substances. While a number of investigations have addressed and disclosed some of
these issues, more studies on the appropriate model systems are certainly anticipated
to better comprehend the structure–property relationships for the CPL response.
This book comprehensively collects leading research on recently advanced CPL
of small organic molecules, mostly in their isolated states, providing a status quo of
the CPL chemistry that will be useful for scientists, researchers, and engineers in
general, and is particularly useful for photophysical chemists, organic chemists,
supramolecular chemists, spectroscopists, chemical engineers, and others in
chemistry-related fields. As compared to lanthanide-based fluorophores, the studies
on the organic molecule-based CPL behavior and preparations of CPL-responsive
organic molecule are in emerging phase with the relatively smaller dissymmetric
factors, but has been extensively attracted in recent years, since chiral organic
molecules are potentially more useful in practical applications, as their fluorescence
intensity, wavelength, and degree of dissymmetry can be rationally modulated
through structural modifications.
This book begins with a short introductory chapter on molecular CPL, and the
following chapters of this book consist of detailed descriptions of state-of-the-art
advancement of all convincing CPL-responsive organic molecules, classified by the
type of inherent chirality as axial chirality in biaryls (by Imai), planar chirality in
cyclophanes (by Morisaki), helical chirality in helicenes (by Crassous and Hasobe),
distorted chirality in dipyrromethene-related dyes (by Hall and de la Moya Cerero),
and other relatively new and unique chiral molecules (by Mori). The book also
covers future applications in areas such as advanced imaging and information
technologies (by Nakashima). Most of the studies described here are rather focused
on the structure–property relationship of relatively simple molecules investigated in
non-aggregated form in solution, and also includes some recent progresses on
supramolecular behaviors in host–guest interaction and aggregation formation
(by Haino, Abbate, and Liu). The extended photophysical processes such as excimer
formation as well as delayed fluorescence are also thought-provoking in terms of the
CPL responses, which are also addressed in this book (by Lacour and Pieters). Last
but not least, this book also highlights the recent development of commercially
available CPL instrument (by Suzuki) as well as time-resolved CD spectroscopy
(by Araki), to facilitate the further development and future design of CPL molecules.
In order to make each contribution complete in itself, there is some inevitable
overlap among the chapters.
Reports and studies on CPL materials, especially of organic systems, are rapidly
increasing. Accordingly, it is difficult to cover all aspects of this ongoing active
research in one book. However, this book on the CPL of isolated organic molecules
serves the purpose of providing valuable information and some insights into the
industry, academics, and researchers who are searching for current state of this
emerging CPL research area, hoping that the book will stimulate further academic
and applied research and promote the industrial applications of organic moleculebased CPL-response materials.
vi
Preface
these issues, more studies on the appropriate model systems are certainly anticipated
to better comprehend the structure–property relationships for the CPL response.
This book comprehensively collects leading research on recently advanced CPL
of small organic molecules, mostly in their isolated states, providing a status quo of
the CPL chemistry that will be useful for scientists, researchers, and engineers in
general, and is particularly useful for photophysical chemists, organic chemists,
supramolecular chemists, spectroscopists, chemical engineers, and others in
chemistry-related fields. As compared to lanthanide-based fluorophores, the studies
on the organic molecule-based CPL behavior and preparations of CPL-responsive
organic molecule are in emerging phase with the relatively smaller dissymmetric
factors, but has been extensively attracted in recent years, since chiral organic
molecules are potentially more useful in practical applications, as their fluorescence
intensity, wavelength, and degree of dissymmetry can be rationally modulated
through structural modifications.
This book begins with a short introductory chapter on molecular CPL, and the
following chapters of this book consist of detailed descriptions of state-of-the-art
advancement of all convincing CPL-responsive organic molecules, classified by the
type of inherent chirality as axial chirality in biaryls (by Imai), planar chirality in
cyclophanes (by Morisaki), helical chirality in helicenes (by Crassous and Hasobe),
distorted chirality in dipyrromethene-related dyes (by Hall and de la Moya Cerero),
and other relatively new and unique chiral molecules (by Mori). The book also
covers future applications in areas such as advanced imaging and information
technologies (by Nakashima). Most of the studies described here are rather focused
on the structure–property relationship of relatively simple molecules investigated in
non-aggregated form in solution, and also includes some recent progresses on
supramolecular behaviors in host–guest interaction and aggregation formation
(by Haino, Abbate, and Liu). The extended photophysical processes such as excimer
formation as well as delayed fluorescence are also thought-provoking in terms of the
CPL responses, which are also addressed in this book (by Lacour and Pieters). Last
but not least, this book also highlights the recent development of commercially
available CPL instrument (by Suzuki) as well as time-resolved CD spectroscopy
(by Araki), to facilitate the further development and future design of CPL molecules.
In order to make each contribution complete in itself, there is some inevitable
overlap among the chapters.
Reports and studies on CPL materials, especially of organic systems, are rapidly
increasing. Accordingly, it is difficult to cover all aspects of this ongoing active
research in one book. However, this book on the CPL of isolated organic molecules
serves the purpose of providing valuable information and some insights into the
industry, academics, and researchers who are searching for current state of this
emerging CPL research area, hoping that the book will stimulate further academic
and applied research and promote the industrial applications of organic moleculebased CPL-response materials.
vi
Preface