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Low mechanical pressure on amorphous gold thiolate coordination polymers allows the formation of transparent and red emissive glasses.

The structures of two lamellar silver thiolate coordination polymers [Ag­(p-SPhCO2H)] n (1) and [Ag­(p-SPhCO2Me)] n (2) are described for the first time. Their inorganic part is composed of distorted Ag3S3 honeycomb networks separated by noninterpenetrated thiolate ligands. The main difference between the two compounds arises from dimeric hydrogen bonds present for the carboxylic acids. Indepth photophysical studies show that the silver thiolates exhibit multiemission properties, implying luminescence thermochromism. More interestingly, the synthesis of a heterometallic lamellar compound, [Ag0.85Cu0.15(p-SPhCO2H)] n (3), allows to obtain mixed metal thiolate coordination polymers and to tune the photophysical properties with the excitation wavelengths from a green vibronic luminescence to a single red emission band.

A copper thiolate coordination polymer, [Cu(p-SPhCOMe)], is described and exhibits, under UV, luminescence thermochromism, associated to a unique well-separated triple emission. This compound is the most promising candidate as a ratiometric temperature sensor, working in a wide temperature range, from 100 to 500 K, with a great sensitivity.

Lamellar gold(i)-carboxythiophenolate exhibits intrinsic dual emission and a high sensitivity as a ratiometric thermometer.

Two copper(II)-carboxylate disulfide coordination polymers [Cu((OCPhS))(HO)] (1, 2) and one copper(I)-thiolate coordination polymer [Cu( p-SPhCOH)] (3) have been synthesized using either the 4-mercaptobenzoic acid (HSPhCOH) or the 4,4'-dithiodibenzoic acid ((SPhCOH)) as ligand. These three compounds were characterized by X-ray diffraction, IR, and thermogravimetric analyses. Compounds 1 and 2 are polymorphs with the presence, for both, of dinuclear paddle-wheel copper(II)-carboxylates. In 1, the adjacent dimeric Cu units are linked by two (OCPhS) ligands generating a cyclic loop chain, and in 2, each pair of Cu (II) atoms is linked by four ligands to create 2D networks, that are 2-fold interpenetrated. Compound 3 presents a lamellar structure, with an exceptional thermal and chemical stability, and exhibits intrinsic multiple emission between 485 and 660 nm. The different intensities of these bands generate a cyclic luminescence thermochromism from yellow to green to yellow.

The discovery of a universal memory that exhibits fast access speed, high-density storage, and nonvolatility has fuelled research into phase-change materials over the past decades. In spite of the efficiency of the inorganic chalcogenides for phase-change random access memory (PCRAM), they still have some inherent drawbacks, such as high temperature required for phase change and difficulty to control the domain size of the phase change, because of their brittleness. Here we present a Au I -thiolate coordination polymer which undergoes two successive phase changes on application of mild heating (< 200 °C) from amorphous-to-crystal-line1-to-crystalline2 phases. These transitions are reversible upon soft hand grinding. More importantly, each phase exhibits different photoluminescent properties for an efficient optical read-out. We believe that the ability of the Au I -thiolate coordination polymer to have reversible phase changes under soft conditions and at the same time to display distinct optical signals, can pave the way for the next generation of PCRAM.

Formation of flexible, red emissive and highly stable fibers of [Au(SPh)]n that can be calcined to generate gold nanoparticle composite fibers with a SERS effect.