4.6 Article

Naphthylacetonitrile isomerism and donor conformational flexibility controlled molecular self-assembly and solid-state fluorescence properties

Related references

Note: Only part of the references are listed.
Article Spectroscopy

Methoxy substituent facilitated wide solvatofluorochromism, white light emission, polymorphism and stimuli-responsive fluorescence switching in donor-it-acceptor

Parthasarathy Gayathri et al.

Summary: Introducing a methoxy substituent into a triphenylamine-acetophenone based donor-it-acceptor fluorophore resulted in strong solvatofluorochromism, including white light emission and fluorescent polymorphs. These compounds exhibited tunable emission in solution, with some showing single molecule white light emission in specific solvents. In the solid-state, they displayed strong green/yellow fluorescence, and the molecular conformation affected their fluorescent properties. One of the compounds exhibited morphology-induced fluorescence tuning, while the others showed emissive color change and self-reversible fluorescence switching upon crushing and heating.

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY (2023)

Article Chemistry, Multidisciplinary

Design Strategy for Enabling Multifunctional Properties of Anthracene-based Emitters

Upasana Deori et al.

Summary: This study designed and synthesized two anthracene based compounds, which exhibit multifunctional properties including aggregation-induced emission (AIE), multi-responsive polymorphs, mechanoluminescence, and electroluminescence. By controlling the temperature, three polymorphic phases were achieved from one of the compounds, showing different emission colors under mechanical stimuli. Additionally, the compounds were used as emitters in blue and green organic light-emitting diodes (OLEDs), achieving high external quantum efficiency.

CHEMISTRY-AN ASIAN JOURNAL (2023)

Article Optics

Positional isomerism mediated the self-assembly and optical properties of amphiphilic cyanostyrene-based mesogens

Nana Li et al.

Summary: Two amphiphiles with phenylthiophene and cyanostyrene groups in the rigid core and methyl and oligooxyethylene units at the terminal were synthesized. Their mesomorphic and optical behaviors were investigated using various experimental techniques. The positional isomerism led to distinct transition of self-assembly and optical properties, offering a method for constructing multifunctional molecules with different properties and applications.

JOURNAL OF LUMINESCENCE (2023)

Article Chemistry, Physical

A First-Principles Investigation of Structure-Luminescence Activity of Donor-Acceptor-Donor Organic Triad

Pandiselvi Durairaj et al.

Summary: The structure-property relationships of an organic D-A-D triad were investigated to understand its photoluminescence activity. In a recent experiment, the PTZ-DBPHZ-PTZ (D-A-D) triad exhibited multicolor luminescence properties and thermally activated delayed fluorescence (TADF) emission. Computational studies on the photophysical properties of the triad's conformers provided a detailed understanding of its luminescence activity. The results showed that the twisting of the axial phenothiazine (PTZ) unit altered the nature of the excited state, leading to a large red shift in emission energy.

JOURNAL OF PHYSICAL CHEMISTRY A (2023)

Article Chemistry, Physical

Synthesis of ESIPT fluorophores with two intramolecular H-bonding functionalities: Reversible mechanofluorochromism and conformation controlled solid state fluorescence efficiency

Parthasarathy Gayathri et al.

Summary: Two new ESIPT fluorophores, Naph-2-OH and TPA-2-OH, were synthesized with unsymmetrical intramolecular H-bonding functionalities. The crystal structure analysis revealed strong intramolecular H-bonding and twisted molecular conformation. Both compounds exhibited enhanced emission and reversible fluorescence switching due to the phase transformation between crystalline and amorphous state.

JOURNAL OF MOLECULAR STRUCTURE (2023)

Article Materials Science, Multidisciplinary

Positional Isomers of Phenylacridine/Spirobifluorene as Deep-Blue Fluorescent Emitters for Organic Light-Emitting Diodes

Clement Brouillac et al.

Summary: Designing deep-blue fluorophores with a low CIEy is crucial for OLED technology, whether for display applications or new applications like antibacterial light sources. This study reports the synthesis, physico-chemical properties, and application of two deep-blue emitters in an OLED. The emitters demonstrated high device performance with suitable CIE coordinates, and one emitter showed a deep-blue emission with an EQE of 1.7% and a V-on of 4 V, fitting the NTSC and EBU standards.

ADVANCED MATERIALS TECHNOLOGIES (2023)

Article Chemistry, Physical

Three in One: Stimuli-Responsive Fluorescence, Solid-State Emission, and Dual-Organelle Imaging Using a Pyrene-Benzophenone Derivative

Subhankar Kundu et al.

Summary: This study investigates the trade-off between the monomer and aggregate emissions of a pyrene-benzophenone derivative in solution, solid-state, and nanoaggregates, and demonstrates the impact of external stimuli on aggregate emission. The results provide insights into the intermolecular interactions and sensitivity of solid-state emission to external stimuli.

JOURNAL OF PHYSICAL CHEMISTRY B (2022)

Article Chemistry, Multidisciplinary

Thermally Activated Delayed Fluorescence of Aggregates Induced by Strong π-π Interactions and Reversible Dual-Responsive Luminescence Switching

Xiangyu Zhang et al.

Summary: A reversible dual-responsive luminescent material was developed, with the ability to switch between colors and lifetimes in response to external stimuli. This was achieved by manipulating the intermolecular interactions of individual molecules, resulting in red emission through thermally activated delayed fluorescence (TADF) of aggregates.

CCS CHEMISTRY (2022)

Article Chemistry, Physical

Isomeric Pair of E/Z Tetraphenylethene-Cored Luminogens Showing Distinguishing Mechanoresponsive Luminescence Turn-On and Two-Color Behavior

Yu-Xin Peng et al.

Summary: A pair of TPE-based E/Z isomers have been synthesized and separated, showing reversible isomerization and distinct solid-state photoluminescent properties. The isomers exhibit obvious AIEE properties and the difference in emissive color between them is larger than most reported cases. Interestingly, the isomers also display different mechanoresponsive luminescence and dichromic behavior.

JOURNAL OF PHYSICAL CHEMISTRY C (2022)

Article Chemistry, Applied

Reversible mechanofluorochromism by simple phenyl and mesitylene appended solid state emitters via crystal to amorphous transitions

Bhaswati Sarkar et al.

Summary: Developing a variety of organic compounds with bright solid-state emission is highly advantageous, especially when they exhibit stimuli-responsive properties. Among the two D-pi-A structures synthesized, the mesitylene derivative shows significant and highly reversible mechano-fluorochromic activity, making it a potential candidate for developing optoelectronic devices.

DYES AND PIGMENTS (2022)

Article Chemistry, Physical

CF3 H-bonding locked aromatic stacking of picric acid with mechanofluorochromic fluorophores: highly selective reusable sensor and rewritable fluorescence platform

Parthasarathy Gayathri et al.

Summary: Tailoring the molecular structure of organic fluorescent molecules is essential in generating functional materials for optical, opto-electronic and bio-imaging applications. In this study, CF3/CH3 functionalized mechanofluorochromic molecules were synthesized and demonstrated their ability to sense picric acid (PA) and switch fluorescence based on functional groups. The CF3 functionalized molecule showed reversible fluorescence switching through mechanical force and heating, while the CH3 functionalized molecule displayed on-off fluorescence switching. The CF3 functionalized molecule also showed selective fluorescence sensing of PA among other compounds, and thin-film sensors were successfully fabricated for onsite detection of PA in aqueous medium.

MOLECULAR SYSTEMS DESIGN & ENGINEERING (2022)

Article Chemistry, Multidisciplinary

Pyridine nitrogen position controlled molecular packing and stimuli-responsive solid-state fluorescence switching: supramolecular complexation facilitated turn-on fluorescence

Parthasarathy Gayathri et al.

Summary: The synthesis of pyridylacetonitrile integrated anthracene fluorophores and their stimuli-responsive fluorescence switching controlled by pyridine nitrogen position were reported. The results showed that the position of nitrogen significantly influenced the molecular conformation and packing, which in turn affected the solid-state fluorescence properties.

CRYSTENGCOMM (2022)

Article Chemistry, Physical

Three in One: Stimuli-Responsive Fluorescence, Solid-State Emission, and Dual-Organelle Imaging Using a PyreneBenzophenone Derivative

Subhankar Kundu et al.

Summary: This study investigated the emission characteristics of ABzPy in different environments using spectroscopic and microscopic methods. External stimuli such as viscosity and pH had an impact on aggregate emission, while the broad emission band in nanoaggregates could be used for specific cellular imaging.

JOURNAL OF PHYSICAL CHEMISTRY B (2022)

Article Chemistry, Multidisciplinary

π-Extended Carbazole Derivatives as Host Materials for Highly Efficient and Long-Life Green Phosphorescent Organic Light-Emitting Diodes

Ayato Arai et al.

Summary: In this study, by designing and developing benzothienocarbazole-based host materials, the pi conjugation of the carbazole unit was expanded to enhance OLED lifetime. The new material m1BTCBP demonstrated higher performance compared to mCBP, with an operational luminescence half-life of 300 hours.

CHEMISTRY-A EUROPEAN JOURNAL (2021)

Review Materials Science, Multidisciplinary

Recent Advances on Molecular Crystalline Luminescent Materials for Optical Waveguides

Siqin Wu et al.

Summary: Molecule-based fluorescent materials with optical waveguides (MFOWs) have unique photoluminescence properties and cover the entire visible light region. Research progress on MFOWs and emerging materials for high-performance applications are summarized, offering potential guidance for future design and development of MFOWs.

ADVANCED OPTICAL MATERIALS (2021)

Article Chemistry, Multidisciplinary

Synthesis of Highly Twisted, Nonplanar Aromatic Macrocycles Enabled by an Axially Chiral 4,5-Diphenylphenanthrene Building Block

Yuanming Li et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

Article Multidisciplinary Sciences

Color-tunable single-fluorophore supramolecular system with assembly-encoded emission

Qian Wang et al.

NATURE COMMUNICATIONS (2020)

Review Biochemistry & Molecular Biology

Fluorescein Derivatives as Fluorescent Probes for pH Monitoring along Recent Biological Applications

Florent Le Guern et al.

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2020)

Review Chemistry, Multidisciplinary

Tailoring Tunable Luminescence via Supramolecular Assembly Strategies

Zizhao Huang et al.

CELL REPORTS PHYSICAL SCIENCE (2020)

Article Materials Science, Multidisciplinary

Donor and acceptor engineering for BINOL based AIEgens with enhanced fluorescence performance

Pei-Long Lu et al.

MATERIALS ADVANCES (2020)

Review Chemistry, Multidisciplinary

Triphenylamine-based stimuli-responsive solid state fluorescent materials

Parthsarathy Gayathri et al.

NEW JOURNAL OF CHEMISTRY (2020)

Article Chemistry, Multidisciplinary

Long-Lived Room-Temperature Phosphorescence for Visual and Quantitative Detection of Oxygen

Yusheng Zhou et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2019)

Article Engineering, Electrical & Electronic

Ultrasensitive Charged Object Detection Based on Rubrene Crystal Sensor

Haiting Wang et al.

IEEE TRANSACTIONS ON ELECTRON DEVICES (2019)

Review Materials Science, Multidisciplinary

Recent advances of donor-acceptor type carbazole-based molecules for light emitting applications

Przemyslaw Ledwon

ORGANIC ELECTRONICS (2019)

Article Materials Science, Multidisciplinary

Pyrene-based blue emitters with aggregation-induced emission features for high-performance organic light-emitting diodes

Xing Feng et al.

JOURNAL OF MATERIALS CHEMISTRY C (2019)

Article Chemistry, Multidisciplinary

Purely Organic Thermally Activated Delayed Fluorescence Materials for Organic Light-Emitting Diodes

Michael Y. Wong et al.

ADVANCED MATERIALS (2017)

Review Chemistry, Multidisciplinary

Organic Lasers: Recent Developments on Materials, Device Geometries, and Fabrication Techniques

Alexander J. C. Kuehne et al.

CHEMICAL REVIEWS (2016)

Article Chemistry, Multidisciplinary

Effect of configurational isomerism and polymorphism on chalcone fluorescent properties

Ruimin Zhang et al.

NEW JOURNAL OF CHEMISTRY (2016)

Review Chemistry, Multidisciplinary

Aggregation-Induced Emission: Together We Shine, United We Soar!

Ju Mei et al.

CHEMICAL REVIEWS (2015)

Review Materials Science, Multidisciplinary

Recent advances of the emitters for high performance deep-blue organic light-emitting diodes

Xiaolong Yang et al.

JOURNAL OF MATERIALS CHEMISTRY C (2015)

Review Chemistry, Multidisciplinary

Organic Solid-State Fluorescence: Strategies for Generating Switchable and Tunable Fluorescent Materials

Savarimuthu Philip Anthony

CHEMPLUSCHEM (2012)