Publications by Kay Severin | EPFL Graph Search

The constitutional dynamic chemistry of Au3(pyrazolate)3 complexes

Rosario Scopelliti, Kay Severin, Farzaneh Fadaei Tirani, Noga Eren

Trinuclear Au3(Pz)3 complexes (Pz = pyrazolate) have been used extensively as components in molecular and polymeric nanostructures. However, the constitutional dynamic chemistry of Au3(Pz)3 complexes remains largely unexplored. We have investigated exchang ...

Royal Society of Chemistry (RSC)2025

Ambiphilic Reactivity of Iridium Complexes with N-Heterocyclic Vinylidene Ligands

Rosario Scopelliti, Kay Severin, Farzaneh Fadaei Tirani, Tak Hin Wong, Paul Varava

Room-temperature stable diazoolefins provide access to a unique class of carbon-donor ligands: N-heterocyclic vinylidenes. Herein, we describe iridium complexes with terminal N-heterocyclic vinylidene ligands. Cationic complexes of type [Cp*IrClL]X (X = Sb ...

American Chemical Society (ACS)2025

Discrete Heterotrimetallic Assemblies Based on Rod‐Shaped FeII‐Metalloligands and a ZnII‐Porphyrin/RuII‐Metallacycle

Kay Severin, Giacomo Cecot, Erica Giraldi

An efficient strategy for the preparation of heterometallic discrete porphyrin assemblies, tuned both in dimensions and number of metal centers, is described. Five rod‐shaped di‐pyridyl FeII‐metalloligands, with varied length (1.5 – 3.2 nm), lateral substi ...

Wiley2025

Palladium-based coordination cages as dynamic crosslinks in acrylamide hydrogels

Kay Severin, Damien Wen Chen, Sylvain Alexandre Marie Sudan, Chaolei Hu

Soft polymer networks with palladium cages as crosslinks can be obtained by combining polymeric N-donor ligands with PdII salts in organic solvents. Herein, we describe an alternative procedure that enables the preparation of hydrogels with PdnL2n-type jun ...

Royal Society of Chemistry (RSC)2025

Selective Recognition and Extraction of Short‐Chain Perfluoroalkyl Carboxylates by a Supramolecular Receptor

Kay Severin, Farzaneh Fadaei Tirani, Damien Wen Chen

A supramolecular receptor for short‐chain perfluoroalkyl carboxylates was developed. The receptor displays a cage‐like geometry, with a defined binding site for the carboxylate head groups and an opening for the perfluoroalkyl side chains. The anionic gues ...

Wiley2025

1,2‐Bis‐Triazenylarenes Enable Vicinal Sandmeyer‐Type Reactions

Kay Severin, Farzaneh Fadaei Tirani, Christeena Mathew, Anastasia Gitlina

The introduction of two nucleophiles in the vicinal position of arenes via Sandmeyer‐type reactions is compromised by the problematic diazotization of ortho‐diaminoarenes. Herein, it is shown that vicinal substitution reactions are facilitated by the use ...

Wiley2025

Nano onions based on an amphiphilic Au3(pyrazolate)3 complex

Kay Severin, Farzaneh Fadaei Tirani, Atena-Bianca Solea

Multilayer vesicles with an onion-like architecture can form by self-assembly of organic amphiphiles such as dendrimers, small-molecule surfactants, and block copolymers. Thus far, there are limited reports about multilayer vesicles based on coordination c ...

ROYAL SOC CHEMISTRY2024

Nitrous oxide as diazo transfer reagent

Kay Severin

Nitrous oxide, commonly known as "laughing gas", is formed as a by-product in several industrial processes. It is also readily available by thermal decomposition of ammonium nitrate. Traditionally, the chemical valorization of N 2 O is achieved via oxidati ...

Royal Society of Chemistry (RSC)2024

Nanogels with Metal‐Organic Cages as Functional Crosslinks

Kay Severin, Chaolei Hu

A dinuclear metal-organic cage with four acrylate side chains was prepared by self-assembly. Precipitation polymerization of the cage with N-isopropylacrylamide yielded a thermoresponsive nanogel. The host properties of the cage were retained within the ge ...

Wiley-VCH Verlag GmbH2024

Stepwise synthesis of heterotrimetallic FeII/PdII/AuI coordination cages

Kay Severin, Farzaneh Fadaei Tirani, Noga Eren

The synthesis of heterotrimetallic molecular cages is reported. The assemblies contain three types of coordination compounds: FeII clathrochelate complexes, AuI3(pyrazolate)3 complexes, and [PdII(pyridine)4]2+ complexes. The cages were obtained in a stepwi ...

2024