Publication

Functional hole transport materials for optoelectronic and/or electrochemical devices

Michael Graetzel, Mohammad Khaja Nazeeruddin, Michael Saliba
2016
Patents

Résumé

The present invention relates to a compound of formula (I) based on a structure comprising functionalized spirofluorene and fused aromatics or non-aromatic rings with at least one heteroatom, and used as hole transporting material in a optoelectronic and/or photoelectrochemical device.

Source officielle

https://infoscience.epfl.ch/entities/publication/702f1eba-ac65-4e0a-ab46-7242f6bf7613

À propos de ce résultat

Cette page est générée automatiquement et peut contenir des informations qui ne sont pas correctes, complètes, à jour ou pertinentes par rapport à votre recherche. Il en va de même pour toutes les autres pages de ce site. Veillez à vérifier les informations auprès des sources officielles de l'EPFL.

Michael Graetzel, Mohammad Khaja Nazeeruddin, Michael Saliba
2016
Patents

Résumé

Source officielle

https://infoscience.epfl.ch/entities/publication/702f1eba-ac65-4e0a-ab46-7242f6bf7613

À propos de ce résultat

Concepts associés (11)

Aromaticité

En chimie, l'aromaticité est une propriété de certaines des structures moléculaires avec un composé cyclique qui est particulièrement stable. L'aromaticité est définie par la règle de Hückel ; les molécules organiques respectant cette règle sont appelées « composés aromatiques ». Un composé organique est dit aromatique quand il satisfait aux conditions suivantes : présence d'un cycle comportant un système π conjugué, formé de liaisons doubles et/ou de doublets non-liants ; chaque atome du cycle comporte une orbitale p ; les orbitales p se recouvrent (système π conjugué), la molécule étant plane au niveau de ce composé cyclique ; la délocalisation des électrons π entraîne une diminution de l'énergie de la molécule.

Aromatic ring current

An aromatic ring current is an effect observed in aromatic molecules such as benzene and naphthalene. If a magnetic field is directed perpendicular to the plane of the aromatic system, a ring current is induced in the delocalized π electrons of the aromatic ring. This is a direct consequence of Ampère's law; since the electrons involved are free to circulate, rather than being localized in bonds as they would be in most non-aromatic molecules, they respond much more strongly to the magnetic field.

Möbius aromaticity

In organic chemistry, Möbius aromaticity is a special type of aromaticity believed to exist in a number of organic molecules. In terms of molecular orbital theory these compounds have in common a monocyclic array of molecular orbitals in which there is an odd number of out-of-phase overlaps, the opposite pattern compared to the aromatic character to Hückel systems. The nodal plane of the orbitals, viewed as a ribbon, is a Möbius strip, rather than a cylinder, hence the name.

Afficher plus

Publications associées (25)

Multiphysics model for assessing photoelectrochemical phenomena under concentrated irradiation

Sophia Haussener, Isaac Thomas Holmes-Gentle, Franky Esteban Bedoya Lora

A multiphysics model was developed for a photoelectrochemical (PEC) cell at the device level to simulate water splitting operating under concentrated irradiation (between 50 to 600 kW m−2). The 2D model couples charge, heat, mass, photon, and momentum tran ...

2023

Double-bond delocalization in non-alternant hydrocarbons induces inverted singlet-triplet gaps

Anne-Clémence Corminboeuf, Jacob Terence Blaskovits, Marc Hamilton Folkmann Garner

Molecules where the first excited singlet state is lower in energy than the first excited triplet state have the potential to revolutionize OLEDs. This inverted singlet-triplet gap violates Hund's rule and currently there are only a few molecules which are ...

ROYAL SOC CHEMISTRY2023

Double-bond delocalization in non-alternant hydrocarbons induces inverted singlet-triplet gaps

Anne-Clémence Corminboeuf, Jacob Terence Blaskovits, Marc Hamilton Folkmann Garner

ROYAL SOC CHEMISTRY2023

Afficher plus