Micellization and luminescence of PEG-b-P4VP/Europium(III)/1,10-phenanthroline complex

Embedding lanthanide-functionalized polymers into hollow mesoporous silica spheres: a ship-in-a-bottle approach to luminescent hybrid materials

“…P4VP attached to the external surface or pore entrances of HMSS can be removed easily through ethanol washings, while HMSS-entrapped P4VP cannot be washed away due to its relatively large molecular size compared to the pore sizes. 35,36,39 This scenario is also supported by the 13 C solidstate NMR spectrum of P4VP@HMSS (Fig. S2 †).…”

“…Although FTIR and NMR spectroscopy, nitrogen physisorption and elemental analysis support the entrapment of P4VP into the HMSS matrix, it is difficult to be observed in the representative TEM image of P4VP@HMSS shown in Fig. 37 On the other hand, preservation of the characteristic peak (at 1558 cm À1 ) of the Phen ligand coordinated to lanthanide(III) ions 35,36 in Phen-Ln-P4VP@HMSS (Ln ¼ Eu or Tb) further demonstrated the existence of a stable Phen-Ln(III) complex. 41 In order to obtain luminescent hybrid materials, europium(III) and terbium(III) cations were introduced into P4VP@HMSS, using impregnation with aqueous solutions of commercially available hydrated chlorides.…”

“…A ship-in-a-bottle synthesis was achieved by radical polymerization of the 4VP monomer in the presence of initiator azobisisobutyronitrile (AIBN), generating P4VP@HMSS. [35][36][37][38] Compared to parent HMSS (Fig. 0.65 nm) compared to the mesopores of HMSS, it can readily access the void space of the host material.…”

Optical properties of amphiphilic copolymer-based self-assemblies

“…The presence of metal-ligand bonds also gives rise to unique optical properties. For example, ruthenium complexes possess extended absorption range along with high fluorescence intensity and color purity [41]. Lanthanide complexes allow the coordination polymers to offer unique optical properties including long excited state lifetimes, a large red shift between excitation and emission wavelengths, sharp emission lines and resistant to photo-bleaching [42].…”

“…Thus in many cases, the coordination bonds can be cleaved by environmental stimuli such as light, pH and temperature, providing the possibility of forming ''switchable'' systems [43,44]. Therefore, the coordination polymers may offer a new broad platform for the development of smart optical self-assemblies [41].…”