Controlling solid-state optical properties of stimuli responsive dimethylamino-substituted dibenzoylmethane materials

2017 ◽  
Vol 1 (9) ◽  
pp. 1804-1817 ◽  
Author(s):  
Tristan Butler ◽  
Fang Wang ◽  
Michal Sabat ◽  
Cassandra L. Fraser
Keyword(s):  
Optical Properties ◽  
Solid State ◽  
Stimuli Responsive ◽  
Aggregation Induced Emission ◽  
Color Range ◽  
Orange Color

Dimethylamino β-diketones with electron donating and withdrawing substituents displayed solvatochromism and aggregation induced emission. In the solid state, a blue to orange color range and thermal and mechanoresponsive properties were achieved.

Aggregation-induced emission and reversible mechanochromic luminescence of carbazole-based triphenylacrylonitrile derivatives

RSC Advances ◽  
2016 ◽  
Vol 6 (39) ◽  
pp. 32697-32704 ◽  
Author(s):  
Yong Zhan ◽  
Peng Gong ◽  
Peng Yang ◽  
Zhe Jin ◽  
Ying Bao ◽  
...  
Keyword(s):  
Solid State ◽  
Organic Molecules ◽  
Stimuli Responsive ◽  
Responsive Materials ◽  
Aggregation Induced Emission ◽  
Π Interactions ◽  
Conjugated Organic Molecules ◽  
Mechanochromic Luminescence

Conjugated organic molecules exhibiting AIE are characterized by the strongly twisted conjugated skeleton, which could provide loose intermolecular stacking and weak π–π interactions in the solid state to generate stimuli-responsive materials.

Bis(pentafluorophenyl)-o-carborane and its arylthio derivatives: synthesis, electrochemistry and optical properties

2020 ◽  
Vol 49 (37) ◽  
pp. 12985-12989
Author(s):  
Naoki Shida ◽  
Satoshi Owaki ◽  
Hiroshi Eguchi ◽  
Takanobu Nishikawa ◽  
Ikuyoshi Tomita ◽  
...  
Keyword(s):  
Optical Properties ◽  
Solid State ◽  
Nucleophilic Aromatic Substitution ◽  
Aromatic Substitution ◽  
Aggregation Induced Emission

The synthesis of bis(pentafluorophenyl)-o-carborane is reported, which is further thiolated by nucleophilic aromatic substitution (SNAr) reaction to give emissive materials in the solid state following aggregation-induced emission (AIE) fashion.

scholarly journals Aggregation Induced Emission and Nonlinear Optical Properties of an Intramolecular Charge-Transfer Compound

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 1909
Author(s):  
Songhua Chen ◽  
Rui Luo ◽  
Xinyue Li ◽  
Meiyun He ◽  
Shanshan Fu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Charge Transfer ◽  
Solid State ◽  
Nonlinear Optics ◽  
Nonlinear Optical ◽  
High Efficiency ◽  
Intramolecular Charge Transfer ◽  
Dye Sensitized Solar Cells ◽  
Nonlinear Optical Properties ◽  
Aggregation Induced Emission

Intramolecular charge transfer (ICT) compounds have attracted wide attention for their potential applications in optoelectronic materials and devices such as fluorescent sensors, dye-sensitized solar cells, organic light emitting diodes and nonlinear optics. In this work, we have synthesized a new ICT compound, dimethyl-[4-(7-nitro-benzo[1,2,5]thiadiazol-4-yl)-phenyl]-amine (BTN), and have fabricated it into low dimensional micro/nano structures with well-defined morphologies. These self-assembled nanostructures exhibit high efficiency solid state fluorescence via an aggregation induced emission mechanism, which overcomes the defect of fluorescence quenching caused by aggregation in the solid state of traditional luminescent materials. We also explored and studied the nonlinear optical properties of this material through the Z-scan method, and found that this material exhibits large third-order nonlinear absorption and refraction coefficients, which promises applications of the materials in the fields of nonlinear optics and optoelectronics.

scholarly journals Stimuli-Responsive Phase Change Materials: Optical and Optoelectronic Applications

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3396
Author(s):  
Irene Vassalini ◽  
Ivano Alessandri ◽  
Domenico de Ceglia
Keyword(s):  
Optical Properties ◽  
Solid State ◽  
Phase Change ◽  
Vanadium Dioxide ◽  
Phase Change Materials ◽  
Optoelectronic Devices ◽  
Information Storage ◽  
Stimuli Responsive ◽  
Responsive Materials ◽  
Solid State Devices

Stimuli-responsive materials offer a large variety of possibilities in fabrication of solid- state devices. Phase change materials (PCMs) undergo rapid and drastic changes of their optical properties upon switching from one crystallographic phase to another one. This peculiarity makes PCMs ideal candidates for a number of applications including sensors, active displays, photonic volatile and non-volatile memories for information storage and computer science and optoelectronic devices. This review analyzes different examples of PCMs, in particular germanium–antimonium tellurides and vanadium dioxide (VO2) and their applications in the above-mentioned fields, with a detailed discussion on potential, limitations and challenges.

Quantum optics with nitrogen-vacancy centres in diamond

2017 ◽  
Author(s):  
Yiwen Chu ◽  
Mikhail D. Lukin
Keyword(s):  
Optical Properties ◽  
Quantum Information ◽  
Solid State ◽  
Quantum Optics ◽  
Quantum States ◽  
Nitrogen Vacancy ◽  
Common Theme ◽  
External Effects ◽  
Promising Candidate ◽  
Optical Photons

A common theme in the implementation of quantum technologies involves addressing the seemingly contradictory needs for controllability and isolation from external effects. Undesirable effects of the environment must be minimized, while at the same time techniques and tools must be developed that enable interaction with the system in a controllable and well-defined manner. This chapter addresses several aspects of this theme with regard to a particularly promising candidate for developing applications in both metrology and quantum information, namely the nitrogen-vacancy (NV) centre in diamond. The chapter describes how the quantum states of NV centres can be manipulated, probed, and efficiently coupled with optical photons. It also discusses ways of tackling the challenges of controlling the optical properties of these emitters inside a complex solid state environment.

Rational design of HA-AuNPs@AIEDs nanoassembly for activatable fluorescence detection of HAase and imaging in tumor cells.

2021 ◽  
Author(s):  
Shenglan Wang ◽  
Chong-Hua Zhang ◽  
Peisheng Zhang ◽  
Shu Chen ◽  
Zhi-ling Song ◽  
...  
Keyword(s):  
Optical Properties ◽  
Tumor Cells ◽  
Fluorescence Detection ◽  
Rational Design ◽  
High Brightness ◽  
Aggregation Induced Emission ◽  
Fluorescence Bioimaging ◽  
In Virtue Of

Aggregation induced emission (AIE) dots have gained broad attention in fluorescence bioimaging and biosensor in virtue of their distinctive optical properties of splendid biocompatibility, high brightness and good photostability. However,...

scholarly journals Unusual piezochromic fluorescence of a distyrylpyrazine derivative crystals: phase transition through [2 + 2] photocycloaddition under UV irradiation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Young-Jae Jin ◽  
Hyosang Park ◽  
Byung-Chun Moon ◽  
Jae Hong Kim ◽  
Wang-Eun Lee ◽  
...  
Keyword(s):  
Phase Transition ◽  
Solid State ◽  
Uv Irradiation ◽  
Mechanical Grinding ◽  
Green Color ◽  
H Nmr ◽  
Uv Visible ◽  
Stacking Structure ◽  
Orange Color ◽  
Molecular Stacking

AbstractThe piezochromic fluorescence (FL) of a distyrylpyrazine derivative, 2,3-diisocyano-5,6-distyrylpyrazine (DSP), was investigated in this study. Depending on the recrystallization method, DSP afforded two different crystals with green and orange FL emission. The orange color FL emission crystal (O-form) was easily converted to the green color FL emission one (G-form) by manual grinding. The G-form was also converted to a slightly different orange color FL emission crystal (RO-form) by a weak UV irradiation. When the RO-form was ground again, the G-form was regenerated. The FL colors changed between the G- and RO-forms over several ten times by repeated mechanical grinding and UV irradiation. The FL, UV–visible, 1H-NMR and XRD results showed that the O (or RO)-to-G transformation induced by mechanical stress results from the change of degree of molecular stacking from dense molecular stacking structure to relatively loose molecular stacking structure, whereas the G-to-RO reconversion by UV irradiation results from return to dense molecular stacking structure again due to lattice movement (lattice slipping) allowed by photocycloaddition in solid-state.

Carbazole-modified thiazolo[3,2-c][1,3,5,2]oxadiazaborinines exhibiting aggregation-induced emission and mechanofluorochromism

2021 ◽  
Author(s):  
Mykhaylo A. Potopnyk ◽  
Mykola Kravets ◽  
Roman Luboradzki ◽  
Dmytro Volyniuk ◽  
Volodymyr Sashuk ◽  
...  
Keyword(s):  
Solid State ◽  
Fluorescence Properties ◽  
Aggregation Induced Emission ◽  
Donor Acceptor ◽  
Solid State Fluorescence ◽  
Active Donor

Two novel AIE-active donor–acceptor organoboron complexes with a carbazole donor unit are developed and their morphology-dependent solid-state fluorescence properties are established.

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