Joanna Ortyl

Joanna Ortyl
Cracow University of Technology | PK · Faculty of Chemical Engineering and Technology

Professor
A fundamental understanding of the interplay between light and matter in photo-initiating systems to guide 3D printing.

About

83
Publications
21,766
Reads
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981
Citations
Citations since 2016
59 Research Items
926 Citations
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
Introduction
Research Areas (1) Novel photoinitiators and accelerators for polymerization and photopolymerization processes; (2) 3D-VAT printing processes, materials (3) Fluorescent probes for special applications – studying the properties of investigated media; (4) Application of fluorescent probes in monitoring the progress of chemical reactions, including polymerization and photopolymerization processes; (5) Intelligent luminescent molecular sensors for selective detection in biochemistry and chemistry.
Additional affiliations
March 2013 - present
Cracow University of Technology
Position
  • Professor (Assistant)
Description
  • Cracow University of Technology, Faculty of Chemical Engineering and Technology, Chair of Biotechnology and Physical Chemistry Laboratory of Applied Photochemistry
March 2013 - present
Cracow University of Technology
Position
  • Professor (Assistant)
September 2011 - March 2013
Cracow University of Technology
Position
  • Research Assistant
Description
  • Cracow University of Technology, Faculty of Chemical Engineering and Technology
Education
October 2013 - December 2013
University of California, Berkeley
Field of study
  • Haas School of Business, University of California Berkeley
October 2010 - June 2011
University of Agricultural Sciences in Krakow
Field of study
  • Project Manager and Scientific Research
October 2009 - June 2010
University of Agricultural Sciences in Cracow, Poland
Field of study
  • Instrumental analysis in assessing the quality of food

Publications

Publications (83)
Article
Full-text available
We present a group of seven new advanced symmetric iodonium salts bearing two benzylidene-based chromophores. This is the first example of the use of a double bond in the structure of a symmetric iodonium salt. Such an improvement ensures excellent absorbing properties in the UV-A and visible range, representing a significant advance over the commo...
Article
3D printing technology offers solutions for numerous needs in industry and the daily life of individuals. In recent years, most research efforts have focused on this technology as the market share has grown and requirements have become specified in their related fields. In this work, a novel visible light induced 3D printing system with high resolu...
Article
Full-text available
Three-dimensional printing in SLA (stereolithography) and DLP (digital light processing) technologies has recently been experiencing a period of extremely rapid development. This is due to the fact that researchers recognise the many advantages of 3D printing, such as the high resolution and speed of the modelling and printing processes. However, t...
Article
Full-text available
The addition of nanoparticles (NPs) into a polymer matrix represents a simple yet efficient tool for introducing or enhancing functional properties. 3D printing is a processing technique with unprecedented control over the micro- and macroscopic structure. Their combination creates a versatile fabrication tool for both professional and hobby users....
Article
Photopolymerization processes are currently one of the key methods for obtaining functional materials, and the possibility of applying this process to additive technologies opens up new opportunities, especially for the medical market. 3D-VAT printing, including techniques such as digital light processing (DLP) and stereolithography (SLA), makes it...
Poster
Full-text available
Laboratory 1
Article
A series of 2-amino-4,6-diphenyl-pyridine-3-carbonitrile (APC) derivatives has been synthesized and their applicability for the role of fluorescent molecular sensors for chemical and biochemical applications has been evaluated. It has been found that the dimethylamino-substituted APC derivatives exhibit a very high solvatochromic effect that makes...
Article
Full-text available
meta -Terphenyl derivatives were used as versatile fluorescent sensors for online monitoring of hybrid photopolymerization that allow seeing the difference between different types of polymerization processes involved in the hybrid polymerization.
Article
Full-text available
Research regarding protein-ligand interactions remains a major concern in the fields of chemistry, biochemistry, pharmacology, and food science. Herein, the interaction of selected pyridine derivatives with bovine serum albumin (BSA) was investigated using UV–Vis and fluorescence spectroscopy. A series of 2-amino-4,6-diphenyl-pyridinium-3-carbonitr...
Article
Nowadays, the lack of suitable photoinitiators (PI) and photoinitiating systems (PISs) represents the utmost challenge in 3D-VAT printing. High photoinitiating efficiency is needed for example in the presence of nanofillers such as carbon nanotubes (CNTs) which absorb and scatter light. Many prominent PISs contains iodonium salt as an initiator and...
Article
Full-text available
Herein, mono- and disubstituted thioxanthones have been synthesized and introduced as photosensitizers of iodonium salt for cationic and free-radical photopolymerization of epoxy and an acrylate monomer, respectively. Photoinitiation activity of these molecules was verified during photopolymerization processes performed upon exposure to visible LED...
Article
Deep Eutectic Monomers were prepared by dissolution of selected tetrabutylammonium salts serving as hydrogen bond acceptors (HBA) in methacrylic acid (MAA) acting both as hydrogen bond donor (HBD) and vinyl monomer. In this study, we systematically investigate the influence of chloride, nitrate, hydrogensulphate and fluoroborate anions on propertie...
Article
Full-text available
Herein, novel europium(III) complex derivatives dedicated to polymer chemistry applications as molecular sensors have been reported. The following are among them tris(4,4,4-trifluoro-1-phenylbutane-1,3-dione) europium(III) (BTA) and tris(4,4,4-trifluoro-1-(2-naphthyl)butane-1,3-dione)europium(III)] (NTA). To obtain the relevant europium complexes,...
Article
Five novel 4,6-diphenyl-2-pyrrol-1-yl-benzene-1,3-dicarbonitrile derivatives bearing the following substituents: -H, -SCH3, -OCH3, -CN, -NPh2 were synthesized and investigated as fluorescent sensors for photopolymerization processes. It was turned out, that using these compounds provide a visible and direct strategy to monitor the photopolymerizati...
Article
Full-text available
This paper describes a series of novel benzylidene scaffold-based iodonium salt one-component photoinitiators containing double bonds and dialkylamino groups synthesized in one step via classical aldol condensation reactions. Systematic investigations of structure–activity relationships were performed via quantum-chemical calculations and experimen...
Article
In order to respond to the growing demand for radiation‐curable waterborne products like hydrogels or inks, there is a need for water‐soluble radical photoinitiators exhibiting absorption in the near UV to visible range. Herein the synthesis of a novel type‐I diphenylphosphine oxide photoinitiator bearing a 2,6‐dimethyl‐4‐dimethylaminobenzoyl group...
Article
Photopolymerization is an environmentally-friendly, non-destructive, safe and solvent-free method. Moreover it guarantees low energy consumption. Therefore the photopolymerization is used in many scientific disciplines, including dentistry for production photocurable dental materials. In this work, the new photoinitiating systems based on camphoroq...
Article
Full-text available
New meta- and para-cyanoderivatives of 1,4-di(styryl)benzene and 1,3-di(styryl)benzene were synthesized and investigated for their use as photosensitizers of iodonium salt for various photopolymerization processes. Detail spectroscopic characteristic of this compound were performed, and the mechanism of initiation in binary photoinitiating system t...
Article
Full-text available
Herein, novel 1H-quinolin-2-ones derivatives dedicated to polymer chemistry have been reported. Essential spectroscopic studies including absorbance, fluorescence emission and excitation spectra were carried out. Subsequently, a number of studies on the suitability of new compounds for the role of fluorescent molecular probes using Fluorescence Pro...
Article
Full-text available
In recent years, there has been growing interest in photo-mediated processes. Herein, this review aims to give a summary concerning photoinduced processes in which pyrylium salts are involved. Synthetic methods leading to obtaining pyrylium salts are presented as well as properties of these compounds are described in detail. The second part of the...
Article
A semi-empirical equation describing the response of Solvent-Quenched Pressure Sensitive Paints (SQ-PSP) to pressure has been derived on the basis of phenomenological and thermodynamic considerations. Next, a method for determination of the coefficients present in the equation was proposed and fidelity of the predictions based on the equation was v...
Article
Full-text available
The present article demonstrates selective cytotoxicity against cancer cells of the complexes [Co(L D)2]I2•CH3OH (1), [CoL D (NCS)2] (2) and [VOL D (NCS)2]•C6H5CH3 (3) containing the dip-odal tridentate ligand LD = N,N-bis(3,5-dimethylpyrazol-1-ylmethyl)amine), formed in situ. All tested complexes expressed greater anticancer activities and were le...
Article
Herein, a novel fluorescent method for the determination of GSH levels in aqueous solutions involving the utilization of citric acid as a derivatization reagent was developed. Therefore, crucial parameters of the derivatization process were established what has resulted in the development of sensitive, reproducible, and accurate GSH assay. The meth...
Article
Full-text available
In recent years, frontal polymerisation has found a growing interest in many applications. Thus, its ability to cure thick samples with different fillers up to 50% by local application of...
Article
Herein, new iodonium salts based on 4,4-difluoro-1,3,5,7,8-pentamethyl-4-bora-3a,4a-diaza-s-indecene (B-1) chromophore has been introduced to 3D printing applications. Iodonium salts with different anions such as tosylate, hexafluorophosphate, hexafluoroantimonate, and triflate absorbing in...
Article
Full-text available
Herein, the generation of decarboxylated derivatives of gomphrenin pigments exhibiting potential health-promoting properties and the kinetics of their extraction during tea brewing from the purple flowers of Gomphrena globosa L. in aqueous and aqueous citric acid solutions were investigated. Time-dependent concentration monitoring of natural gomphr...
Article
Full-text available
The photoinduced polymerization of monomers is currently an essential tool in various industries. The photopolymerization process plays an increasingly important role in biomedical applications. It is especially used in the production of dental composites. It also exhibits unique properties, such as a short time of polymerization of composites (up...
Article
Full-text available
A series of 2-(diethylamino)-4-(1-ethylpropyl)-6-phenyl-benzene-1,3-dicarbonitrile derivatives were investigated in terms of photosensitisation in various photopolymerization processes in UV-A and vis light conditions. A full spectroscopic analysis of the tested compounds was performed. In addition to excellent spectroscopic properties, these compo...
Article
Full-text available
In the present paper, novel thioxanthone-based compounds were synthesised and evaluated as a component of photoredox catalysts/photoinitiating systems for the free-radical polymerisation (FRP) of acrylates and the ring-opening cationic polymerisation (CP) of epoxy monomers. The performance of the obtained thioxanthones in two- and three-component p...
Article
This paper describes the development of four new coumarin chromophore-based iodonium salts as efficient one-component cationic photoinitiators upon light-emitting diode irradiations (LEDs) with maximum emission under the UV-A region at...
Article
Full-text available
The following article introduces technologies that build three dimensional (3D) objects by adding layer-upon-layer of material, also called additive manufacturing technologies. Furthermore, most important features supporting the conscious choice of 3D printing methods for applications in micro and nanomanufacturing are covered. The micromanufacturi...
Article
Full-text available
This article is a literature review on those compounds that act as photoinitiators of photopolymerization processes in biomedical applications.
Article
This work demonstrates a new versatile, efficient photoinitiating system based on 2-amino-4-phenyl-6-(4-phenylphenyl)benzene-1,3-dicarbonitrile and 2-amino-4-phenyl-6-[4-[(E)-styryl]phenyl]benzene-1,3-dicarbonitrile derivatives as photosensitisers of iodonium and thianthrenium salts for photopolymerization under visible low light intensity with...
Article
Full-text available
Novel fluorescent sensors with electron-donating or electron-withdrawing substituents incorporated into a chromophore group based on 2,6-diphenylpyridine were designed and synthesised. The spectroscopic properties of these compounds were studied. Moreover, the positive solvatochromism of 2,6-bis-(4-methylsulphanylphenyl)pyridine (PT-SCH3) in select...
Article
Full-text available
Light-initiated polymerization processes are currently an important tool in various industrial fields. The advancement of technology has resulted in the use of photopolymerization in various biomedical applications, such as the production of 3D hydrogel structures, the encapsulation of cells, and in drug delivery systems. The use of photopolymeriza...
Article
Full-text available
In this work, we presented a new bimolecular photoinitiating system based on 2-amino-4,6-diphenylpyridine-3-carbonitrile derivatives as visible photosensitizers of diphenyliodonium salt. Real-time FTIR and photo-DSC photopolymerization experiments with a cycloaliphatic epoxide and vinyl monomers showed surprisingly good reactivity of the bimolecula...
Article
Full-text available
1-Amino-4-methyl-naphthalene-2-carbonitrile derivatives are proposed for the role of photosensitizers of iodonium salt during the photopolymerization processes upon near UV-A and visible ranges. Remarkably, 1-amino-4-methyl-naphthalene-2-carbonitrile derivatives are highly versatile allowing access to photoinitiating systems for (i) the cationic ph...
Article
The new 2-(diethylamino)-4,6-diphenyl-benzene-1,3-dicarbonitrile derivatives were synthesized and proposed as high performance photoinitiators in conjunction with iodonium salt for: i) cationic polymerization of epoxides, ii) free-radical polymerization of acrylates, iii) the synthesis of interpenetrating polymer networks (IPNs) from acrylate/epoxy...
Article
Abstract An apparatus for measuring the effect of pressure on luminescence characteristics of molecular sensors was designed and constructed. Next, the apparatus was applied for studies of the effect of pressure on luminescence of a series of europium(III) complexes. The following Eu(III) complexes were evaluated as potential pressure sensors for...
Article
Full-text available
The applicability of new 1,6-diphenylquinolin-2-oneas derivatives as fluorescent molecular sensors for monitoring the progress of photopolymerisation processes by Fluorescence Probe Technique (FPT) has been tested. The progress of cationic, free-radical and thiol-ene photopolymerisation for commercially available monomers: triethylene glycol diviny...
Article
Full-text available
The performance of a series of 2-amino-4,6-diphenyl-benzene-1,3-dicarbonitrile derivatives (i.e., amino-meta-terphenyls) as visible light sensitizers for diphenyliodonium salt for enabling photopolymerization at different irradiation wavelengths was studied. Structural modification of 2-amino-4,6-diphenyl-benzene-1,3-dicarbonitrile...
Article
Full-text available
Novel 2-amino-4-methyl-6-phenyl-benzene-1,3-dicarbonitrile derivatives were proposed as photosensitizes of iodonium salt for a highly effective bimolecular photoinitiating system upon soft irradiation conditions under long-wave ultraviolet (UV-A) and visible light. Remarkably, these structures are highly versatile, allowing access to photoinitiatin...
Conference Paper
Fluorescent molecular probes become interesting analytical tools in determination and labeling of chemical compounds and physical properties such as viscosity and polarity. Currently known fluorescent molecular probes can selectively and regardless of the environment detect only few molecules, and applicability in determination of micro- viscosity...
Article
Full-text available
The performance of a series of 2-amino-4,6-diphenyl-pyridine-3-carbonitrile derivatives as fluorescent molecular sensors for monitoring photopolymerization processes of different monomers by the Fluorescence Probe Technique (FPT) was studied. It has been shown that the new derivatives are characterized by much higher sensitivity than the commercial...
Article
Applicability of a series of coumarin derivatives as fluorescent probes for monitoring progress of cationic photopolymerization processes by Fluorescence Probe Technique (FPT) has been studied using triethylene glycol divinyl ether as a model monomer and diphenyliodonium hexafluorophospate as a cationic photoinitiator. The following coumarins were...
Article
Applicability of 15 trivalent samarium complexes as novel luminescent probes for monitoring progress of photopolymerization processes or thickness of polymer coatings by the Fluorescence Probe Technique (FPT) was studied. Three groups of samarium(III) complexes were evaluated in cationic photopolymerization of triethylene glycol divinyl ether monom...
Article
A method for determination of relative initiation efficiency of free-radical photoinitiators directly in monomers by Fluorescence Probe Technique (FPT) has been expanded into cationic photoinitiators and the use of LEDs instead of monochromatic light sources. The relative initiation efficiency of a series of cationic photoinitiators relative to dip...
Chapter
General interest in the use of cationic photopolymerization instead of free-radical photopolymerization for preparation of polymer coatings is still growing. This generates the need for better understanding of the subtle nuances of this method and the need for development of new, more efficient one-component cationic photoinitiators, because the ph...
Article
Full-text available
Molecular chemical sensor, especially optical luminescent sensor, technologies are a rapidly growing topic in science and product design, embracing development in chemistry, biochemistry and life science research. [...]
Article
Photopolymerization of the hybrid monomers: 3,4-epoxycyclohexylmethyl methacrylate (Cyclomer M100) and 2-(2-vinyloxyethoxy)ethyl acrylate (VEEA) was studied by Fluorescence Probe Technique (FPT). Kinetics of cationic and free-radical photopolymerization of the hybrid monomers in the presence of the same molar concentration of various photoinitiator...
Article
Full-text available
1,3-Bis(p-bromophenylamino)squaraine which functions as an electron-transfer photosensitizer for a wide range of diphenyliodonium salts radical photoinitiators of triacrylate polymerization under UV-blue light irradiation is presented. The functionality of the photosensitizer is determined by the presence of a suitable co-initiator. For this purpos...
Article
2-Ethyl-2-(hydroxymethyl)-1,3-propanediol triacrylate was polymerized in the presence of squarylium dye and various onium salts. The onium salts under study are commercially available or may be easy synthesized and are characterized by light absorption properties below 300 nm and generate phenyl radicals upon blue light exposure. Due to these inter...
Article
The effect of an electron-donating and an electron-withdrawing substituent at 4-position and selected electron-donating substituents at the 7-position of coumarin structure on its ability to monitor free radical photopolymerization of diethylene glycol dimethacrylate by the Fluorescence Probe Technique (FPT) has been evaluated. It was found that th...
Article
In the present paper, new photoinitiators based on the meta-terphenyl scaffold in combination with an iodonium salt and 9H-carbazole-9-ethanol (CARET) are proposed for the free radical promoted cationic polymerization of epoxides upon visible light exposure using light emitting diodes at 405, 455, and 470 nm. Remarkably, a new high performance addi...
Article
The performance of a series of 1-amino-2,6-dicyano-3,5-diphenylbenzene derivatives (i.e., meta-terphenyls) as fluorescent molecular probes for monitoring cationic photopolymerization of monomers by the Fluorescence Probe Technique (FPT) was studied. It was found that the m-terphenyls accelerate the cationic photopolymerization initiated with diphen...
Article
Two iodonium salts based on a coumarin chromophore are investigated for polymerization upon light emitting diode irradiations (LEDs). They work as one-component photoinitiators. They initiate the cationic polymerization of epoxides (under air) and vinylethers (laminate) upon exposure to violet LEDs (385 and 405 nm). Excellent polymerization profile...