geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Study of spectral behaviour and optical properties of cis/trans-bis(N-methylpyridinium-4-yl)diphenyl porphyrin adsorbed on layered silicates


, : Study of spectral behaviour and optical properties of cis/trans-bis(N-methylpyridinium-4-yl)diphenyl porphyrin adsorbed on layered silicates. Journal of Colloid and Interface Science 360(1): 26-30

The spectral properties of two dicationic porphyrins, cis- and trans-bis(N-methylpyridinium-4-yl)diphenyl porphyrins, upon adsorption on clay mineral templates were investigated. A series of reduced charge Nanocor montmorillonites was used as host templates. The main impact was given on the influence of the layer charge on the absorption and fluorescence spectra. Adsorption of the porphyrins led to significant changes in their spectra but preserved the photoactivity of the dyes. The changes can be attributed to two phenomena: structural changes (flattening) of the porphyrin molecules and molecular aggregation. Latter one was more influenced by the molecular structure of the dyes and influenced the properties of mainly trans-isomer. The formation of the assemblies was significantly influenced by the layer charge of montmorillonite template. This study presents the example how one is able to influence the spectral properties and possibly also the functionality of adsorbed photoactive molecules via a strategy of appropriate combination of a photoactive component with specific inorganic templates.

US$19.90

PMID: 21549391

DOI: 10.1016/j.jcis.2011.04.010


Other references

Kleiman-Shwarsctein, A.; Laursen, A.B.; Cavalca, F.; Tang, W.; Dahl, Søren.; Chorkendorff, I., 2011: A general route for RuO2 deposition on metal oxides from RuO4. A novel method for the deposition of RuO(2) from RuO(4)(g) on diverse metal oxides has been developed by grafting dopamine onto the otherwise un-reactive metal oxide surface. Oxygen evolution reaction on TiO(2) and the photoelectrochemical improve...

Pers, M., 1970: Long term care according to Werkös' model--still unexplained. Lakartidningen 67(39): 4372-4374

Pena, C.; Navarro, N.; Fernandez, A.; Vilches, S.S.garreta., 2000: Preliminary list of the avifauna of Yunque de Baracoa, Guantanamo, Cuba Listado preliminar de la avifauna del Yunque de Baracoa, Guantanamo, Cuba. Pitirre. Spring; 131: 12-14

Pickens, P.; Saris, A.; O'brien, C., 1993: Progressive B-CCL with hepatic failure Response to fludarabine and bilirubin pheresis. Blood 82(10 SUPPL 1): 575A

Duval, X.; Trad, S.; L.M.ing, V.; Longuet, P.; Leport, C.; Vildé, J.L., 2002: Paradoxical aggravation of tuberculosis after antiretroviral therapy in HIV-infected patients. Restoration of immunocompetence in HIV-infected patients after antiretroviral treatment can have unexpected effects. An unusual course of treated tuberculosis was observed in four HIV-infected patients soon after initiation of antiretroviral thera...

Yang, R.; Gao, H.; Wang, X.; Zhang, J.; Zeng, Z-Bang.; Wu, R., 2007: A semiparametric approach for composite functional mapping of dynamic quantitative traits. Functional mapping has emerged as a powerful tool for mapping quantitative trait loci (QTL) that control developmental patterns of complex dynamic traits. Original functional mapping has been constructed within the context of simple interval mappi...

Ghebremedhin, B., 2014: Human adenovirus: Viral pathogen with increasing importance. The aim of this review is to describe the biology of human adenovirus (HAdV), the clinical and epidemiological characteristics of adenoviral epidemic keratoconjunctivitis and to present a practical update on its diagnosis, treatment, and prophylax...

Phillips, Helen, 1998: Investigating the alternatives. Doctoral graduates are increasingly finding employment in areas other than academic research. Only one-third of those receiving doctorates are expected to go into the academic tenure system, but hiring in alternative areas has been strong enough t...

Mol'kov, Y.N., 1957: Oncological application of the diffuse precipitation reaction in agar and of the specific hemagglutination reaction Problems of Etiology and Patho-genesis of Tumors. The serum and blood of mice suffering from Ehrlich carcinoma and of rabbits with Brown-Pearce carcinoma were studied for antigenic properties in the precipitation reaction in agar. The difference between antigens of blood and serum in normal and i...

Erdogan, V.; Mehlenbacher, S.A.; Koksal, A.I.; Kurt, H., 2005: Incompatibility alleles expressed in pollen of Turkish hazelnut cultivars. Sphorophytic pollen-stigma incompatibility is a characteristic of the genus Corylus. Incompatibility alleles expressed in the pollen of Turkish hazelnut cultivars were identified. Fifteen cultivars were selected from the field collection at Giresu...