Efficient emission from various donor-acceptor quinolines with an ethynyl linkage (PnQ), which are known as efficient electrogenerated chemiluminescent molecules, was observed with time-resolved fluorescence measurement during the pulse radiolysis in benzene. On the basis of the transient absorption and emission measurements, and steady-state measurements, the formation of PnQ in the singlet ex...

A new type of single-shot transient absorption apparatus is described based on a bundle of optical fibers. The bundle contains 100 fibers of different lengths, each successively giving approximately 15 ps longer optical delay. Data are collected by imaging light from the exit of the bundle into a sample where it is overlapped with an electron pulse or laser excitation pulse, followed by imaging...

The degradation of lead halides perovskites under X-ray irradiation follows different pathways and has kinetics depending on if the radiolysis organic cation or halide cage is dominant.

a Sorbonne Universités, UPMC Univ Paris 06, UMR 8235, Laboratoire Interfaces et Systèmes Electrochimiques, F-75005 Paris, France. e-mail: [email protected] b Sorbonne Universités, CNRS, UMR 8235, Laboratoire Interfaces et Systèmes Electrochimiques, F-75005 Paris, France. c Laboratoire de Chimie Physique, CNRS UMR 8000, Université Paris-Sud, Bat 350, 91405 Orsay Cedex, France. e-mail:...

Introduction: Radiolytic dissociation of water produces a highly reactive combination of oxidizing (e.g., H 2 O 2 , OH radicals, and O 2) and reducing (e.g., H atoms and H 2) species [1]. In subsurface environments , radiolysis can produce gradients of both electron acceptors and electron donors that are possible sources of metabolic energy [2]. Radiation-induced chemical reactions have particu...

The oxidants produced by radiolysis and photolysis in the icy surface of Europa may be necessary to sustain carbon-based biochemistry in Europa's putative subsurface ocean. Because the subduction of oxidants to the ocean presents considerable thermodynamic challenges, we examine the formation of oxygen and related species in Europa's surface ice with the goal of characterizing the chemical stat...

Liquid cell electron microscopy has emerged as a powerful technique for in situ studies of nanoscale processes in liquids. An accurate understanding of the interactions between the electron beam and the liquid medium is essential to account for, suppress, and exploit beam effects. We quantify the interactions of high energy electrons with water, finding that radiolysis plays an important role, ...