Self-Assembly of an Octanuclear Platinum(II) Tetragonal Prism from a New Pt4II Organometallic Star-Shaped Acceptor and Its Nitroaromatic Sensing Study

[2 + 4] self-assembly of a pyrene-functionalized Pt-8(II) tetragonal prism (2) is achieved using a newly designed star-shaped organometallic acceptor (1) in combination with an amide-based clip donor (L). The propensity of this prism (2) as a selective sensor for nitroaromatics (2,4-dinitrotoluene, 1,3,5-trinitrotoluene, and picric acid), which are the chemical constituents of many commercial explosives, has been examined.