TY - JOUR
T1 - Highly Emissive, Optically Active Poly(diphenylacetylene) Having a Bulky Chiral Side Group
AU - Kim, Hyojin
AU - Seo, Kyo Un
AU - Jin, Young Jae
AU - Lee, Chang Lyoul
AU - Teraguchi, Masahiro
AU - Kaneko, Takashi
AU - Aoki, Toshiki
AU - Kwak, Giseop
N1 - Publisher Copyright:
© 2016 American Chemical Society.
PY - 2016/5/17
Y1 - 2016/5/17
N2 - A highly emissive, optically active poly(diphenylacetylene) derivative, NpSi∗-PDPA, was synthesized by introducing a bulky chiral pendant group into the polymer chain. NpSi∗-PDPA exists in a glassy state having a highly disordered and amorphous structure. Hence, the fractional free volume is quite high, i.e., 0.29. NpSi∗-PDPA emits a green light in solution and a yellow light in film. This polymer is quite emissive, as the photoluminescence (PL) quantum yield is 56.1% in solution and 6.2% in film, and the PL lifetime is relatively long, 1.71 ns in solution and 1.05 ns in film. NpSi∗-PDPA shows the strongest circular dichroism (CD) signal at 384 nm, with a magnitude of circular polarization (gCD) of 0.90 × 10-3 and an optical rotation of 110° (4.30 × 10-3 g mL-1, in CHCl3). The CD intensity is significantly increased by annealing at 80 °C, reaching an equilibrium at gCD of 7.10 × 10-3 after 72 h.
AB - A highly emissive, optically active poly(diphenylacetylene) derivative, NpSi∗-PDPA, was synthesized by introducing a bulky chiral pendant group into the polymer chain. NpSi∗-PDPA exists in a glassy state having a highly disordered and amorphous structure. Hence, the fractional free volume is quite high, i.e., 0.29. NpSi∗-PDPA emits a green light in solution and a yellow light in film. This polymer is quite emissive, as the photoluminescence (PL) quantum yield is 56.1% in solution and 6.2% in film, and the PL lifetime is relatively long, 1.71 ns in solution and 1.05 ns in film. NpSi∗-PDPA shows the strongest circular dichroism (CD) signal at 384 nm, with a magnitude of circular polarization (gCD) of 0.90 × 10-3 and an optical rotation of 110° (4.30 × 10-3 g mL-1, in CHCl3). The CD intensity is significantly increased by annealing at 80 °C, reaching an equilibrium at gCD of 7.10 × 10-3 after 72 h.
UR - http://www.scopus.com/inward/record.url?scp=84969857854&partnerID=8YFLogxK
U2 - 10.1021/acsmacrolett.6b00184
DO - 10.1021/acsmacrolett.6b00184
M3 - Article
AN - SCOPUS:84969857854
SN - 2161-1653
VL - 5
SP - 622
EP - 625
JO - ACS Macro Letters
JF - ACS Macro Letters
IS - 5
ER -