Surface morphology and optical properties of porphyrin/Au and Au/porphyrin/Au systems

Kalachyova, Y.; Lyutakov, Oleksiy; Solovyev, Andrey I.; Slepička, Petr; Švorčı́k, Václav

doi:10.1186/1556-276x-8-547

Cited by 16 publications

(11 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, it appears that the difference in size of the prepared particles is hard to correlate with macroscopic properties of ILs, such as viscosity or surface tension [95]. The nanoparticles prepared as solutions may be used in different applications on the basis of surface grafting on polymer substrates [100][101][102][103], mostly used in tissue engineering [104][105][106][107] or for construction of antibacterial substrates [108].…”

Section: Vacuum Sputteringmentioning

confidence: 99%

Methods of Gold and Silver Nanoparticles Preparation

et al. 2019

Self Cite

View full text Add to dashboard Cite

The versatile family of nanoparticles is considered to have a huge impact on the different fields of materials research, mostly nanoelectronics, catalytic chemistry and in study of cytocompatibility, targeted drug delivery and tissue engineering. Different approaches for nanoparticle preparation have been developed, not only based on “bottom up” and “top down” techniques, but also several procedures of effective nanoparticle modifications have been successfully used. This paper is focused on different techniques of nanoparticles’ preparation, with primary focus on metal nanoparticles. Dispergation methods such as laser ablation and vacuum sputtering are introduced. Condensation methods such as reduction with sodium citrate, the Brust–Schiffrin method and approaches based on ultraviolet light or biosynthesis of silver and gold are also discussed. Basic properties of colloidal solutions are described. Also a historical overview of nanoparticles are briefly introduced together with short introduction to specific properties of nanoparticles and their solutions.

show abstract

Section: Vacuum Sputteringmentioning

confidence: 99%

Methods of Gold and Silver Nanoparticles Preparation

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…Such undulation(s) in surface is suggestive toward temperature induced agglomerations (as apparent from formation of globules), that has led to opening up of SWCNTs surface to the analyte, resulting in high degree of adsorption at SWCNTs sidewalls and interstitials . Kalachyova et al have also reported such bulges in TPP films after annealing at 160 °C. Line profiles further reflected gradual decrease in average device diameter with increase in temperature.…”

Section: Resultsmentioning

confidence: 99%

Tuning Coating Thickness of Iron Tetraphenyl Porphyrin on Single Walled Carbon Nanotubes by Annealing: Effect on Benzene Sensing Performance

Rushi¹,

Datta

Ghosh³

et al. 2018

Phys. Status Solidi A

View full text Add to dashboard Cite

The influence of post functionalization annealing in tuning the sensing properties of metalloporphyrin functionalized single walled carbon nanotubes (SWCNTs) based benzene sensors has been reported. Aligned SWCNTs framework is non‐covalently functionalized by iron tetraphenyl porphyrin (FeTPP), followed by a systematic investigation of the annealing effect(s) on the functionalized structures. Structural (field emission scanning electron microscopy, atomic force microscopy), electrical (current–voltage, chemFET characteristics), spectroscopic (Raman), and sensing (chemiresistive) studies reveal that optimal annealing conditions lead to the efficient control of coating thickness and surface microstructure of the functionalizing entity, which allows the efficient participation of both sensing components during analyte detection. Optimized sensors bearing clear synergistic effects of FeTPP and SWCNTs could be obtained with features suitable for real‐time monitoring of benzene that include detection window of 1 ppm–25 ppm at room temperature, sensitivity figure of 15.3% and response/recovery duration in the range of 14–31 s and 5–35 s, respectively.

show abstract

“…Sensing of mercury, in particular, is important because mercury is harmful to both human health and the environment, as it is highly soluble in water and even at low concentrations is known to adversely affect the endocrine, nervous and excretory systems [ 96 ]. Furthermore, existing detection methods are time consuming and require sophisticated instruments [ 97 – 99 ]. The platform developed by Wu et al .…”

Section: Quantitative Luminescence-based Sensingmentioning

confidence: 99%

Metal-organic frameworks as biosensors for luminescence-based detection and imaging

et al. 2016

View full text Add to dashboard Cite

Metal-organic frameworks (MOFs), formed by the self-assembly of metal centres or clusters and organic linkers, possess many key structural and chemical features that have enabled them to be used in sensing platforms for a variety of environmentally, chemically and biomedically relevant compounds. In particular, their high porosity, large surface area, tuneable chemical composition, high degree of crystallinity, and potential for post-synthetic modification for molecular recognition make MOFs promising candidates for biosensing applications. In this review, we separate our discussion of MOF biosensors into two categories: quantitative sensing, focusing specifically on luminescence-based sensors for the direct measurement of a specific analyte, and qualitative sensing, where we describe MOFs used for fluorescence microscopy and as magnetic resonance imaging contrast agents. We highlight several key publications in each of these areas, concluding that MOFs present an exciting, versatile new platform for biosensing applications and imaging, and we expect to see their usage grow as the field progresses.

show abstract

Surface morphology and optical properties of porphyrin/Au and Au/porphyrin/Au systems

Cited by 16 publications

References 56 publications

Methods of Gold and Silver Nanoparticles Preparation

Methods of Gold and Silver Nanoparticles Preparation

Tuning Coating Thickness of Iron Tetraphenyl Porphyrin on Single Walled Carbon Nanotubes by Annealing: Effect on Benzene Sensing Performance

Metal-organic frameworks as biosensors for luminescence-based detection and imaging

Contact Info

Product

Resources

About