Mechanochromic behavior of a luminescent silicone rubber. The mechanochromic luminescence phenomenon was first reported in the lowcost mechanochemical mc synthesis process of a covalent organic framework coftpma mc prepared using triformylphloroglucinol tp and melamine ma as precursors, which shows excellent performance as a hydroxyl radical. Luminescence mechanochromism induced by cluster isomerization. Physicists, engineers, and others from india and korea describe the history of luminescence. It can be caused by chemical reactions, electrical energy, subatomic motions or stress on a crystal. Mechanochromic fluorescent materials introduces the reader to the concept of mechanofluorochromism and the variety of applications of this group of materials. Mechanochromic luminescent mcl materials are noted for their unique spectral. Polymorphismdependent and mechanochromic luminescent. To date, most mcl materials only change between two colors, limiting their applications. Electrochromic materials and devices wiley online books. Multicomponent specimens containing two different responsive spiropyrans enabled selective. Some representative luminescent hybrid materials and their. Recent investigations into mechanochromic luminescent metal complex materials have been presented. Mechanochromic luminescence news newspapers books scholar jstor may 2017 learn how and when to remove this template message.
Luminescent mechanochromic materials are particularly appealing for the development of stimuliresponsive materials. Dec 03, 2007 in this, the only uptodate book on this key technology, the numberone expert in the field perfectly blends academic knowledge and industrial applications. Some representative luminescent hybrid materials and their properties are summarized in table 1 below. Recent advances in mechanochromic luminescent metal complexes. This is an important group of materials with a huge range of applications, including use in. Mechanochromic luminescence of aggregationinduced emission. Mechanochromic luminescence ml references to intensity andor color changes of solidstate luminescent materials induced by mechanical forces, such as rubbing, crushing, pressing, shearing, or smearing. This book explores the aggregationinduced emission aie effect, which has opened new avenues for the development of advanced luminogenic materials in. Luminescent inorganicorganic hybrid semiconductor materials. Mechanochromic luminescence ml references to intensity andor color changes of solidstate luminescent materials induced by mechanical forces.
Mechanochromic luminescent mcl materials belong to mrl materials. Modulation of luminescence chromic behaviors and environment. Luminescence is spontaneous emission of light by a substance not resulting from heat. The focus is on the inorganic side and the phenomena of. In addition to printing photochromic and dual photo and mechanochromic pcl materials, we also prepare pcl containing a spiropyran unit that is selectively activated by mechanical impetus. Luminescent materials and applications describes a wide range of materials and applications that are of current interest including organic light emitting materials and devices, inorganic light emitting diode materials and devices, downconversion materials, nanomaterials, and powder and thinfilm electroluminescent phosphor materials and devices. Pdf luminescent mechanochromic porous coordination polymers. An ideal mechanochromic material should comprise high fluorescent quantum yield in the solid state, significant fluorescent change after mechanical stimulus. A novel mechanochromic elastomer based on silicone rubber and coumarin 6 dye have been prepared with various concentrations of the dye ranges from 2wt. Photoluminescent materials that exhibit tunable emission properties when subjected. Adopting a didactical approach, professor ronda discusses all the underlying principles, such that both researchers as well as beginners in the field will profit from this book. Mechanochromic mc luminogens have found promising applications in mechanosensors, security papers, and optical storage for their change in emission behaviors in response to mechanical stimuli. Camera method for monitoring a mechanochromic luminescent. Tunable solid state emission of novel vshaped fluorophores by subtle.
For the luminescent mechanochromism system, uv shielding materials are used for the rigid film and different fluorescent dyes were incorporated into the elastic material. Mechanoresponsive luminescent mrl compounds change their emission color upon mechanical treatment. Luminescent mechanochromic porous coordination polymers tian wen, xiaoping zhou, dexiang zhang, and dan li a chem. Examples on mc luminescent materials are rare before the discovery of mc luminescence in aggregationinduced emission aie luminogens. Mechanochromic luminescent ml materials have formed a significant part of optical functional materials. Chapter 3 mechanochromic fluorescent materials rsc. Mikhail brik, institute of physics, university of tartu the members of research group are highly experienced in experimental and theoretical research of the electronic properties of optical materials, including the study of excitation, energy relaxation and luminescence processes in wide bandgap insulator materials of various morphologies. Progress report mechanoresponsive luminescent molecular.
Aggregationinduced emission by tang, ben zhong ebook. History of luminescence from ancient to modern times. Sep 26, 2016 a novel mechanochromic elastomer based on silicone rubber and coumarin 6 dye have been prepared with various concentrations of the dye ranges from 2wt. Pdf mechanochromic luminescence ml refers to the luminescence color and or intensity change of solidstate materials induced by mechanical.
Recent advances in mechanochromic luminescent metal. An emerging class of materials yoshimitsu sagara, shogo yamane, masato mitani, christoph weder and takashi kato dr. A catalogue record for this book is available from the british library isbn 9780470058183. Luminescent mechanochromic materials exhibiting reversible changes of their emissive properties in response to external mechanical forces are currently emerging as an important class of stimuliresponsive materials because of promising technological applications. Mechanochromic luminescent covalent organic frameworks for. By enabling light emission in the practically useful solid state, aie has the potential to significantly expand the technological applications of luminescent materials. This perspective discusses the mc luminescence of aiegens.
Mechanochromic luminescent mcl materials, capable of changing their photophysical properties in response to mechanical stimuli, have formed an integral part of functional materials over the last 20 years. Mechanochromic luminescent ml materials, which show a change in emission due to an applied mechanical stimulus, are useful components in a variety of applications, including organic lightemitting diodes, force sensors, optical memory storage, and nextgeneration lighting materials. Mechanochromic luminescent metal complexes have recently attracted considerable interest as smart materials for use in the fields of luminescence switches, mechanosensors, mechanohistory indicators, security papers, optoelectronic devices, and data storage. In chapter 3, mechanochromic luminescent metal complexes are described. The absorption of energy takes place via either the host lattice or on impurities. A dihedralanglecontrolled mechanochromic luminescent. Though the effects of arene substituents on difluoroboron. The impact of luminescence in technological scale intechopen.
Furthermore, if ml arises from the formation of haggregates upon smearing, as postulated, substitution at the. Mechanochromic luminescent mcl materials change their color in response to a change in their environment, like pressure and temperature. Mechanochromic fluorescent or mechanofluorochromic materials change their emission colours spectra when an. The international research team comprising of chemists at osaka. Pdf donoracceptor type chalcones 14 were synthesized and their morphological properties were investigated for mechanochromic. Their vast accumulation has recently opened new possibilities for the application of pressure sensors,, haptic sensors, deformation detection 5,6, optical data storage, and smart materials 10,11. Fundamentals and applicationschinese edition paperback march 1, 2011 by hong guang yan author see all formats and editions hide other formats and editions. After evaporating the solvent, cured samples were prepared as thin films using compression molding at 170 c. Mechanochromic luminescence of copper iodide clusters. Mechanical stimulation grinding of this pyrene derivative in the solid state results in a change of the photoluminescence from yellow to green. A turnon mechanochromic luminescent material serving as. In this, the only uptodate book on this key technology, the numberone expert in the field perfectly blends academic knowledge and industrial applications. Organic mechanochromic luminescent materials are under extensive research because of their potential applications in sensors and security. This distinguishes luminescence from incandescence, which is light emitted by a substance as a result of heating.
An ideal mechanochromic material should comprise high fluorescent quantum yield in the solid state, significant fluorescent change after mechanical stimulus and high sensitivity to mechanical force. Unlike triboluminescence which does not require additional excitation source other than force itself, ml is often manifested by external photoexcitation such as a uv lamp. The most primitive printed report of a solidstate luminescent material originated from a chinese text that was published in the song dynasty 9601279 a. Mechanochromic behavior of a luminescent elastomer under. Pdf a mechanistic investigation of mechanochromic luminescent. This special topic volume in the defect and diffusion forum series brings together nine papers on luminescent materials and their applications. Progress report mechanoresponsive luminescent molecular assemblies.
Mechanoluminescent behavior of a pyridinecontaining anthracene derivative. Finally, cbme presented mechanochromic luminescence in the solid state. This is an important group of materials with a huge range of applications, including use in sensors, memory chips, security inks, and light devices. Solidstateemissive materials often exhibit mechanochromic luminescence mcl, i. Hundreds of mrl compounds have been studied, but their mechanically triggered response at elevated temperature has remained virtually unexplored. Organic crystalline compounds to our best knowledge, the first organic compound that exhibits mechanoresponsive. This feature has evoked a growing interest in the last decades, thanks to the progress of chromogenic molecules whose optical characteristics and chemical functionalities allow their effective insertion in many thermoplastic and thermoset matrices. Mechanochromic fluorescent or mechanofluorochromic materials change their emission colours spectra when an appropriate external mechanical force stimulus is applied. Environmental influences like pressure and temperature cause mechanochromic luminescent materials to change between two colors by switching between a stable state and a metastable state. Mar 09, 2017 mechanochromic luminescent mcl materials change their color in response to a change in their environment, like pressure and temperature. In addition, transfer of energy through the lattice can take place.
For reproduction of material from all other rsc journals and books. The effect was wearing a veil in secrecy and illustrated consequently in the middle ages and past. These mechanochromic luminescent metal complex systems include znii, aui, ptii, agi, cui, aliii, iriii and heterodinuclear complexes. Mechanochromic luminescence based on crystaltocrystal. Luminescence is just as fascinating and luminescent materials are just as important as the number of books on these topics are rare. For most of the mechanochromic luminescent mcl materials, their mechanisms are based on the phase transition. We have met many beginners in these fields who have asked for a book introducing them to luminescence and its applications, without knowing the appropriate answer. When the device is released, the cracks of rigid uv shielding rigid film are closed, and thus the uv shielding layer can. Applications is the first book to explore the hightech applications of aie luminogens, including technological utilizations of aie materials in. Weder adolphe merkle institute, university of fribourg, chemin des verdiers 4, fribourg ch1700, switzerland.
Luminescent materials can be used as sensors for measuring high temperature and pressure which is difficult to measure with other methods because of its ultra sensitivity. This book explores the aggregationinduced emission aie effect, which has opened new avenues for the development of advanced luminogenic materials in the aggregate or solid state. One material, three colors asian scientist magazine. High performance mechanochromic luminescent materials from. Chapter 3 mechanochromic fluorescent materials rsc publishing. Prominent international figures in mechanofluorochromism consider the innovative research in this field over the last ten years. The first part of this book describes the different classes and processing techniques of electrochromic materials. Mechanochromic widespectrum luminescence based on a monoboron complex.
His research interests include fundamental luminescent materials, new luminescent devices, new avalanche injection devices and optical fiber. Mechanochromic polymers are defined as materials that are able to detect a mechanical stress through an optical output. Efficient and versatile mechanochromic luminescence of. Structuremechanical property correlations in mechanochromic. Mechanochromic behavior of a luminescent elastomer under tensile deformation jimin ha, yeon ju kim, kwangun jeong, changwoon nah bk21 plus haptic polymer composite research team, department of polymernano science and technology, chonbuk national university, jeonju 561756, republic of korea. Pdf mechanochromic luminescence ml refers to the luminescence color andor intensity change of solidstate materials induced by mechanical. Mechanochromic fluorescent materials are smart materials with fluorescent properties that change in response to external force stimuli. Mechanochromic luminescence of aggregationinduced emission luminogens american chemical society. The structure and mechanical properties of crystalline materials of three boron difluoride dibenzoylmethane bf2dbm derivatives were investigated to examine the correlation, if any, among mechanochromic luminescence ml behaviour, solidstate structure, and the mechanical behaviour of single crystals. Boydston department of chemistry and department of mechanical engineering, university of washington, seattle, washington 98195 united states.
The book is aimed at postgraduate students physicists, electrical engineers, chemical engineers, materials scientists, and engineers and researchers in industry, for example, at lighting and display companies and academia involved in studying conduction in solids and electronic materials. Apr 30, 2008 luminescent materials and applications describes a wide range of materials and applications that are of current interest including organic light emitting materials and devices, inorganic light emitting diode materials and devices, downconversion materials, nanomaterials, and powder and thinfilm electroluminescent phosphor materials and devices. Chapters provide in depth coverage of most reported. He was educated at mcmaster university and received his phd in electrical engineering from cornell university usa. Mechano luminescent behavior of a pyridinecontaining anthracene derivative. Establishing the mechanism responsible for the mechanochromism is always an.
Although the number of mechanochromic luminescent metal complexes is still limited to date, the unique properties of organometallic or coordination compounds should make these materials a novel source for mechanochromic fluorescent materials. To date, most mcl materials only change between two. Fundamentals and applicationschinese edition hong guang yan on. The twisted conformations of aie luminogens aiegens with. While there are many different ml active derivatives, few show room temperature selferasing. This pyrene derivative is the first example of a mechanochromic luminescent organic compound that responds to relative humidity. Luminescent materials or phosphors, mostly are solid inorganic materials consisting of a host lattice, usually intentionally doped fig. Most mcl materials generate two colors by switching between a stable state and one metastable state. Qualitative mechanical deformation tests show that the crystals of bf2dbmtbu2 can. This mechanochromic luminescence material was developed by. The book introduces the concept and covers the main types of mechanofluorochromic materials and their synthesis, mechanofluorochromic properties and applications in sensors, memory chips, security inks and light devices. The second part highlights nanostructured electrochromic materials and device fabrication, and the third part focuses on the applications such as smart windows, adaptive camouflage, biomimicry, wearable displays and fashion. Mechanochromic fluorescent materials rsc publishing. Sep 10, 2015 sus631mechanoluminescence under tensile load for perforated sus631 supecimem.1403 918 1592 1538 207 579 860 155 588 954 1011 1055 684 1469 713 682 529 825 175 10 1594 162 757 1028 1678 1200 401 580 731 527 582 864 1070 725 925 11 138 349 1138 369 1461 308 672