular species comprising triarylamines of formula (I) immobilized on said surface (S) of said solid conducting material.

A method for a preparing or repairing an electronic or optoelectronic device, said method comprising:

• (i) preparing a liquid medium containing said triarylamines of formula (I) below:
• wherein:
• each of the groups -A1- and -A2-, either identical or different designates a covalent bond or else a group —O—, —S—, —NH—, —NH(C═O)—, or —NR3—;
• each of the groups R1, R2 and R3, either identical or different, represents:
• an aromatic group;
• or
• a hydrocarbon chain comprising from 4 to 30 carbon atoms, optionally halogenated and optionally interrupted with one or more heteroatoms selected from N, O or S;
• or
• a polyethylene glycol chain;
• and
• R is a terminating group;
• (ii) providing a solid device comprising two conducting metal materials having surfaces (S) and (S′) facing each other and made of at least one metal material;
• (iii) putting said solid conducting device into contact with said liquid medium containing said triarylamines of formula (I);
• (iv) subjecting said liquid medium containing said triarylamines of formula (I) to an electric field;
• (v) subjecting said liquid medium containing said triarylamines of formula (I) to an electromagnetic radiation while subjecting said liquid medium containing said triarylamindes of formula (I) to an electric field according to step (iv);
• and
• (vi) obtaining an electronic or optoelectronic device comprising two conducting metal materials, the surfaces of which, (S) and (S′) respectively, are electrically interconnected by an organic material comprising electronic conducting fibrillar organic supramolecular species comprising an association of triarylamines of formula (I).