Pregled bibliografske jedinice broj: 1144532
Exploring the bright side of hydrophobically driven complexation: the bitter synthesis of sweet fluorescent amphiphiles
Exploring the bright side of hydrophobically driven complexation: the bitter synthesis of sweet fluorescent amphiphiles // Adriatic NMR Conference 2021 : Book of abstracts / Bregović, Nikola ; Namjesnik, Danijel ; Novak, Predrag ; Parlov Vuković, Jelena (ur.).
Zagreb: Hrvatsko kemijsko društvo, 2021. str. 62-62 (poster, nije recenziran, sažetak, znanstveni)
CROSBI ID: 1144532 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Exploring the bright side of hydrophobically
driven complexation: the bitter synthesis of
sweet fluorescent amphiphiles
Autori
Usenik, Andrea ; Poljanić, Leon ; Radonić, Doroteja ; Pičuljan, Katarina ; Car, Željka ; Petrović Peroković, Vesna ; Požar, Josip
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Adriatic NMR Conference 2021 : Book of abstracts
/ Bregović, Nikola ; Namjesnik, Danijel ; Novak, Predrag ; Parlov Vuković, Jelena - Zagreb : Hrvatsko kemijsko društvo, 2021, 62-62
Skup
The Adriatic NMR Conference 2021
Mjesto i datum
Primošten, Hrvatska, 13.09.2021. - 15.09.2021
Vrsta sudjelovanja
Poster
Vrsta recenzije
Nije recenziran
Ključne riječi
Hydrophobic effect ; solvophobic effect ; inclusion complex ; complexation thermodynamics ; cyclodextrins ; cucurbit[7]uril ; mannoconjugates
Sažetak
Regioisomeric mannoconjugates of naphthyl alcohols were synthesized by coupling of protected mannopyranose and corresponding esters of bromoacetic acid with 1- and 2- naphthyl moieties. Their complexation and the complexation of corresponding nonfunctionalized alcohols with cyclodextrins (α-, β- and γ-) and cucurbit[7]uril was explored by means of isothermal titration calorimetry, spectrophotometry, fluorimetry and NMR spectroscopy. The complexation of 2- naphthol with cucurbit[7]uril was thermodynamically most favorable. A pronounced temperature dependence of ΔrH° and ΔrS°, resulting in an almost complete enthalpy- entropy compensation was observed for some of the examined host-guest systems. In these cases, the complexation thermodynamics was in line with the classical rationale of the hydrophobic effect at lower temperatures, and the non-classical explanation at higher ones. The results of 1H NMR titrations and ROESY experiments were in agreement with the results obtained by other experimental methods and have revealed an interesting difference in complex formation kinetics among the investigated host molecules.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
POVEZANOST RADA
Projekti:
HRZZ-IP-2019-04-9560 - Koordinacijske reakcije makrocikličkih liganada u otopini (MacroSol) (Tomišić, Vladislav, HRZZ - 2019-04) ( CroRIS)
Ustanove:
Prirodoslovno-matematički fakultet, Zagreb
Profili:
Katarina Pičuljan
(autor)
Josip Požar
(autor)
Vesna Petrović-Peroković
(autor)
Andrea Usenik
(autor)
Željka Car
(autor)