Počet záznamů: 1
Intense Chiroptical Switching in a Dicationic Helicene-Like Derivative: Exploration of a Viologen-Type Redox Manifold of a Non-Racemic Helquat
- 1.0431673 - ÚOCHB 2015 RIV US eng J - Článek v odborném periodiku
Pospíšil, Lubomír - Bednárová, Lucie - Štěpánek, Petr - Slavíček, P. - Vávra, Jan - Hromadová, Magdaléna - Dlouhá, Helena - Tarábek, Ján - Teplý, Filip
Intense Chiroptical Switching in a Dicationic Helicene-Like Derivative: Exploration of a Viologen-Type Redox Manifold of a Non-Racemic Helquat.
Journal of the American Chemical Society. Roč. 136, č. 31 (2014), s. 10826-10829. ISSN 0002-7863. E-ISSN 1520-5126
Grant CEP: GA ČR GA13-19213S
Grant ostatní: GA ČR(CZ) GA13-34168S; GA MŠk(CZ) ED3.2.00/08.0144
Institucionální podpora: RVO:61388963 ; RVO:61388955
Klíčová slova: helicenoids * helquats * helical cations * ECD spectra * redox switching * chiroptical properties * helicene-viologen hybrids
Kód oboru RIV: CC - Organická chemie
Impakt faktor: 12.113, rok: 2014
Two-step redox switching in enantiopure helquat system [P-1](2+) reversible arrow [P-1](center dot) reversible arrow [P-1](0) is demonstrated. The viologen-type electroactive unit embedded directly in the helical scaffold of 1 is responsible for the prominent chiroptical switching at 264 nm. This process is associated with a marked sign-reversal of Cotton effect ramping between Delta epsilon = +35 M-1 cm(-1) for [P-1](2+) and Delta epsilon = -100 M-1 cm(-1) for [P-1](0). This helically chiral system features the most intense chiroptical switch response documented in the field of helicenoids.
Trvalý link: http://hdl.handle.net/11104/0236408
Počet záznamů: 1