Novel iodoargentates [Mn(4,4′-bpy)(DMF)3(H2O)] Ag5I7·4,4′-bpy (1), [Mn(4,4′-bpy)(DMSO)4]2Ag11I15 (2), [Mn(4,4′-bpy)2(DMSO)2(H2O)2]Ag10I12·2DMSO·2H2O (3) and [Mn2(4,4′-bpy)2(DMF)5(DMSO)2(H2O)]Ag10I14·2DMF (4) were prepared, templated by solvated [Mn(4,4′-bpy)]2+ cations.

The novel iron selenidostannates [Fe(bipy)₃]Sn₄Se₉·2H₂O (1) and [Fe(bipy)₃]₂[Sn₃Se₇]₂·bipy·2H₂O (2) (bipy = bipyridine) were prepared by the reactions of Sn, Se, FeCl₂·4H₂O, bipy, and dien with/without KSCN under hydrothermal conditions (dien = diethylenetriamine). In 1, four SnSe₅ units condense via edge sharing to form the novel 3-D framework selenidostannate (∞)³[Sn₄Se₉²⁻] containing an interpenetrating channel system. The [Fe(bipy)₃]²⁺ cations are accommodated in the different channels according to the conformation of the [Fe(bipy)₃]²⁺ cation. In 2, three SnSe₅ units share edges to form a 2-D (∞)²[Sn₃Se₇²⁻] layered anion, while two SnSe₅ units and one SnSe₄ unit are connected via edge sharing, forming a 1-D (∞)¹[Sn₃Se₇²⁻] chainlike anion. The (∞)¹[Sn₃Se₇²⁻], [Fe(bipy)₃]²⁺, bipy, and H₂O species are embedded between the (∞)²[Sn₃Se₇²⁻] layers. 2 is the first example of a selenidostannate constructed by both (∞)²[Sn₃Se₇²⁻]and (∞)¹[Sn₃Se₇²⁻] anions. The coexistence of 1-D (∞)¹[Sn₃Se₇²⁻] and 2-D (∞)²[Sn₃Se₇²⁻] anions in 2 might support the possible reaction mechanism that the (∞)²[Sn₃Se₇²⁻] anions are formed by condensation of the (∞)¹[Sn₃Se₇²⁻] chains. 1 and 2 exhibit band gaps at 1.43 and 2.01 eV, respectively.

The selenidostannates [Mn(dien) 2 ]Sn 3 Se 7 ·0.5H 2 O (1), [Fe(tatda)]Sn 3 Se 7 (2), and [Mn(dien) 2 ] 2 Sn 2 Se 6 (3) (dien = diethylenetriamine, tatda = 3,6,9,12-tetraazatetradecane-1,14-diamine) were prepared under solvothermal conditions. In compounds 1 and 2, the six Sn 3 Se 4 semi-cubes are bridged by double μ 2 -Se atoms to form the [Sn 3 Se 72-] n lamellar anion containing a elliptical 24-membered Sn 12 Se 12 ring, which show conformational flexibility of the 2D [Sn 3 Se 7 2-] n anion influenced by the counter cation. The [Mn(dien) 2 ] 2+

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A multifunctional nanotherapeutic agent based on mesoporous carbon is reported for multimodal imaging and cancer therapy. The nanoplatform consists of oxidized mesoporous carbon nanoparticles (OMCNs) as a near-infrared (NIR) photoresponse carrier and perfluoropentane (PFP) as a phase-change agent. OMCNs can absorb the NIR excitation light and convert it into heat, which not only triggers the thermal ablation of cancer cells but also promotes liquid–gas phase change for gasification of PFP to enhance the in site tumor ultrasound (US) and photoacoustic (PA) imaging signals. This nanoplatform demonstrates good biocompatibility, attractive ability to US/PA imaging, and excellent photothermal therapy efficiency.