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Majumder R, Jana D, Ghorai BK. Synthesis of V-shaped Thiophene Based Rotor-Stilbene: Substituent Dependent Aggregation and Photophysical Properties. J Fluoresc 2024:10.1007/s10895-024-03591-2. [PMID: 38319521 DOI: 10.1007/s10895-024-03591-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 01/15/2024] [Indexed: 02/07/2024]
Abstract
Thiophene core V-shaped rotor-stilbene derivatives have been synthesized utilizing two-fold Heck coupling reaction. These compounds are blue emitters with moderate quantum yield in dilute solution. Rotor nature of the synthesized stilbenes supports aggregation induced emission (AIE) behaviour and they show substituent dependent emission behavior in aggregate state. In presence of donating groups (e.g., tert-butyl, methoxy, diphenylamine group) in stilbenes, they exhibit AIE property. But with the introduction of electron withdrawing group (nitro group), they shows aggregation caused quenching (ACQ) behavior. Different types of nano-aggregates formation is observed in aggregated state, which was confirmed by dynamic light scattering (DLS) and scanning electron microscopy (SEM) studies. The details photophysical (absorption, fluorescence, and lifetime), electrochemical property (cyclic voltammetry) and thermal stability have been investigated. Optimized structure, energy and electronic distribution of molecular orbitals have been studied by theoretical calculation.
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Affiliation(s)
- Riya Majumder
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, 711103, India
| | - Debabrata Jana
- Department of Chemistry, Ramakrishna Mission Vivekananda Centenary College, Kolkata, 700 118, India
| | - Binay Krishna Ghorai
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, 711103, India.
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2
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Panja SK. Photodissociation and kinetics of bis-2-benzylidenemalononitrile (BBM) in different micelles environment. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Battisti A, Ambrosetti M, Ruggeri G, Cappelli C, Pucci A. A 4,4'-bis(2-benzoxazolyl)stilbene luminescent probe: assessment of aggregate formation through photophysics experiments and quantum-chemical calculations. Phys Chem Chem Phys 2018; 20:26249-26258. [PMID: 30324198 DOI: 10.1039/c8cp04450c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A combination of experimental and quantum mechanical investigations is applied to the study of the optical features of 4,4'-bis(2-benzoxazolyl)stilbene (BBS) dissolved in solution or in a poly(l-lactic acid) (PLA) thermoplastic matrix at different concentrations. The experimental analyses allow the characterization of BBS solutions and dispersions in terms of absorption and emission features, along with the collection of some key parameters such as fluorescence quantum yield, anisotropy and lifetime, while the computational approach gives a detailed description of the photophysical behavior of BBS in the different environments. For the 10-5 M BBS solution, the fluorescence spectra show the expected peaks at 425 and 455 nm of the non-interacting BBS molecules with a single fluorescence lifetime of 0.85 ns without revealing any aggregation phenomena, prevented by the short lifetime and fast diffusion rate of the monomer. Moreover, the calculated spectra are in excellent agreement with the experiments, thus showing the reliability of the computational approach. In time-resolved emission experiments (TRES) on more concentrated solutions (10-4 M) and on BBS crystals, the presence of an excimer is revealed by the appearance of a broad peak around 540 nm, followed by the disappearance of the two main peaks at 460 nm on a time scale of about 10 ns. The computational analysis attributes this behavior to the formation of aggregates of different geometries. The BBS dispersions in PLA reveal the presence of different BBS architectures depending on the fluorophore content. Even at low concentrations, BBS is mainly dispersed as a monomer in the matrix, spheroid aggregates of about 800-900 nm in diameter are also present and the relevant fluorescence spectra arise from the combination of monomer and aggregate contributions. At higher concentrations, BBS starts forming crystals of a peculiar helicoidal shape, with a diameter of about 2 μm, variable length up to several hundreds of μm and emission spectra similar to those of isolated BBS crystals.
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Affiliation(s)
- Antonella Battisti
- NEST - Scuola Normale Superiore and Istituto Nanoscienze - CNR (CNR-NANO), Piazza San Silvestro 12, I-56127 Pisa, Italy. and M3-Village, Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali - INSTM, p.zza San Silvestro 12, I-56127 Pisa, Italy
| | - Matteo Ambrosetti
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy.
| | - Giacomo Ruggeri
- Dipartimento di Chimica e Chimica Industriale, Universitá di Pisa, Via Moruzzi 13, I-56124 Pisa, Italy.
| | - Chiara Cappelli
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy.
| | - Andrea Pucci
- Dipartimento di Chimica e Chimica Industriale, Universitá di Pisa, Via Moruzzi 13, I-56124 Pisa, Italy.
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Mishra S, Awasthi P, Singh J, Gupta RK, Singh V, Kant R, Jeet R, Goswami D, Goel A. White Light Induced E/Z-Photoisomerization of Diphenylamine-Tethered Fluorescent Stilbene Derivatives: Synthesis, Photophysical, and Electrochemical Investigation. J Org Chem 2018. [DOI: 10.1021/acs.joc.8b00033] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shachi Mishra
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Pallavi Awasthi
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Jagriti Singh
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Rahul Kumar Gupta
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Vikram Singh
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Ruchir Kant
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Ram Jeet
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Debabrata Goswami
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Atul Goel
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
- Academy of Scientific and Innovative Research, New Delhi 110001, India
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Battisti A, Minei P, Pucci A, Bizzarri R. Hue-based quantification of mechanochromism towards a cost-effective detection of mechanical strain in polymer systems. Chem Commun (Camb) 2017; 53:248-251. [PMID: 27928558 DOI: 10.1039/c6cc08360a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
HSV is a digital colour space easily accessible by the transformation of RGB images. In this work, the hue parameter H was used to assess mechanically induced colour changes of the aggregation-sensitive fluorescent dye 4,4'-bis-(2-benzoxazolyl)stilbene (BBS), thus implementing a cheap and reliable method for the detection of mechanical deformation in a polymer matrix.
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Affiliation(s)
- A Battisti
- NEST - Scuola Normale Superiore, Istituto Nanoscienze - CNR (CNR-NANO), p.zza San Silvestro 12, 56127 Pisa, Italy. and M3-Village, Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali - INSTM, p.zza San Silvestro 12, 56127 Pisa, Italy
| | - P Minei
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Moruzzi 13, 56124 Pisa, Italy.
| | - A Pucci
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Moruzzi 13, 56124 Pisa, Italy.
| | - R Bizzarri
- NEST - Scuola Normale Superiore, Istituto Nanoscienze - CNR (CNR-NANO), p.zza San Silvestro 12, 56127 Pisa, Italy. and M3-Village, Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali - INSTM, p.zza San Silvestro 12, 56127 Pisa, Italy
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Carayon C, Fery-Forgues S. 2-Phenylbenzoxazole derivatives: a family of robust emitters of solid-state fluorescence. Photochem Photobiol Sci 2017; 16:1020-1035. [DOI: 10.1039/c7pp00112f] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In addition to thermal, chemical and photochemical stability, the 2-phenylbenzoxazole fragment exhibits attractive emission properties in the solid state, thus leading to highly photoluminescent materials and sensors.
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Affiliation(s)
- Chantal Carayon
- SPCMIB
- UMR5068
- CNRS-Université de Toulouse III Paul Sabatier
- Toulouse
- France
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Fiedler T, Chen L, Wagner ND, Russell DH, Gladysz JA. Gas and Liquid Phase Diffusivities of Isomeric Metal Complexes Derived from Multifold Ring-Closing Metatheses: Ion Mobility Mass Spectrometry Trumps DOSY NMR. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00249] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tobias Fiedler
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas 77842-3012, United States
| | - Liuxi Chen
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas 77842-3012, United States
| | - Nicole D. Wagner
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas 77842-3012, United States
| | - David H. Russell
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas 77842-3012, United States
| | - John A. Gladysz
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas 77842-3012, United States
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Taura D, Min H, Katan C, Yashima E. Synthesis of a double-stranded spiroborate helicate bearing stilbene units and its photoresponsive behaviour. NEW J CHEM 2015. [DOI: 10.1039/c4nj01669f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The sodium ion-triggered extension and contraction motions along with photo-induced cis–trans isomerisation of a photoresponsive spiroborate-based double-stranded helicate were investigated.
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Affiliation(s)
- Daisuke Taura
- Department of Molecular Design and Engineering
- Graduate School of Engineering
- Nagoya University
- Chikusa-ku
- Japan
| | - Heejun Min
- Department of Molecular Design and Engineering
- Graduate School of Engineering
- Nagoya University
- Chikusa-ku
- Japan
| | - Claudine Katan
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- France
| | - Eiji Yashima
- Department of Molecular Design and Engineering
- Graduate School of Engineering
- Nagoya University
- Chikusa-ku
- Japan
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Martini F, Borsacchi S, Geppi M, Ruggeri G, Pucci A. Understanding the aggregation of bis(benzoxazolyl)stilbene in PLA/PBS blends: a combined spectrofluorimetric, calorimetric and solid state NMR approach. Polym Chem 2014. [DOI: 10.1039/c3py01039b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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