Metallomesogens with Luminescent Behaviour: Palladium Complexes Derived from Alkylamide Tetraarylporphyrins

Moura, Nuno M. M.; Cuerva, Cristián; Cavaleiro, José A. S.; Mendes, Ricardo F.; Paz, Filipe A. Almeida; Cano, Mercedes; Neves, Maria G. P. M. S.; Lodeiro, Carlos

doi:10.1002/cplu.201500557

Cited by 15 publications

(4 citation statements)

References 53 publications

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“…Chitosan was purified following the procedure described in the literature [28]. H 2 TPP was synthesized as described in the literature [85]. TiO 2 was Evonik-Degussa P25.…”

Section: Methodsmentioning

confidence: 99%

New Materials Based on Cationic Porphyrins Conjugated to Chitosan or Titanium Dioxide: Synthesis, Characterization and Antimicrobial Efficacy

Castro

Moura

Figueira

et al. 2019

IJMS

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The post-functionalization of 5,10,15-tris(1-methylpyridinium-4-yl)-20-(pentafluorophenyl)porphyrin tri-iodide, known as a highly efficient photosensitizer (PS) for antimicrobial photodynamic therapy (aPDT), in the presence of 3- or 4-mercaptobenzoic acid, afforded two new tricationic porphyrins with adequate carboxylic pending groups to be immobilized on chitosan or titanium oxide. The structural characterization of the newly obtained materials confirmed the success of the porphyrin immobilization on the solid supports. The photophysical properties and the antimicrobial photodynamic efficacy of the non-immobilized porphyrins and of the new conjugates were evaluated. The results showed that the position of the carboxyl group in the mercapto units or the absence of these substituents in the porphyrin core could modulate the action of the photosensitizer towards the bioluminescent Gram-negative Escherichia coli bacterium. The antimicrobial activity was also influenced by the interaction between the photosensitizer and the type of support (chitosan or titanium dioxide). The new cationic porphyrins and some of the materials were shown to be very stable in PBS and effective in the photoinactivation of E. coli bacterium. The physicochemical properties of TiO2 allowed the interaction of the PS with its surface, increasing the absorption profile of TiO2, which enables the use of visible light, inactivating the bacteria more efficiently than the corresponding PS immobilized on chitosan.

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“…Chitosan was purified following the procedure described in the literature [28]. H 2 TPP was synthesized as described in the literature [85]. TiO 2 was Evonik-Degussa P25.…”

Section: Methodsmentioning

confidence: 99%

New Materials Based on Cationic Porphyrins Conjugated to Chitosan or Titanium Dioxide: Synthesis, Characterization and Antimicrobial Efficacy

Castro

Moura

Figueira

et al. 2019

IJMS

Self Cite

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“…The fiber optic probe was dipped for 15 min in the prepared seed layer solution and then annealed using the tube furnace for 15 min; this process was repeated 3-4 times. For the growth of ZnO nanorods on the seed layer, 0.088 g of HMTA and 0.188 g of zinc nitrate hexahydrate were diluted in 250 ml of deionized water and then the fabricated probe was dipped in the prepared mixture for 12 h at 100 °C temperature on the magnetic stirrer [44,45]]. The fiber probe was further annealed for 1 h at 150 °C temperature on the magnetic stirrer completing the synthesis process and thus the desired ZnO nanorods coated probe was obtained.…”

Section: Zno Nanorods Preparation: Hydrothermal Processmentioning

confidence: 99%

Ultra-sensitive detection of triethylamine (TEA) using LMR/LSPR based fiber optic probe

Jyoti,

Verma

2024

Phys. Scr.

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The excessive intake and inhalation of Triethylamine (TEA), which is an essential ingredient of pharmaceuticals, emulsifiers, dyestuff, soaps, rubber production etc., can cause health hazards such as blue haze, blurry vision, nausea, headache, and faintness; and to prevent the human beings from these hazards, it is crucial to detect TEA level. The present study explores the detection of TEA, using ZnO nanorods and porphyrin coated optical fiber probes. These probes have been synthesized and the topography, composition and morphology of different layers have been confirmed using FESEM, EDX and NMR characterizations. The sensitivity of this hybrid material-based probe has been estimated and was found to be 7-fold to the sensitivity of the metal oxide (ZnO nanorods) based fiber optic probe. The selectivity study has also been performed and it was observed that the analyte TEA has highest response (83.495 nm shift in peak wavelength) compared to other analytes such as the ethanol. This hybrid material-based fiber-optic probe offers the better selectivity and sensitivity for TEA and provides a very quick response time.

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“…Чем меньше различие между геометрическими размерами катионов и полости макроциклов, тем выше устойчивость образующихся при связывании ионов металлокомплексов. Примером макроциклических лигандов, комплексующих ионы металлов для создания ЖК, могут служить порфириновые производные [137][138][139] и краун-эфиры [140][141][142]. Причем в качестве мезогенов могут быть задействованы как алкилированные производные макроциклов, так и суперамфифильные комплексы макроцикл-ПАВ.…”

Section: гибридные металломезогенные системы на макроциклической матрицеunclassified

Polyfunctional Nanosystems on Amphiphilic and Hybrid Platform: Self-Assembly, Mesogenic Properties and Application

Zhil’tsova¹,

Ibatullina²,

Mirgorodskaya³

et al. 2020

Liq. Cryst. and their Appl.

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Обзор посвящен анализу современных публикаций в области самоорганизации амфифильных соединений, формирования полифункциональных наносистем различной морфологии, их прикладного потенциала в нано-и биотехнологиях. Рассмотрены самоорганизующиеся системы на основе амфифильных соединений, преимущественно катионных ПАВ, а также на гибридной платформе металл/амфифил. Для серии катионных ПАВ проведен анализ влияния структуры головной группы на функциональную активность (солюбилизирующие, каталитические, антимикробные свойства). Продемонстрированы перспективы их использования в качестве мицеллярных наноконтейнеров для гидрофобных спектральных зондов и лекарственных средств, невирусных векторов и антимикробных препаратов. Обсуждены гибридные системы на амфифильной платформе, в том числе металломицеллярные композиции, включающие металлы различной природы, установлена корреляция структура-активность при варьировании структуры ПАВ и природы металла. Отдельный раздел посвящен металломезогенам на амфифильной платформе, разработке наноматериалов различного назначения на их основе, применению в биомедицине, оптике, катализе. Спецификой таких систем является комбинация свойств, типичных для ПАВ (самоорганизация и поверхностная активность), и особенностей, характерных для координационных соединений (окислительно-восстановительные, каталитические, магнитные и оптические свойства). Введение иона металла может способствовать увеличению температурного интервала и концентрационной области существования мезофаз. Дополнительные возможности расширения морфологического поведения и функциональной активности предоставляет использование макроциклической матрицы, позволяющей создавать новые жидкокристаллические материалы.

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Metallomesogens with Luminescent Behaviour: Palladium Complexes Derived from Alkylamide Tetraarylporphyrins

Cited by 15 publications

References 53 publications

New Materials Based on Cationic Porphyrins Conjugated to Chitosan or Titanium Dioxide: Synthesis, Characterization and Antimicrobial Efficacy

New Materials Based on Cationic Porphyrins Conjugated to Chitosan or Titanium Dioxide: Synthesis, Characterization and Antimicrobial Efficacy

Ultra-sensitive detection of triethylamine (TEA) using LMR/LSPR based fiber optic probe

Polyfunctional Nanosystems on Amphiphilic and Hybrid Platform: Self-Assembly, Mesogenic Properties and Application

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