Russian Journal of Biological Physics and Chemisrty Russian Journal of Biological Physics and Chemisrty АКТУАЛЬНЫЕ ВОПРОСЫ БИОЛОГИЧЕСКОЙ ФИЗИКИ И ХИМИИ 2499-9962 54024 МОЛЕКУЛЯРНАЯ БИОФИЗИКА И ФИЗИКА БИОМОЛЕКУЛ MOLECULAR BIOPHYSICS AND PHYSICS OF BIOMOLECULES МОЛЕКУЛЯРНАЯ БИОФИЗИКА И ФИЗИКА БИОМОЛЕКУЛ INTERRELATION OF ENTROPIC CONTRIBUTORS TO Π-STACKING IN SOLUTION INTERRELATION OF ENTROPIC CONTRIBUTORS TO Π-STACKING IN SOLUTION Starodub M A Starodub M A Lantushenko A O Lantushenko A O Evstigneev V P Evstigneev V P Golovchenko I V Golovchenko I V Mosunov A A Mosunov A A Evstigneev M P Evstigneev M P max_evstigneev@mail.ru Sevastopol State University ru Sevastopol State University ru Sevastopol State University ru Sevastopol State University ru Sevastopol State University ru Sevastopol State University ru Sevastopol State University ru Sevastopol State University ru Sevastopol State University ru Sevastopol State University ru Sevastopol State University; Belgorod State University ru Sevastopol State University; Belgorod State University ru 25 06 2016 25 06 2016 1 1 183 187 20 06 2016 20 06 2016 https://rusjbpc.ru/en/nauka/article/54024/view

The recently published most complete set of thermodynamical data on self- and hetero-complexation of aromatic molecules measured under comparable conditions of experiment was analysed with an aim of getting insight into contribution of various entropic factors to π-stacking in aqueous solution. It was found that the experimental entropy change on π-stacking is determined by counterbalancing effect of two principal factors, viz . the hydrophobic interaction (positive contribution) and the loss of degrees of freedom (negative contribution), modulated by electrostatic contribution. The mixing entropy contribution originating from the overall ordering of system due to π-stacking complexation is zero.

The recently published most complete set of thermodynamical data on self- and hetero-complexation of aromatic molecules measured under comparable conditions of experiment was analysed with an aim of getting insight into contribution of various entropic factors to π-stacking in aqueous solution. It was found that the experimental entropy change on π-stacking is determined by counterbalancing effect of two principal factors, viz . the hydrophobic interaction (positive contribution) and the loss of degrees of freedom (negative contribution), modulated by electrostatic contribution. The mixing entropy contribution originating from the overall ordering of system due to π-stacking complexation is zero.

 self-assembly hetero-complexation mixing entropy entropic contribution self-assembly hetero-complexation mixing entropy entropic contribution

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