Academician Jordan Malinowski was born on 03.06.1923 ...
Acad. J. Malinowski (1923 - 1996)
Academician Jordan Malinowski was born on 03.06.1923 in Sliven, Bulgaria. He studied in the American college in Sofia and after graduation in 1943, he took part in the World War II and was awarded a medal. In 1948 he graduated the Faculty of mathematics and physics with specialty “Chemistry” in Sofia State University “Kl. Ohridski” and worked as a research associate in the field of physical chemistry. From 1948 up to 1958 he was a research associate in the Institute of Physics to the Bulgarian Academy of Sciences (BAS). He got his PhD degree in chemistry in 1958 and his Doctor of Science degree in 1969. In 1959 he was elected for an associated professor, and in 1964 – for professor in the Institute of physical chemistry to BAS. In 1989 he was elected for an academician of BAS. He was a founder of the Central laboratory of photoprocesses to BAS (1967) being its director up to 1992, when it was elected for the President of BAS. He remained on this high position till the end of his life in 1996.
Academician Jordan Malinowski began his scientific activity in the field of electro-crystallization under the guidance of academician Rostislav Kaishev. As a research associate in the Institute of Physics to BAS, he obtained substantial results on physical formation of photo-emulsions. He developed a method for differential development which permitted creation of photo-materials with new improved characteristics and which had been applied by many photographic firms. A special place in his scientific activity took simulations of the mechanism of the elementary photo-process for mono-crystals of silver bromide. For this purpose a method was developed for direct synthesis of mono-crystals from super-pure silver halides, which is still widely used all over the world for synthesis of compounds of high purity that are sensitive to light and other radiations.
Further in his career, the interests of academician Jordan Malinowski were focused on study of formation of the “latent image” - an invisible image, formed at illumination of the photo-sensitive material, which is visualized by means of physical and chemical development. The obtained unique results proved the important role of the so called photo-holes in the photoinduced changes in silver halides. These results were in the base of a new theory, which became wellknown in the international scientific literature as a “symmetric scheme of Malinowski”. It takes in account both electrons and photo-holes. It has been established by modeling that one of the rather complicated and unclear processes – action of the developer which distinguishes the exposed from the non-exposed parts of the photo-material – is a special case of the theory of crystal growth. The systematic research made possible clarification of the photographic process also in others photo-sensitive materials, including non-silver compounds. Advanced technologies for photomaterials production have been developed on the basis of highly effective completely dry approach for deposition of silver and non-silver light-sensitive substances by evaporation in vacuum. Practical implementation of the pioneer achievements of academician Jordan Malinowski made possible organization of a new for Bulgaria high-tech field – production of photo-raster transducers.
Academician Jordan Malinowski was widely recognized all over the world. He was an honorable member of the Royal society of the United Kingdom, of American and Japanese societies for photographic science and technique, of European academy of sciences, art and literature, of Academy of Valonia in Belgium etc. He was awarded numerious national and international awards as the medal of the German academy for natural sciences, Lieven-Gevaert Medal – the most prestigious award of American society for photographic science and technique, award for the best paper of the year of the American journal for photographic science and technique (2 times); Dimitrov award; decorations “Republic Bulgaria” – ІІІ degree, “Cyrill and Methodius” – ІІ degree, medal “1300 anniversary of Bulgaria”, medal “100 years BAS” etc. Many years he was a member of the International committee for photographic science and editor in prestigious international journals. As an outstanding scientist he was invited to deliver keynote lectures at all international conferences in the field of photographic processes.
As a president of BAS academician Jordan Malinowski fruitfully worked for reforming the Academy. He made a lot of efforts to keep the leading position of BAS in the scientific community of Bulgaria and Bulgarian society. Doctor's thesis of Acad. J. Malinowski (in Bulgarian, .pdf)
Most significant applied scientific achievement for 2020
Zinc and its critical role in the development of Retinitis pigmentosa: Conclusions based on DFT / SMD calculations, coordinator Assoc. Prof. Dr. Silvia Angelova The achievement is in the field of theoretical and computational chemistry. The results shed light on some aspects of human vision related to the biochemistry of zinc and its role in...
Most significant applied scientific achievement for 2020
Zinc and its critical role in the development of Retinitis pigmentosa: Conclusions based on DFT / SMD calculations, coordinator Assoc. Prof. Dr. Silvia Angelova
Structure of rhodopsin according to X-ray structural analysis data (1u19). The two centers studied were designated as "His100" and "His195" because these are the residues where the observed mutations occur, namely the replacement of histidine with phenylalanine ("His100") or phenylalanine and lysine ("His195").
The achievement is in the field of theoretical and computational chemistry. The results shed light on some aspects of human vision related to the biochemistry of zinc and its role in the development of Retinitis pigmentosa. The most important receptor in the human eye is rhodopsin. Experimental results show that the loss of thermostability of rhodopsin protein is due to a combination of mutations typical of the disease and increased amounts of Zn2 +. From a thermodynamic point of view, it is particularly interesting to understand the reasons for the observed result, as well as to characterize in detail the interactions between the "native" cation and the amino acid residues that make up the studied centers. The following questions were answered by the methods of computational chemistry: (1) what is the preferred geometry of Zn2 + - containing complexes with amino acid ligands from the binding pockets; (2) what is the role of mutations for the interaction between Zn2 + and the studied centers; (3) can other divalent cations such as Ca2 + and Cu2 + replace native zinc; (4) how does the polarity of the medium affect the course of the processes? The competition between native zinc and calcium and copper was also studied, and the obtained results were compared with experimental data known in the literature. The study is a project of Nikoleta Kircheva, part of the National Research Program "Young Scientists and Postdoctoral Fellows", funded by the Ministry of Education and Science with CMD 577/2018 of 271/2019 The results were published in the journal Inorganic Chemistry of category Q1 with impact factor 4.85: Kircheva, N .; Dobrev, S .; Nikolova, V.; Angelova, S.; Dudev, T .: Zinc and its Critical Role in Retinitis Pigmentosa: Insights from DFT / SMD Calculations; Inorg. Chem. 2020, 59, 17347−17355.
White organic light emitting diodes based on newly synthesized organometallic complex Iridium (III) bis [2-phenylbenzo [d] thiazolato-N, C2 '] - quinolin-8-olate (bt) 2Irq, coordinator Assoc. Prof. Dr. Reni Tomova The achievement is in the field of synthesis of a new organometallic complex of iridium (bt) 2Irq), emitting yellow-orange light. Its photophysical, electrochemical and electroluminescent...
Most significant scientific achievement for 2020
White organic light emitting diodes based on newly synthesized organometallic complex Iridium (III) bis [2-phenylbenzo [d] thiazolato-N, C2 '] - quinolin-8-olate (bt) 2Irq, coordinator Assoc. Prof. Dr. Reni Tomova
Structure, CIE diagrams and photos of OLED devices with subsidized: EL (left) and HTL (right) layer
The achievement is in the field of synthesis of a new organometallic complex of iridium (bt) 2Irq), emitting yellow-orange light. Its photophysical, electrochemical and electroluminescent properties have been studied for application in the production of white organic light emitting diodes (WOLED). The complex, in suitable combination with other organic compounds emitting in the blue and green area. has been used successfully in the manufacture of WOLED. For this purpose, it is imported as a subsidizing substance in the matrices of the electroluminescent (a) or positive charge transport layers of OLED devices (c) in concentrations from 0 to 16.5 wt%. It has been found that both types of devices demonstrate good current efficiency and are characterized by color coordinates (CIE) close to those of ideal white light for a wide range of dopant concentrations. They work on the basis of the charge trapping mechanism. The results of the study were published in the journal of category Q2 with impact factor 2.185: Ivanov, P., Petrova, P., Tomova, R .. Investigation of photophysical, electrochemical and Electroluminescent properties of Iridium (III) bis [2-phenylbenzo [ d] thiazolato-N, C2 ′] - quinolin-8-olate for white organic light-emitting diodes application. Journal of Materials Science: Materials in Electronics, 31, 18, Springer Nature, 2020
The Institute of Optical Materials and Technologies (IOMT) “Academician Jordan Malinowski” has been established on July 1, 2010 by merging two research units: The Central Laboratory of Photo-processes and The Central Laboratory of Optical Recording and Processing of Information. The main research goals of the institute are: ⁕ Investigation of ...
The Institute of Optical Materials and Technologies (IOMT) “Academician Jordan Malinowski” has been established on July 1, 2010 by merging two research units: The Central Laboratory of Photo-processes and The Central Laboratory of Optical Recording and Processing of Information. The main research goals of the institute are: ⁕ Investigation of photo-induced processes in micro- and nano-sized layers and structures and to develop high-technology novel materials and methods for optical applications in flexible transparent electronics, ecology, biomedicine, food industry, non-destructive testing and cultural heritage protection; ⁕ Training of highly qualified personnel in these areas. Training of graduates and postgraduates; ⁕ Carrying out interdisciplinary research and joint projects with experts from other research units; ⁕ Implementation of the scientific product through innovation and knowledge transfer to industry.◊