Chapter 16
Circularly Polarized Luminescence
from Solid-State Chiral Luminophores
Yoshitane Imai
Abstract Solid-state chiral organic luminophores bearing various functionalities
have been successfully developed. These chiral luminophores can emit circularly
polarized luminescence (CPL) when wrapped with organic polymer films or inorganic crystal pellet in the solid state. The chiroptical properties of these chiral
luminophores in the solid state and solution state are different. In the solid state,
a precise chiral arrangement of the fluorescent units in the luminescent molecule
generates characteristic CPL that is not observed in the solution state.
Keywords Chiral · Circular dichroism (CD) · Circularly polarized luminescence
(CPL) · Fluorescence · Luminophore
16.1 Introduction
Organic molecules with chiroptical properties have attracted attention for the development of new functional organic compounds. The chiroptical properties of chiral
organic compounds in their solid state are particularly important in the development of new optoelectronic materials. Specifically, circularly polarized luminescence
(CPL) from chiral organic luminophores in their solid state has recently attracted
significant attention in the field of optoelectronics for applications such as polarized
3D systems and security systems. [1–10]
In this chapter, the characteristic properties of solid-state CPL of the chiral organic
luminophores are introduced. This will help in designing new solid-state circularly
polarized luminophores.
Y. Imai (B)
Kindai University, Osaka, Japan
e-mail: y-imai@apch.kindai.ac.jp
© Springer Nature Singapore Pte Ltd. 2020
M. Sakamoto and H. Uekusa (eds.), Advances in Organic Crystal Chemistry,
https://doi.org/10.1007/978-981-15-5085-0_16
325
Circularly Polarized Luminescence
from Solid-State Chiral Luminophores
Yoshitane Imai
Abstract Solid-state chiral organic luminophores bearing various functionalities
have been successfully developed. These chiral luminophores can emit circularly
polarized luminescence (CPL) when wrapped with organic polymer films or inorganic crystal pellet in the solid state. The chiroptical properties of these chiral
luminophores in the solid state and solution state are different. In the solid state,
a precise chiral arrangement of the fluorescent units in the luminescent molecule
generates characteristic CPL that is not observed in the solution state.
Keywords Chiral · Circular dichroism (CD) · Circularly polarized luminescence
(CPL) · Fluorescence · Luminophore
16.1 Introduction
Organic molecules with chiroptical properties have attracted attention for the development of new functional organic compounds. The chiroptical properties of chiral
organic compounds in their solid state are particularly important in the development of new optoelectronic materials. Specifically, circularly polarized luminescence
(CPL) from chiral organic luminophores in their solid state has recently attracted
significant attention in the field of optoelectronics for applications such as polarized
3D systems and security systems. [1–10]
In this chapter, the characteristic properties of solid-state CPL of the chiral organic
luminophores are introduced. This will help in designing new solid-state circularly
polarized luminophores.
Y. Imai (B)
Kindai University, Osaka, Japan
e-mail: y-imai@apch.kindai.ac.jp
© Springer Nature Singapore Pte Ltd. 2020
M. Sakamoto and H. Uekusa (eds.), Advances in Organic Crystal Chemistry,
https://doi.org/10.1007/978-981-15-5085-0_16
325