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Information × Registration Number 0226U002625, (0124U001443) , R & D reports Title Bistable compounds for adaptive masking, energy-saving "green" technologies and molecular electronics popup.stage_title Дослідження фізико-хімічних властивостей бістабільних сполук. Head Seredyuk Maksym L., Доктор хімічних наук Registration Date 02-03-2026 Organization Taras Shevchenko National University of Kyiv popup.description1 The goal of the project is to select and modify ligand systems based on available libraries of organic synthons, taking into account potential changes in the molecular periphery; synthesis of transition metal compounds based on N,O-polydentate ligands with a given type of supramolecular interactions that will provide controlled spin-crossover, spectral and color characteristics of compounds in combination with high chemical stability and high entropy gain; study of their magnetic and spectral properties; elucidation of the structure-property relationship for metal complexes and development of scientifically sound approaches to create a new generation of bistable functional compounds. popup.description2 The project aims to design, synthesise, and investigate transition metal complexes with N,O-polydentate ligands exhibiting controlled supramolecular interactions and enhanced bistable behaviour. Ligand systems will be selected and modified using extensive libraries of organic synthons, with particular attention to variations in the molecular periphery. The targeted compounds are expected to combine high chemical stability, significant spin transition entropy, and tunable magnetic and spectral properties. A key objective is to establish reliable structure–property correlations to enable the rational development of next-generation bistable functional materials. Given the possibilities of modern organic and combinatorial chemistry, clear criteria for ligand selection will be formulated. A comprehensive approach will consider geometry, basicity, steric parameters, electron density distribution, ligand field strength, potential intermolecular interactions, and synthetic accessibility. Synthetic strategies include the introduction of aliphatic and fluorinated substituents to increase spin transition entropy, minimisation of hydrogen content to enhance cooperativity, and incorporation of charge-stabilising functions. Retrosynthetic platforms, click chemistry, cross-coupling, and condensation reactions will be employed. The novelty of the approach lies in the use of a super-large library of synthons with targeted ligand selection to obtain metal complexes with predictable properties. The influence of the nature and type of supramolecular interactions on macroscopic characteristics will be clarified, and the effect of nanoscale and barocaloric properties of systems with optimised ligands will be investigated. The project is based on the hypothesis of the dominant role of peripheral groups in the formation of structure-dependent and functional characteristics, which opens up the possibility of controlled design of bistable metal-containing materials. Product Description popup.authors Yurii S. Moroz Nataliia S. Kariaka Serhii O. Malinkin Mariia B. Struhatska popup.nrat_date 2026-03-02 Close