PROFESSOR JACEK KOZIOŁ HAS PASSED AWAY

With deep sorrow we inform that on September 16, 2025, at the age of 76, prof. Jacek Kozioł passed away. Professor Kozioł was employed at our University from 1972 to 2004, holding numerous positions, including that of Dean of the then Faculty of Mathematics and Natural Sciences.

The funeral mass will be held on Thursday, September 25, 2025, at 1:00 p.m. in the chapel at the Municipal Cemetery in Podgórki Tynieckie, 16 Wielogórska St., after which the Deceased will be laid to rest.

The academic community of Jan Dlugosz University in Czestochowa extends its condolences to the Family and Loved Ones.
 

Prof. Kozioł authored around 50 scientific publications dedicated to nanobiochemistry, materials chemistry, and immunochemistry. His work included research on the immobilisation of drugs on iron oxide (Fe₃O₄) nanoparticles and the analysis of their physicochemical and biological properties. He published, among others, studies on the cytotoxicity of chlorambucil immobilized on Fe₃O₄, the modification of anti-inflammatory drugs (ibuprofen, diclofenac) bound to nanoparticles, and their controlled release.

An important direction of his research was the enhancement of the survival of probiotic bacteria (Lactobacillus acidophilus, L. brevis) in low-pH environments through the use of nanoparticles. His publications appeared in specialist journals in chemistry, biotechnology, and pharmacy, all sharing the common goal of developing modern nanotechnology solutions for medicine and biotechnology.

Organic and bioorganic chemistry
In the early stages of his career, Prof. Kozioł studied the structure and reactivity of organic compounds, with a particular focus on purine and pyrimidine derivatives – the fundamental components of nucleic acids. He analysed nucleoside modifications and their potential biological significance, including their possible use as analogs of anticancer or antiviral drugs.
 
Chemistry of biologically active molecules
Later, he developed research on bioactive organic compounds – examining how changes in chemical structure could influence biological activity. During this period, he was also interested in chemical interactions within biological systems and in methods of stabilising and modifying biomolecules, which formed a bridge to subsequent stages of his work.
 
Immobilisation of biomolecules and chemical carriers
The next step involved searching for methods to bind enzymes, drugs, and other biologically active substances with chemical carriers. These studies were pioneering in relation to later work on nanocarriers – even then, the idea of controlled delivery of substances into the body and improving their stability began to emerge.
 
Nanobiochemistry and nanomaterials
Building on his earlier experience, Prof. Kozioł turned to nanotechnology. He focused on iron oxide (Fe₃O₄) nanoparticles, investigating their physicochemical properties and potential practical applications. He developed methods for immobilising cytotoxic and anti-inflammatory drugs, studied controlled release of active substances, and analysed the interactions of nanoparticles with probiotic bacteria, paving the way for their use in pharmacy, biotechnology, and medicine.
 
The scientific path of Prof. Jacek Juliusz Kozioł led from classical bioorganic chemistry (research on nucleosides and bioactive organic compounds), through experiments with biomolecule immobilisation, to modern nanobiochemistry and the use of nanoparticles in medicine. His achievements reflect the evolution from fundamental to applied research, always with the aim of implementing results in health and biotechnology.