Photon-Working Switches
This book focuses on photoswitches. The objective of the book is to introduce researchers and graduate course students who are interested in "photon-working switches" not only to the fundamentals but also to the latest research being carried out in this f
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otonWorking Switches
Photon-Working Switches
Yasushi Yokoyama Keitaro Nakatani •
Editors
Photon-Working Switches
123
Editors Yasushi Yokoyama Yokohama National University Yokohama, Kanagawa Japan
ISBN 978-4-431-56542-0 DOI 10.1007/978-4-431-56544-4
Keitaro Nakatani École normale supérieure de Cachan Université Paris-Saclay Cachan France
ISBN 978-4-431-56544-4
(eBook)
Library of Congress Control Number: 2017935957 © Springer Japan KK 2017 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. The publisher, the authors and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, express or implied, with respect to the material contained herein or for any errors or omissions that may have been made. The publisher remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. Printed on acid-free paper This Springer imprint is published by Springer Nature The registered company is Springer Japan KK The registered company address is: Chiyoda First Bldg. East, 3-8-1 Nishi-Kanda, Chiyoda-ku, Tokyo 101-0065, Japan
Preface
Photochromism is well recognized as one of the most fascinating research fields in chemistry. It is defined as the photoinduced reversible transformation of a chemical species between two stable forms accompanied by distinguishable changes in the absorption spectra. In the early days of research, only the change in color induced by photoirradiation was the focus of attention. However, in recent years, we have come to regard photochromism as photon-working switches or photoswitches— photochemically induced reversible changes in any of the properties or functions of ordinary molecules, biomolecules, supramolecules, polymers, and integrated molecular systems. As described by Dr. J.-C. Micheau in his narrative history, the PHoto-switchablE organic molecular systems and deviceS (PHENICS) network and symposiums from 2008 acted as catalysts of international collaborations between France, Japan, Russia, and China, and later Germany. These collaborations and exchanges have greatly increased the number of researchers and advanced the quality of research in photochromism worldwide. At the end of the second 4-year activity term of PHENICS i
