TY - GEN
T1 - Unveiling excited-state chirality of binaphthols by sub-picosecond circular dichroism and quantum-chemical calculations
AU - Changenet, P.
AU - Hache, F.
N1 - Publisher Copyright:
© 2020 SPIE.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - Time-resolved circular dichroism (TR-CD) is a powerful tool for probing the conformational dynamics of molecules over large time-scales. By using Binaphthol and two bridged derivatives (PL1 and PL2) as chiral prototypes, we present the first comprehensive study of this type in the middle UV, combining femtosecond TR-CD and quantum mechanical calculations (TD-DFT). We show that excitation of the three compounds induces large variations of their transient CD signals, in sharp contrast to those of their achiral transient absorption, which arise both from the alteration of the electronic distribution and the change of the dihedral angle in the excited state.
AB - Time-resolved circular dichroism (TR-CD) is a powerful tool for probing the conformational dynamics of molecules over large time-scales. By using Binaphthol and two bridged derivatives (PL1 and PL2) as chiral prototypes, we present the first comprehensive study of this type in the middle UV, combining femtosecond TR-CD and quantum mechanical calculations (TD-DFT). We show that excitation of the three compounds induces large variations of their transient CD signals, in sharp contrast to those of their achiral transient absorption, which arise both from the alteration of the electronic distribution and the change of the dihedral angle in the excited state.
KW - Binaphthol derivative
KW - Quantum calculations
KW - Time-resolved circular dichroism
UR - https://www.scopus.com/pages/publications/85083756101
U2 - 10.1117/12.2539823
DO - 10.1117/12.2539823
M3 - Conference contribution
AN - SCOPUS:85083756101
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Organic Photonic Materials and Devices XXII
A2 - Tabor, Christopher E.
A2 - Kajzar, Francois
A2 - Kaino, Toshikuni
PB - SPIE
T2 - Organic Photonic Materials and Devices XXII 2020
Y2 - 5 February 2020 through 6 February 2020
ER -