TY - JOUR
T1 - Twist-gram-boundary structure in the B4 phase of a bent-core molecular system identified by second harmonic generation circular dichroism measurement
AU - Araoka, Fumito
AU - Ha, N. Y.
AU - Kinoshita, Yoshitaka
AU - Park, Byougchoo
AU - Wu, J. W.
AU - Takezoe, Hideo
PY - 2005/4/8
Y1 - 2005/4/8
N2 - Second harmonic generation circular dichroism (SHG CD) measurements are performed on the B4 phase of a bent-core molecular system. Numerical analysis of SHG CD incorporating magnetic-dipole as well as electric-dipole interaction shows that the B4 phase is in a twist-grain-boundary structure with the helical axis along the bent direction of the molecules. The result is extremely important in the sense that achiral molecules are spontaneously optically resolved, i.e., deracemization, the chiral domains of which give rise to huge chiral nonlinear optical effect.
AB - Second harmonic generation circular dichroism (SHG CD) measurements are performed on the B4 phase of a bent-core molecular system. Numerical analysis of SHG CD incorporating magnetic-dipole as well as electric-dipole interaction shows that the B4 phase is in a twist-grain-boundary structure with the helical axis along the bent direction of the molecules. The result is extremely important in the sense that achiral molecules are spontaneously optically resolved, i.e., deracemization, the chiral domains of which give rise to huge chiral nonlinear optical effect.
UR - http://www.scopus.com/inward/record.url?scp=18144390604&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.94.137801
DO - 10.1103/PhysRevLett.94.137801
M3 - Article
AN - SCOPUS:18144390604
SN - 0031-9007
VL - 94
JO - Physical Review Letters
JF - Physical Review Letters
IS - 13
M1 - 137801
ER -