Photonic properties

The electronic and photonic properties of the arylated TEEs were investigated, with a special emphasis on the effects caused by degree and pattern of... 

Birge RR, Pierce BM (1979) A theoretical analysis of two-photon properties of linear polyenes and the visual chromophores. J Chem Phys 70 165-178... 

Z. Marie, M. Moles, and J. P. Vigier, Red shifting of light passing through clusters of galaxies A new photon property Lett. Nuovo Cimento 18(9) (Ser. 2), 269-276 (1977). 

Nanoscale structures such as inverse opals have fascinating photonic properties related to Natural nanostructures with potential applications in optical computing. 

A better description of the photonic properties of the polymers was made by comparison with model compounds 17—20 (Fig. 15). 

Wecksler SR, Mikhailovsky A, Korystov D, Buller F. Single- and two-photon properties of a dye-derivatized Roussin s red salt ester (Fe2( i-RS)2(NO)4) with a large TPA cross section. Inorg Chem 2007 46 395-402. 

Conversely, a periodic array of anti-dots could modify the electronic properties of a semiconductor. In addition, periodic cavities could be used to selectively adsorb or transport molecules or to perform chemical modification of guest molecules by utilizing electronic or photonic properties of semiconductors. Several studies showed that it was possible irreversibly to bind templating molecules within the semiconductor lattice and through inorganic-organic interactions to modify electronic and photonic properties [59a, b]. 

This equation incorporates the effective molecular weight (Meff) contributing to OP photonic properties. Meff is often significantly smaller than the number... 

Photonic properties of 83a-b were reported and compared with both OP and TP lasing performance of 53 [176]. Large Stokes shifts were observed for the emission of 83b, consistent with the observations of 53. TPA was discussed from a qualitative point of view. 

This review describes some of the recent developments in materials which exhibit enhanced two-photon absorption that can initiate photopolymerization or up-converted emission. Various optical methods including femtosecond time-resolved pump-probe experiments to characterize the two-photon properties are discussed. Finally, the applications of two-photon processes to optical power limiting, up-converted lasing, 3-D data storage, 3-D micro-fabrication, two-photon fluorescence microscopy and bio-imaging, and two-photon photodynamic therapy are presented. 

In another demonstration, we found that the small aggregates formed via the TASA process were immediately useful as templates to generate three-dimensional lattices of spherical colloids with symmetries or orientations other than those commonly observed for the spherical systems on flat substrates." For example, when 1% of the sqnare-shaped, tetramer aggregates was mixed with spherical colloids, they were able to direct the spherical colloids into an opaline lattice with its (100) planes oriented parallel to the surface of a flat substrate (Figure 11.1 IB). In this case, the three-dimensional opaline lattice tended to develop a symmetry similar to the added aggregates during the crystallization process. This ability to control the orientation of an opaline lattice provides another way to change the photonic properties of a colloidal crystal. 

Two-photon properties of downconverted fields are studied in coincidence-count measurements. Such measurements are conveniently described in terms of a two-photon amplitude sdn defined as follows ... 

Metal-functionalized dendritic assemblies have been demonstrated to be a fertile area with competitive potential for purely organic structures for their photonic properties [29]. This chapter aims at providing on overview of the different outstanding possibilities that dendrimers advantageously offer, first from a fundamental perspective by describing the main routes to build these nanometer-sized species, and then, by describing their photophysical properties, and eventually to the applications developed for these materials in various areas. 

Biologists attribute molecular intelligence to the process of evolution. However, molecular intelligence might better be evaluated with intended function in mind since Nature may have optimized a particular molecular function on the basis of an entirely different set of criteria. Consider BR as an example. The photonic properties of BR are a byproduct of evolution rather than a primary feature essential for survival of Halobacteria, Before these properties can be optimally exploited for construction of a photonic device, it is often necessary to modify the structure of BR. For example, Vsevolodov and Dyukova utilized BR with a synthetic chromophore (5-keto BR) [41] and Hampp et al... 

This volume is closed by a contribution by Paul Mulvaney and Luis Liz-Marzan who used the nanocoating of Au-nanoparticles as a first step in the rational design of nanohybrids with very special optical and photonic properties. The ability to hybridise metals and inorganic oxides on the colloidal scale while there is no direct bond on a molecular level nicely underlines the potential of modern colloid chemistry to employ and merge very different building blocks on the mesoscale and to realise hybrid situations and high performance systems which are otherwise not accessible. 

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