Andrey Baranov

Coinage metal(I) clusters based on a flexible P,P′(N,N′)2-ligand: colorful phosphorescence, abnormal thermal quenching behavior and anticounterfeiting application Unprecedented pseudosymmetric CuI, AgI and AuI clusters with pronounced metallophilic Au–X (X = Cu, Ag, Au) or Ag–Ag contacts have been assembled using 1,2-bis[bis(pyridin-2-ylmethyl)phosphino]ethane (L), an innovative P,P′(N,N′)2- ligand.

Brightly emissive octahedral Cu4X4 clusters showing polymorphic-dependent and mechanochromic phosphorescence A series of [Cu4X4L2] clusters (X = Cl, Br, I) with an octahedral Cu4X4 core has been synthesized using bis(t-butyl)(2-pyridyl)phosphine (L1) and bis(2-pyridyl)-t-butylphosphine (L2). At room temperature, these clusters exhibit a bright 3(M+X)LCT phosphorescence (λmax = 514–570 nm) with the quantum yields up to 84% and lifetimes of 3–22 µs.

1. Introduction Ultrasonic sensors are widely used in various fields of modern science and technology, such as medicine, non-destructive testing, hydroacoustics, acoustoelectronics, etc. [1,2,3,4,5,6,7,8]. In particular, one of the actual directions of the development of ultrasonic sensors is in navigation and motion control, where acoustic sensors can compete with MEMS [9,10].