Fluorescent templates

Fig. 20.9. Fluorescent template molecules used to imprint silicas.

In the case of PAH, adding a second template leads to highly increased selectivity and sensitivity of the materials. With fluorescence e.g. a detection limit of some ng/1 is achieved. 

Macrocyclic complexes of zinc have inspired interest in varied areas such as supramolecular and biomimetic chemistry including hydrolysis enzymes, such as phosphatases and esterases, and also for the fluorescent detection of zinc. The polyaza macrocycles and their A--functionalized derivatives are particularly well represented. An important aspect of macrocycle synthesis is the use of metal templates to form the ligand. Examples of zinc as a template ion will be discussed where relevant. 

Fig. 7.10 Schematic representation of fluorescent nanotubes prepared through the alternate deposition of PEI and PTCDA in AAO membrane templates. (Reproduced from [119] with permission of the American Chemical Society, Copyright 2006 American Chemical Society).

On the intergrowth structure of zeolite crystals as revealed by wide field and confocal fluorescence microscopy of the template removal processes... 

Keywords zeolites fluorescence confocal fluorescence microscopy template removal intergrowth... 

Figure 5. a) Fluorescence microphotographs of ZSM-5 crystals taken during template removal and b) confocal fluorescence images taken at 700 K (561-nm laser, detection at 575-635 nm, intensity presented as a gray scale). 

Chowdhury A, Wachsmann-Hogiu S, Bangal PR, Raheem I, Peteanu LA (2001) Characterization of chiral H and J aggregates of cyanine dyes formed by DNA templating using stark and fluorescence spectroscopies. J Phys Chem B 105 12196—12201... 

Gouanve F, Schuster T, Allard E, Meallet-Renault R, Larpent C (2007) Fluorescence quenching upon binding of copper ions in dye-doped and ligand-capped polymer nanoparticles a simple way to probe the dye accessibility in nano-sized templates. Adv Funct Mater 17 2746-2756... 

Besides the formation of luminescent silver clusters in fixed cells, likely due to the presence of proteins, fluorescent silver clusters have been synthesized using proteins as templates. In 2008, Pal et al. reported on the use of an enzyme, bovine pancreatic a-chymotrypsin (CHT) as biotemplate during the chemical reduction of... 

Shang L, Dong S (2008) Facile preparation of water-soluble fluorescent silver nanoclusters using a poly electrolyte template. Chem Commun 9 1088-1090... 

Shen Z, Duan H, Frey H (2007) Water-soluble fluorescent ag nanoclusters obtained from multiarm star poly(acrylic acid) as molecular hydrogel templates. Adv Mater 19 349-352... 

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