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Jovaišaitė J, Baronas P, Jonusauskas G, Gudeika D, Gruodis A, Gražulevičius JV, Juršėnas S. TICT compounds by design: comparison of two naphthalimide-π-dimethylaniline conjugates of different lengths and ground state geometries. Phys Chem Chem Phys 2023; 25:2411-2419. [PMID: 36598166 DOI: 10.1039/d2cp04250a] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Two new twisted intramolecular charge transfer (TICT) donor-π-acceptor compounds were designed by combining a well-known electron acceptor naphthalimide unit with a classic electron donor dimethylaniline through two types of different rigid linkers. The combined steady-state and time-resolved spectroscopy of molecules in solvents of different polarities in comparison to solid-state solvation experiments of doped polymer matrixes of different polarities allowed distinguishing between solvation and conformation determined processes. The photophysical measurements revealed that non-polar solutions possess high fluorescence quantum yields of up to 70% which is a property of pre-twisted/planar molecules in the excited charge transfer (CT) states. The increase of polarity allows tuning the Stokes shift through all the visible wavelength range up to 8601 cm-1 which is accompanied by a three orders of magnitude drop of fluorescence quantum yields. This is a result of the emerged TICT states as dimethylaniline twists to a perpendicular position against the naphthalimide core. The TICT reaction of molecules enables an additional non-radiative excitation decay channel, which is not present if the twisting is forbidden in a rigid polymer matrix. Transient absorption spectroscopy was employed to visualize the excited state dynamics and to obtain the excited state reaction constants, revealing that TICT may occur from both the Franck-Condon region and the solvated pre-twisted/planar CT states. Both molecules undergo the same photophysical processes, however, a longer linker and thus a higher excited state dipole moment determines the faster excited state reactions.
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Affiliation(s)
- Justina Jovaišaitė
- Institute of Photonics and Nanotechnology, Vilnius University, Saulėtekio Ave. 3, LT-10257 Vilnius, Lithuania.
| | - Paulius Baronas
- Institute of Photonics and Nanotechnology, Vilnius University, Saulėtekio Ave. 3, LT-10257 Vilnius, Lithuania.
| | - Gediminas Jonusauskas
- Laboratoire Ondes et Matiére d'Aquitaine, Bordeaux University, UMR CNRS 5798, 351 cours de la Libération, 33405 Talence, France
| | - Dalius Gudeika
- Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilėnų rd. 19, LT-50254 Kaunas, Lithuania
| | - Alytis Gruodis
- Institute of Chemical Physics, Vilnius University, Saulėtekio Ave. 3, LT-10257 Vilnius, Lithuania
| | - Juozas V Gražulevičius
- Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilėnų rd. 19, LT-50254 Kaunas, Lithuania
| | - Saulius Juršėnas
- Institute of Photonics and Nanotechnology, Vilnius University, Saulėtekio Ave. 3, LT-10257 Vilnius, Lithuania.
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2
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Fluorescent RET-Based Chemosensor Bearing 1,8-Naphthalimide and Styrylpyridine Chromophores for Ratiometric Detection of Hg2+ and Its Bio-Application. BIOSENSORS 2022; 12:bios12090770. [PMID: 36140155 PMCID: PMC9497167 DOI: 10.3390/bios12090770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 09/14/2022] [Accepted: 09/15/2022] [Indexed: 11/17/2022]
Abstract
Dyad compound NI-SP bearing 1,8-naphthalimide (NI) and styrylpyridine (SP) photoactive units, in which the N-phenylazadithia-15-crown-5 ether receptor is linked with the energy donor naphthalimide chromophore, has been evaluated as a ratiometric fluorescent chemosensor for mercury (II) ions in living cells. In an aqueous solution, NI-SP selectively responds to the presence of Hg2+ via the enhancement in the emission intensity of NI due to the inhibition of the photoinduced electron transfer from the receptor to the NI fragment. At the same time, the long wavelength fluorescence band of SP, arising as a result of resonance energy transfer from the excited NI unit, appears to be virtually unchanged upon Hg2+ binding. This allows self-calibration of the optical response. The observed spectral behavior is consistent with the formation of the (NI-SP)·Hg2+ complex (dissociation constant 0.13 ± 0.04 µM). Bio-imaging studies showed that the ratio of fluorescence intensity in the 440–510 nm spectral region to that in the 590–650 nm region increases from 1.1 to 2.8 when cells are exposed to an increasing concentration of mercury (II) ions, thus enabling the detection of intracellular Hg2+ ions and their quantitative analysis in the 0.04–1.65 μM concentration range.
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3
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Photodiagnosis and photodynamic effects of bacteriochlorin-naphthalimide conjugates on tumor cells and mouse model. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2021; 223:112294. [PMID: 34500215 DOI: 10.1016/j.jphotobiol.2021.112294] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 08/13/2021] [Accepted: 08/17/2021] [Indexed: 12/18/2022]
Abstract
Photo-induced cytotoxicity and antitumor activity of a series of dual function agents for photodynamic therapy (PDT) and fluorescent imaging based on bacteriochlorin photosensitizer conjugated with various naphthalimide fluorophores was studied in vitro using murine tumor cells of S37 sarcoma and in vivo on mice bearing murine S37 sarcoma. Upon irradiation at the absorption maximum of the photosensitizer, the activity of conjugates was as high as in the case of individual bacteriochlorin, while an additional excitation of the naphthalimide fragment led to an increase in the PDT efficacy due to resonance energy transfer from the fluorophore to photosensitizer. The fluorescence contrast and specific cytotoxic activity measurements indicate that the conjugate of bacteriochlorin with 3,4-dimethoxestyrene-substituted naphthalimide is the most promising agent for the application as theranostic in PDT.
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Hoang MD, Bodin JB, Savina F, Steinmetz V, Bignon J, Durand P, Clavier G, Méallet-Renault R, Chevalier A. "CinNapht" dyes: a new cinnoline/naphthalimide fused hybrid fluorophore. Synthesis, photo-physical study and use for bio-imaging. RSC Adv 2021; 11:30088-30092. [PMID: 35493990 PMCID: PMC9041350 DOI: 10.1039/d1ra05110e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 08/31/2021] [Indexed: 12/17/2022] Open
Abstract
Six-membered-diaza ring of cinnoline has been fused on naphthalimide dye to give a donor-acceptor system called CinNapht. This red shifted fluorophore, that can be synthesised in gram scale, exhibits a large Stoke shift and a fluorescence quantum yield up to 0.33. It is also characterized by a strong solvatochromic effect from green to red emission as well and can be used for bio-imaging.
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Affiliation(s)
- Minh-Duc Hoang
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles UPR 2301 91198 Gif-sur-Yvette France
| | - Jean-Baptiste Bodin
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay Orsay 91405 France
| | - Farah Savina
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay Orsay 91405 France
| | - Vincent Steinmetz
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles UPR 2301 91198 Gif-sur-Yvette France
| | - Jérôme Bignon
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles UPR 2301 91198 Gif-sur-Yvette France
| | - Philippe Durand
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles UPR 2301 91198 Gif-sur-Yvette France
| | - Gilles Clavier
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM 91190 Gif-sur-Yvette France
| | - Rachel Méallet-Renault
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay Orsay 91405 France
| | - Arnaud Chevalier
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles UPR 2301 91198 Gif-sur-Yvette France
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5
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Panchenko PA, Efremenko AV, Feofanov AV, Ustimova MA, Fedorov YV, Fedorova OA. Ratiometric Detection of Mercury (II) Ions in Living Cells Using Fluorescent Probe Based on Bis(styryl) Dye and Azadithia-15-Crown-5 Ether Receptor. SENSORS 2021; 21:s21020470. [PMID: 33440801 PMCID: PMC7826577 DOI: 10.3390/s21020470] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/02/2021] [Accepted: 01/05/2021] [Indexed: 11/16/2022]
Abstract
Bis(styryl) dye 1 bearing N-phenylazadithia-15-crown-5 ether receptor has been evaluated as a ratiometric fluorescent chemosensor for mercury (II) ions in living cells. In aqueous solution, probe 1 selectively responds to the presence of Hg2+ via the changes in the emission intensity as well as in the emission band shape, which is a result of formation of the complex with 1:1 metal to ligand ratio (dissociation constant 0.56 ± 0.15 µM). The sensing mechanism is based on the interplay between the RET (resonance energy transfer) and ICT (intramolecular charge transfer) interactions occurring upon the UV/Vis (380 or 405 nm) photoexcitation of both styryl chromophores in probe 1. Bio-imaging studies revealed that the yellow (500-600 nm) to red (600-730 nm) fluorescence intensity ratio decreased from 4.4 ± 0.2 to 1.43 ± 0.10 when cells were exposed to increasing concentration of mercury (II) ions enabling ratiometric quantification of intracellular Hg2+ concentration in the 37 nM-1 μM range.
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Affiliation(s)
- Pavel A. Panchenko
- Laboratory of Photoactive Supramolecular systems, A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), 119991 Moscow, Russia; (M.A.U.); (Y.V.F.); (O.A.F.)
- Department of Technology of Fine Organic Synthesis and Chemistry of Dyes, Dmitry Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia
- Correspondence: ; Tel.: +7-905-525-07-93
| | - Anastasija V. Efremenko
- Biological Faculty, Lomonosov Moscow State University, 119992 Moscow, Russia; (A.V.E.); (A.V.F.)
- Laboratory of Optical Microscopy and Spectroscopy, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Sciences, 117997 Moscow, Russia
| | - Alexey V. Feofanov
- Biological Faculty, Lomonosov Moscow State University, 119992 Moscow, Russia; (A.V.E.); (A.V.F.)
- Laboratory of Optical Microscopy and Spectroscopy, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Sciences, 117997 Moscow, Russia
| | - Mariya A. Ustimova
- Laboratory of Photoactive Supramolecular systems, A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), 119991 Moscow, Russia; (M.A.U.); (Y.V.F.); (O.A.F.)
| | - Yuri V. Fedorov
- Laboratory of Photoactive Supramolecular systems, A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), 119991 Moscow, Russia; (M.A.U.); (Y.V.F.); (O.A.F.)
| | - Olga A. Fedorova
- Laboratory of Photoactive Supramolecular systems, A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), 119991 Moscow, Russia; (M.A.U.); (Y.V.F.); (O.A.F.)
- Department of Technology of Fine Organic Synthesis and Chemistry of Dyes, Dmitry Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia
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6
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Fluorescent photochromic complex of 1,8-naphthalimide derivative and benzopyrane containing benzo-18-crown-6 ether. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.112975] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Zakharko MA, Panchenko PA, Zarezin DP, Nenajdenko VG, Pritmov DA, Grin MA, Mironov AF, Fedorova OA. Conjugates of 3,4-dimethoxy-4-styrylnaphthalimide and bacteriochlorin for theranostics in photodynamic therapy. Russ Chem Bull 2020. [DOI: 10.1007/s11172-020-2885-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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8
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Georgiev A, Yordanov D, Dimov D, Zhivkov I, Nazarova D, Weiter M. Azomethine phthalimides fluorescent E→Z photoswitches. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112443] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Effect of linker length on the spectroscopic properties of bacteriochlorin – 1,8-naphthalimide conjugates for fluorescence-guided photodynamic therapy. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112338] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Ito H, Sakai H, Suzuki Y, Kawamata J, Hasobe T. Systematic Control of Structural and Photophysical Properties of π‐Extended Mono‐ and Bis‐BODIPY Derivatives. Chemistry 2019; 26:316-325. [DOI: 10.1002/chem.201904282] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 11/05/2019] [Indexed: 01/31/2023]
Affiliation(s)
- Hiroaki Ito
- Department of Chemistry Faculty of Science and Technology Keio University 3-14-1 Hiyoshi Yokohama Kanagawa 223-8522 Japan
| | - Hayato Sakai
- Department of Chemistry Faculty of Science and Technology Keio University 3-14-1 Hiyoshi Yokohama Kanagawa 223-8522 Japan
| | - Yasutaka Suzuki
- Graduate School of Sciences and Technology for Innovation Yamaguchi University 1677-1 Yoshida Yamaguchi 753-8512 Japan
| | - Jun Kawamata
- Graduate School of Sciences and Technology for Innovation Yamaguchi University 1677-1 Yoshida Yamaguchi 753-8512 Japan
| | - Taku Hasobe
- Department of Chemistry Faculty of Science and Technology Keio University 3-14-1 Hiyoshi Yokohama Kanagawa 223-8522 Japan
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11
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Visible light-controlled NO generation for photoreceptor-mediated plant root growth regulation. Nitric Oxide 2019; 92:34-40. [PMID: 31377229 DOI: 10.1016/j.niox.2019.07.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 07/29/2019] [Accepted: 07/31/2019] [Indexed: 01/05/2023]
Abstract
Nitric oxide (NO) is an essential redox-signaling molecule free radical, contributes a significant role in a diverse range of physiological processes. Photo-triggered NO donors have significant potential compared to other NO donors because it releases NO in the presence of light. Hence, an efficient visible light-triggered NO donor is designed and synthesized by coupling 2,6-dimethyl nitrobenzene moiety at the peri-position of 1, 8-naphthalimide. The NO-releasing ability is validated using various spectroscopic techniques, the photoproduct is characterized, and finally, the NO generation quantum yield is also determined. Furthermore, the photo-generated NO has been employed to Arabidopsis thaliana as a model plant to examine the effect of photoreceptor-mediated NO uptake on plant root growth regulation molecule.
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12
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Modulation of diarylethene fluorescence by photochromic switching and solvent polarity. MENDELEEV COMMUNICATIONS 2019. [DOI: 10.1016/j.mencom.2019.09.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Panchenko PA, Polyakova AS, Fedorov YV, Fedorova OA. Chemoselective detection of Ag+ in purely aqueous solution using fluorescence ‘turn-on’ probe based on crown-containing 4-methoxy-1,8-naphthalimide. MENDELEEV COMMUNICATIONS 2019. [DOI: 10.1016/j.mencom.2019.03.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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14
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Biswas S, Upadhyay N, Kar D, Datta S, Koner AL. Visible light-triggered NO generation from Naphthalimide-based probe for photoreceptor-mediated plant root growth regulation.. [DOI: 10.1101/550004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/19/2023]
Abstract
ABSTRACTAn efficient visible light-triggered nitric oxide (NO) releasing fluorescent molecule is designed and synthesized by coupling 2,6-dimethyl nitrobenzene moiety at the peri-position of 1, 8-naphthalimide through an alkene bond. The NO-releasing ability is investigated in details using various spectroscopic techniques, and the photoproduct was also characterized. Further, the photo-generated NO has been employed to examine the effect of photoreceptor-mediated NO uptake on plant root growth regulation.
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15
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On the Nature of Interplay among Major Flexibility Channels in Molecular Rotors. J CHEM-NY 2019. [DOI: 10.1155/2019/8359527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
As a part of our interest in the excited-state dynamics of flexible materials, we have undertaken a theoretical investigation to the photo-induced reactions of 2-[4-(dimethylamino)benzylidene]malononitrile (BMN) by a combination of the density functional theory, its extended time-dependent (TD-DFT) single reference, and ab initio molecular dynamic (MD) simulations. The results showed that double-bond twisting and the neighbor single-bond twisting togetherness in the excited singlet state is the most important nonradiative deactivation channel to the ground state. Double- and single-bond twisting insert clear intersections among the potential energy surfaces of the singlet states (especially S1/S0) leading to fluorescence quenching. Furthermore, effects of molecular dynamic simulations on molecular properties in the femtosecond to picosecond time domain are studied to validate the results. In agreement with the experimental results, the findings conclude the existence of a flexible geometry-dependent single emission band. Such a study may give information on how the molecule could be externally modified/fixed to yield a desired effect, i.e., more fluorescence or more nonradiative decay.
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16
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Mohbiya DR, Mallah RR, Sekar N. Influence of electron donors in fluorescent NLOphoric D-π-A derivatives with acenaphthene rotor: Photophysical, viscosity, and TD-DFT studies. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.05.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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17
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Gopikrishna P, Meher N, Iyer PK. Functional 1,8-Naphthalimide AIE/AIEEgens: Recent Advances and Prospects. ACS APPLIED MATERIALS & INTERFACES 2018; 10:12081-12111. [PMID: 29171747 DOI: 10.1021/acsami.7b14473] [Citation(s) in RCA: 160] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
This comprehensive review surveys the up-to-date development of aggregation-induced emission/aggregation-induced emission enhancement (AIE/AIEE) active naphthalimide (NI)-based smart materials with potential for wide and real-world applications and that serves as a highly versatile building block with tunable absorption and emission in the complete visible region. The review article commences with a precise description of the importance of NI moiety and its several restricted area of applications owing to its aggregation caused quenching (ACQ) properties, followed by the discovery and importance of AIE/AIEE-active NIs. The introduction section tracked an overview of the state of the art in NI luminogens in multiple applications. It also includes a few mechanistic studies on the structure-property correlation of NIs and provides more insights into the condensed-state photophysical properties of small aggregation-prone systems. The review aims to ultimately accomplish current and forthcoming views comprising the use of the NIs for the detection of biologically active molecules, such as amino acids and proteins, recognition of toxic analytes, fabrication of light emitting diodes, and their potential in therapeutics and diagnostics.
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18
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Panchenko PA, Grin MA, Fedorova OA, Zakharko MA, Pritmov DA, Mironov AF, Arkhipova AN, Fedorov YV, Jonusauskas G, Yakubovskaya RI, Morozova NB, Ignatova AA, Feofanov AV. A novel bacteriochlorin-styrylnaphthalimide conjugate for simultaneous photodynamic therapy and fluorescence imaging. Phys Chem Chem Phys 2018; 19:30195-30206. [PMID: 29105711 DOI: 10.1039/c7cp04449f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Propargyl-152,173-dimethoxy-131-amide of bacteriochlorin e (BChl) and a 4-(4-N,N-dimethylaminostyryl)-N-alkyl-1,8-naphthalimide bearing azide group in the N-alkyl fragment were conjugated by the copper(i)-catalyzed 1,3-dipolar cycloaddition to produce a novel dyad compound BChl-NI for anticancer photodynamic therapy (PDT) combining the modalities of a photosensitizer (PS) and a fluorescence imaging agent. A precise photophysical investigation of the conjugate in solution using steady-state and time-resolved optical spectroscopy revealed that the presence of the naphthalimide (NI) fragment does not decrease the photosensitizing ability of the bacteriochlorin (BChl) core as compared with BChl; however, the fluorescence of naphthalimide is completely quenched due to resonance energy transfer (RET) to BChl. It has been shown that the BChl-NI conjugate penetrates into human lung adenocarcinoma A549 cells, and accumulates in the cytoplasm where it has a mixed granular-diffuse distribution. Both NI and BChl fluorescence in vitro provides registration of bright images showing perfectly intracellular distribution of BChl-NI. The ability of NI to emit light upon excitation in imaging experiments has been found to be due to hampering of RET as a result of photodestruction of the energy acceptor BChl unit. Phototoxicity studies have shown that the BChl-NI conjugate is not toxic for A549 cells at tested concentrations (<8 μM) without light-induced activation. At the same time, the concentration-dependent killing of cells is observed upon the excitation of the bacteriochlorin moiety with red light that occurs due to reactive oxygen species formation. The presented data demonstrate that the BChl-NI conjugate is a promissing dual function agent for cancer diagnostics and therapy.
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Affiliation(s)
- Pavel A Panchenko
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 119991, Vavilova str. 28, Moscow, Russia.
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19
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Szakács Z, Rousseva S, Bojtár M, Hessz D, Bitter I, Kállay M, Hilbers M, Zhang H, Kubinyi M. Experimental evidence of TICT state in 4-piperidinyl-1,8-naphthalimide – a kinetic and mechanistic study. Phys Chem Chem Phys 2018; 20:10155-10164. [DOI: 10.1039/c7cp08555a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The excited state processes in N-propyl-4-piperidinyl-1,8-naphthalimide have been studied by measuring its fluorescence spectra and decay curves in solvents of different polarity and viscosity and also in a frozen solvent glass.
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Affiliation(s)
- Zoltán Szakács
- Department of Physical Chemistry and Materials Science
- Budapest University of Technology and Economics
- 1521 Budapest
- Hungary
| | - Sylvia Rousseva
- Department of Physical Chemistry and Materials Science
- Budapest University of Technology and Economics
- 1521 Budapest
- Hungary
| | - Márton Bojtár
- Department of Organic Chemistry and Technology
- Budapest University of Technology and Economics
- 1521 Budapest
- Hungary
| | - Dóra Hessz
- Institute of Materials and Environmental Chemistry
- Research Center for Natural Sciences
- Hungarian Academy of Sciences
- 1519 Budapest
- Hungary
| | - István Bitter
- Department of Organic Chemistry and Technology
- Budapest University of Technology and Economics
- 1521 Budapest
- Hungary
| | - Mihály Kállay
- MTA-BME Lendület Quantum Chemistry Research Group
- Department of Physical Chemistry and Materials Science
- Budapest University of Technology and Economics
- 1521 Budapest
- Hungary
| | - Michiel Hilbers
- Van't Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1090 GD Amsterdam
- The Netherlands
| | - Hong Zhang
- Van't Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1090 GD Amsterdam
- The Netherlands
| | - Miklós Kubinyi
- Department of Physical Chemistry and Materials Science
- Budapest University of Technology and Economics
- 1521 Budapest
- Hungary
- Institute of Materials and Environmental Chemistry
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20
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Wiedbrauk S, Maerz B, Samoylova E, Mayer P, Zinth W, Dube H. Ingredients to TICT Formation in Donor Substituted Hemithioindigo. J Phys Chem Lett 2017; 8:1585-1592. [PMID: 28304176 DOI: 10.1021/acs.jpclett.7b00371] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Twisted intramolecular charge transfer (TICT) formation in hemithioindigo photoswitches has recently been reported and constitutes a second deexcitation pathway complementary to photoisomerization. Typically, this behavior is not found for this type of photoswitches, and it takes special geometric and electronic conditions to realize it. Here we present a systematic study that identifies the molecular preconditions leading to TICT formation in donor substituted hemithioindigo, which can thus serve as a frame of reference for other photoswitching systems. By varying the substitution pattern and providing an in-depth physical characterization including time-resolved and quantum yield measurements, we found that neither ground-state pretwisting along the rotatable single bond nor the introduction of strong push-pull character across the photoisomerizable double bond alone leads to formation of TICT states. Only the combination of both ingredients produces light-induced TICT behavior in polar solvents.
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Affiliation(s)
- Sandra Wiedbrauk
- Department für Chemie and Munich Center for Integrated Protein Science CIPSM, Ludwig-Maximilians-Universität München , D-81377 Munich, Germany
| | - Benjamin Maerz
- Institut für BioMolekulare Optik, Fakultät für Physik and Munich Center for Integrated Protein Science CIPSM, Ludwig-Maximilians-Universität München , D-80538 Munich, Germany
| | - Elena Samoylova
- Institut für BioMolekulare Optik, Fakultät für Physik and Munich Center for Integrated Protein Science CIPSM, Ludwig-Maximilians-Universität München , D-80538 Munich, Germany
| | - Peter Mayer
- Department für Chemie and Munich Center for Integrated Protein Science CIPSM, Ludwig-Maximilians-Universität München , D-81377 Munich, Germany
| | - Wolfgang Zinth
- Institut für BioMolekulare Optik, Fakultät für Physik and Munich Center for Integrated Protein Science CIPSM, Ludwig-Maximilians-Universität München , D-80538 Munich, Germany
| | - Henry Dube
- Department für Chemie and Munich Center for Integrated Protein Science CIPSM, Ludwig-Maximilians-Universität München , D-81377 Munich, Germany
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