Smart On-Off Switching Luminescence Materials with Reversible Piezochromism and Basichromism

Yang, Wei; Liu, Chunlin; Lü, Shuang; Du, Jinya; Gao, Qingyun; Liu, Yi; Yang, Changying

doi:10.1002/slct.201701997

Cited by 9 publications

(3 citation statements)

References 58 publications

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“…It means the color of the stimuli-responsive materials can be changed by these six external stimuli. The chemochromic feature has several subsidiaries including basichromism, [24,25] hydrochromism, [26,27] solvatochromism, [28,29] and vapochromism. [30,31] All of these stimuli-responsive properties (hydrochromic, solvatochromic, and vapochromic) react to a specific chemical substance such as water or ammonia vapor [32] in different phases (gas, liquid, and solid).…”

Section: Stimuli-chromism Materialsmentioning

confidence: 99%

Stimuli‐Responsive Electrochemical Energy Storage Devices

Parsimehr

Ehsani

2022

The Chemical Record

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Electrochemical energy storage (EES) devices have been swiftly developed in recent years. Stimuli-responsive EES devices that respond to different external stimuli are considered the most advanced EES devices. The stimuli-responsive EES devices enhanced the performance and applications of the EES devices. The capability of the EES devices to respond to the various external stimuli due to produced advanced EES devices that distinguished the best performance and interactions in different situations. The stimuli-responsive EES devices have responsive behavior to different external stimuli including chemical compounds, electricity, photons, mechanical tensions, and temperature. All of these advanced responsiveness behaviors have originated from the functionality and specific structure of the EES devices. The multi-responsive EES devices have been recognized as the next generation of stimuli-responsive EES devices. There are two main steps in developing stimuli-responsive EES devices in the future. The first step is the combination of the economical, environmental, electrochemical, and multiresponsiveness priorities in an EES device. The second step is obtaining some advanced properties such as biocompatibility, flexibility, stretchability, transparency, and wearability in novel stimuli-responsive EES devices. Future studies on stimuli-responsive EES devices will be allocated to merging these significant two steps to improve the performance of the stimuliresponsive EES devices to challenge complicated situations.

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Section: Stimuli-chromism Materialsmentioning

confidence: 99%

Stimuli‐Responsive Electrochemical Energy Storage Devices

Parsimehr

Ehsani

2022

The Chemical Record

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“…Organic crystalline materials that exhibit tunable and switchable photoluminescence (PL) emission find promising applications in the fields of sensors, data storage and optoelectronic devices [1,2]. There is considerable research interest in controlling their optical properties through non-covalent routes, by modulating molecular conformation, as well as the collective arrangement and interaction mode of molecules in the solid [3−5].…”

Section: Introductionmentioning

confidence: 99%

The role of the synthetic chromophore of GFP in generating polymorphism-dependent on/off photoluminescence

et al. 2021

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Polymorphism, i.e. the ability of a solid material to exist in more than one crystal form, gives unique opportunity to study the correlation between the solid-state molecular arrangement and the photoluminescence properties, and allows optimizing the performances of materials with reduced synthesis effort. Compound 1, which results from the combination of 2phenylbenzoxazole (PBO) and benzylideneimidazolinone (BDI), was known to be weakly fluorescent in solution and in the solid state. Time-dependent density functional theory (TD-DFT) and spin-flip TD-DFT calculations were first used to revisit the behaviour of the isolated molecule in solution. It was shown that the relaxation pathway in the lowest singlet excited state leads to a thermally-accessible conical intersection (CI), which favours nonradiative deactivation. Then, crystallizing molecule 1 under precise experimental conditions allowed four distinct polymorphs and one solvate to be obtained. Remarkably, forms 1a and 1b exhibited strong photoluminescence (PL), while polymorphs 1c-e were virtually not emissive. Recrystallization allowed passing reversibly from one crystalline species to another. Mechanical stimuli, exhibition to solvent vapours and heating were not very effective, but a non-trivial effect of PL enhancement upon freezing was observed for 1a and 1b. The nonemissive polymorphs were characterized by the presence of a centrosymmetric dimer Manuscript File structured by hydrogen bonds, in which paired molecules vibrate with the same mode and are in turn subjected to maximum deformation, according to DFT calculations. Based on the whole set of results, possible deactivation mechanisms were proposed to account for the opposite PL behaviour of the two types of crystalline species. It is shown that the emergence of polymorphism and of a rare on/off PL mechanism may be attributed to the presence of the BDI unit in the molecule.

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“…Organic light‐emitting materials, especially luminescent materials that are sensitive to external stimuli, show great promise for applications in chemical sensors, storage media, anticounterfeiting ink, and optoelectronic devices . Among these materials, thermo‐ and mechanoresponsive luminescent materials are particularly appealing.…”

Section: Introductionmentioning

confidence: 99%

Crystallization‐Induced Emission Enhancement of a Deep‐Blue Luminescence Material with Tunable Mechano‐ and Thermochromism

Tan

et al. 2018

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Organic luminescent materials with the ability to reversibly switch the luminescence when subjected to external stimuli have attracted considerable interest in recent years. However, the examples of luminescent materials that exhibit multiresponsive properties are rarely reported. In this work, a new stimuli‐responsive dye P1 is designed and synthesized with two identical chromophores of naphthalimide, one at each side of an amidoamine‐based spacer. This amide‐rich molecule offers many possibilities for forming intra‐ and intermolecular hydrogen bond interactions. Particularly, P1 has an intrinsic property of cocrystallizing with methanol. Compared with the pristine P1 sample, the as‐prepared two‐component cocrystalline material displays an exceptive deep‐blue emission, which is extremely rare among naphthalimide‐based molecules in the solid state. Furthermore, the target material exhibits an obvious mechanochromic fluorescent behavior and a large spectral shift under force stimuli. On the other hand, the cocrystalline material shows an unusual “turn off” thermochromic luminescence accompanied by solvent evaporation. Moreover, using external stimuli to reversibly manipulate fluorescent quantum yields is rarely reported to date. The results demonstrate the feasibility of a new design strategy for solid‐state luminescence switching materials: the incorporation of solvents into organic compounds by cocrystallization to obtain a crystalline state luminescence system.

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Smart On-Off Switching Luminescence Materials with Reversible Piezochromism and Basichromism

Cited by 9 publications

References 58 publications

Stimuli‐Responsive Electrochemical Energy Storage Devices

Stimuli‐Responsive Electrochemical Energy Storage Devices

The role of the synthetic chromophore of GFP in generating polymorphism-dependent on/off photoluminescence

Crystallization‐Induced Emission Enhancement of a Deep‐Blue Luminescence Material with Tunable Mechano‐ and Thermochromism

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