第5章-结研案例.ppt

Figure 1. (a) ESI-MS spectra in methanol of fragment [HgCl(L)]+ for complex 3 (HgCl2L, L:1,8-bis(3,5-dimethyl-1H-pyrazol-1-yl)-3,6-dioxaoctane) and (b) theoretical isotopic distribution of 3. Molecular peaks of the cations are observed with the same isotope distribution as the theoretical ones. As an example, ESI-MS spectra of complex 3 for fragment [HgCl(L)]+ and its theoretical isotopic distribution is presented (Figure 1). Inorg. Chem., 2009,48, 8736-8750; ESI mass spectra of PF–β-CD (A) and a mixture solution (1:1 molar ratio) of PF and β-CD (5 × 10–3 mol?dm–3) (B). Dalton Trans., 2012, 41, 3006 The ESI mass spectrum of the complex PF–β-CD (Fig. 1A) shows two principal peaks at m/z 428.12 (RA, 51.4%) and 1173.64 (RA, 100%), corresponding to the ions: [K4Fe(C2O3)3]+ and [K–β-CD]+, respectively. There are also several significant peaks at m/z 1301.42 (RA, 36.1%) and 1610.40 (RA, 22.4%), due to [K2C2O4–β-CD]+ and [K4Fe(C2O4)3–β-CD]+ ions respectively. Besides, two small peaks at m/z 1482.42 (RA, 7.1%) and 1522.10 (RA, 11.9%) are attributable to the 1:1 supramolecular ions: [K3Fe(C2O4)2–β-CD]+ and [K4Fe(C2O4)2–β-CD]+, respectively. The data reveal that several supramolecular complexes of β-CD were formed under ESI conditions. Mass spectra of PF (a), the physical mixture of PF and β-CD (b), and PF–β-CD (c) at 35.6 min. Fig. 12 Proposed formation mechanisms of CO22+ and O4+ ions. Fig.1 a) Structure of anionic surfactant-encapsulated organically grafted polyoxometalate (SEOP). b) Reversible morphology change of SEOP-2 between fibrous and spherical structures upon stimulation by light. Fig.2 O1s XPS spectra of a) initial SEOP-2 self-assembly cast from CHCl3/CH3OH (4:1 v/v) solution; b) initial self-assembly solution with 30 min of UV irradiation and then c) 30 min of visible-light irradiation. By making use of this building block, we have successfully achieved smart selfassembled architectures that are controlled by reversible destruction and rebuilding of