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Le Garrec S, Martins-Bessa D, Wolff M, Delavaux-Nicot B, Mallet-Ladeira S, Serpentini CL, Benoist E, Bedos-Belval F, Fery-Forgues S. Dinuclear tricarbonylrhenium(I) complexes: impact of regioisomerism on the photoluminescence properties. Dalton Trans 2024. [PMID: 39258561 DOI: 10.1039/d4dt01907e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2024]
Abstract
Dinuclear Re(I) complexes have proportionally been much less studied than mononuclear analogues. In particular, very little information is available about their solid-state emission properties. In this work, two structural isomers of dinuclear complexes (Bi-Re-metaPhe and Bi-Re-paraPhe), which differ by the relative position of the coordination spheres on a central phenyl ring, were synthesized and compared with each other and with the parent mononuclear compound (Mono-Re-Phe), from a theoretical and experimental point of view. In solution, the electronic, electrochemical and spectroscopic properties of the dinuclear complexes were almost identical, and rather close to those of the monomer. In the solid state, the photoluminescence (PL) efficiency of dimers was not higher than that of the monomer, but a clear mechanoresponsive luminescence (MRL) effect appeared only for the former ones. The positional isomerism influenced the amplitude of this effect, as well as the aggregation-induced emission (AIE) properties in a water-acetonitrile mixture. This study reveals the importance of positional isomerism to modulate the emission properties in the solid state. It also shows the advantage of dinuclear structures to access new MRL-active materials.
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Affiliation(s)
- Stéphen Le Garrec
- SPCMIB, CNRS UMR 5068, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France.
| | - David Martins-Bessa
- SPCMIB, CNRS UMR 5068, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France.
| | - Mariusz Wolff
- Institut für Funktionelle Materialien und Katalyse, Universität Wien, Währinger Straße 38-42, 1090 Wien, Austria
- Institute of Chemistry, University of Silesia in Katowice, Szkolna 9th Street, 40-006 Katowice, Poland
| | - Béatrice Delavaux-Nicot
- Laboratoire de Chimie de Coordination, CNRS (UPR 8241), Université de Toulouse (UPS, INPT), 205 route de Narbonne, 31077 Toulouse Cedex 4, France
| | - Sonia Mallet-Ladeira
- Service Diffraction des Rayons X, Institut de Chimie de Toulouse, ICT-UAR 2599, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France
| | - Charles-Louis Serpentini
- Laboratoire SOFTMAT, CNRS UMR 5623, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France
| | - Eric Benoist
- SPCMIB, CNRS UMR 5068, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France.
| | - Florence Bedos-Belval
- SPCMIB, CNRS UMR 5068, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France.
| | - Suzanne Fery-Forgues
- SPCMIB, CNRS UMR 5068, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France.
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Khatun MN, Nandy S, Roy H, Ghosh SS, Kumar S, Iyer PK. Sulphur-atom positional engineering in perylenimide: structure-property relationships and H-aggregation directed type-I photodynamic therapy. Chem Sci 2024; 15:9298-9317. [PMID: 38903228 PMCID: PMC11186329 DOI: 10.1039/d4sc01180e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 05/10/2024] [Indexed: 06/22/2024] Open
Abstract
An innovative design strategy of placing sulfur (S)-atoms within the pendant functional groups and at carbonyl positions in conventional perylenimide (PNI-O) has been demonstrated to investigate the condensed state structure-property relationship and potential photodynamic therapy (PDT) application. Incorporation of simply S-atoms at the peri-functionalized perylenimide (RPNI-O) leads to an aggregation-induced enhanced emission luminogen (AIEEgen), 2-hexyl-8-(thianthren-1-yl)-1H-benzo[5,10]anthra[2,1,9-def]isoquinoline-1,3(2H)-dione (API), which achieves a remarkable photoluminescence quantum yield (Φ PL) of 0.85 in aqueous environments and established novel AIE mechanisms. Additionally, substitution of the S-atom at the carbonyl position in RPNI-O leads to thioperylenimides (RPNI-S): 2-hexyl-8-phenyl-1H-benzo[5,10]anthra[2,1,9-def]isoquinoline-1,3(2H)-dithione (PPIS), 8-([2,2'-bithiophen]-5-yl)-2-hexyl-1H-benzo[5,10]anthra[2,1,9-def]isoquinoline-1,3(2H)-dithione (THPIS), and 2-hexyl-8-(thianthren-1-yl)-1H-benzo[5,10]anthra[2,1,9-def]isoquinoline-1,3(2H)-dithion (APIS), with distinct photophysical properties (enlarged spin-orbit coupling (SOC) and Φ PL ≈ 0.00), and developed diverse potent photosensitizers (PSs). The present work provides a novel SOC enhancement mechanism via pronounced H-aggregation. Surprisingly, the lowest singlet oxygen quantum yield (Φ Δ) and theoretical calculation suggest the specific type-I PDT for RPNI-S. Interestingly, RPNI-S efficiently produces superoxide (O2˙-) due to its remarkably lower Gibbs free energy (ΔG) values (THPIS: -40.83 kcal mol-1). The non-toxic and heavy-atom free very specific thio-based PPIS and THPIS PSs showed selective and efficient PDT under normoxia, as a rare example.
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Affiliation(s)
- Mst Nasima Khatun
- Department of Chemistry, Indian Institute of Technology Guwahati Guwahati 781039 Assam India +91-3612582349
| | - Satyendu Nandy
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati Guwahati 781039 Assam India
| | - Hirakjyoti Roy
- Centre for Nanotechnology, Indian Institute of Technology Guwahati Guwahati 781039 Assam India
| | - Siddhartha Sankar Ghosh
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati Guwahati 781039 Assam India
- Centre for Nanotechnology, Indian Institute of Technology Guwahati Guwahati 781039 Assam India
| | - Sachin Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati Guwahati 781039 Assam India
| | - Parameswar Krishnan Iyer
- Department of Chemistry, Indian Institute of Technology Guwahati Guwahati 781039 Assam India +91-3612582349
- Centre for Nanotechnology, Indian Institute of Technology Guwahati Guwahati 781039 Assam India
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Nurnabi M, Gurusamy S, Wu JY, Lee CC, Sathiyendiran M, Huang SM, Chang CH, Chao I, Lee GH, Peng SM, Sathish V, Thanasekaran P, Lu KL. Aggregation-induced emission enhancement (AIEE) of tetrarhenium(I) metallacycles and their application as luminescent sensors for nitroaromatics and antibiotics. Dalton Trans 2023; 52:1939-1949. [PMID: 36691828 DOI: 10.1039/d2dt03408e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The self-assembly of tetrarhenium metallacycles [{Re(CO)3}2(μ-dhaq)(μ-N-N)]2 (3a, N-N = 1,3-bis(1-butylbenzimidazol-2-yl)benzene; 3b, N-N = 1,3-bis(1-octylbenzimidazol-2-yl)benzene), (H2-dhaq = 1,4-dihydroxy-9,10-anthraquinone) and [{Re(CO)3}2(μ-thaq)(μ-N-N)]2 (4, N-N = 1,3-bis(1-butylbenzimidazol-2-yl)benzene), (H2-thaq = 1,2,4-trihydroxy-9,10-anthraquinone) under solvothermal conditions is described. The metallacycles 3a,b and 4 underwent aggregation-induced emission enhancement (AIEE) in THF upon the incremental addition of water. TEM images revealed that metallacycle 3a in a 60% aqueous THF solution formed rectangular aggregates with a wide size distribution, while a 90% aqueous THF solution resulted in the formation of a mixture of nanorods and amorphous aggregates due to rapid and abrupt aggregation. UV-vis and emission spectral profiles supported the formation of nanoaggregates of metallacycles 3a,b and 4 upon the gradual addition of water to a THF solution containing metallacycles. Further studies indicated that these nanoaggregates were excellent probes for the sensitive and selective detection of nitro group containing picric acid (PA) derivatives as well as antibiotics.
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Affiliation(s)
| | - Shunmugasundaram Gurusamy
- PG and Research Department of Chemistry, V. O. Chidambaram College, Tuticorin - 628 008, Tamil Nadu, India
| | - Jing-Yun Wu
- Department of Applied Chemistry, National Chi Nan University, Nantou 545, Taiwan
| | - Chung-Chou Lee
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan.
| | | | | | - Che-Hao Chang
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan.
| | - Ito Chao
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan.
| | - Gene-Hsiang Lee
- Department of Chemistry, National Taiwan University, Taipei 107, Taiwan
| | - Shie-Ming Peng
- Department of Chemistry, National Taiwan University, Taipei 107, Taiwan
| | - Veerasamy Sathish
- Department of Chemistry, Bannari Amman Institute of Technology, Sathyamangalam - 638 401, India
| | | | - Kuang-Lieh Lu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan. .,Department of Chemistry, Fu Jen Catholic University, New Taipei City 242, Taiwan
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Kwak J, Woo J, Park S, Lim MH. Rational design of photoactivatable metal complexes to target and modulate amyloid-β peptides. J Inorg Biochem 2023; 238:112053. [PMID: 36347209 DOI: 10.1016/j.jinorgbio.2022.112053] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/25/2022] [Accepted: 10/25/2022] [Indexed: 11/08/2022]
Abstract
The accumulation of amyloid-β (Aβ) aggregates is found in the brains of Alzheimer's disease patients. Thus, numerous efforts have been made to develop chemical reagents capable of targeting Aβ peptides and controlling their aggregation. In particular, tunable coordination and photophysical properties of transition metal complexes, with variable oxidation and spin states on the metal centers, can be utilized to probe Aβ aggregates and alter their aggregation profiles. In this review, we illustrate some rational strategies for designing photoactivatable metal complexes as chemical sensors for Aβ peptides or modulators against their aggregation pathways, with some examples.
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Affiliation(s)
- Jimin Kwak
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Junhyeok Woo
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Seongmin Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Mi Hee Lim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
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5
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Zharskaia NA, Solomatina AI, Liao YC, Galenko EE, Khlebnikov AF, Chou PT, Chelushkin PS, Tunik SP. Aggregation-Induced Ignition of Near-Infrared Phosphorescence of Non-Symmetric [Pt(C^N*N'^C')] Complex in Poly(caprolactone)-based Block Copolymer Micelles: Evaluating the Alternative Design of Near-Infrared Oxygen Biosensors. BIOSENSORS 2022; 12:695. [PMID: 36140080 PMCID: PMC9496585 DOI: 10.3390/bios12090695] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/13/2022] [Accepted: 08/24/2022] [Indexed: 02/03/2023]
Abstract
In the present work, we described the preparation and characterization of the micelles based on amphiphilic poly(ε-caprolactone-block-ethylene glycol) block copolymer (PCL-b-PEG) loaded with non-symmetric [Pt(C^N*N'^C')] complex (Pt1) (where C^N*N'^C': 6-(phenyl(6-(thiophene-2-yl)pyridin-2-yl)amino)-2-(tyophene-2-yl)nicotinate). The obtained nanospecies displayed the ignition of near-infrared (NIR) phosphorescence upon an increase in the content of the platinum complexes in the micelles, which acted as the major emission component at 12 wt.% of Pt1. Emergence of the NIR band at 780 nm was also accompanied by a 3-fold growth of the quantum yield and an increase in the two-photon absorption cross-section that reached the value of 450 GM. Both effects are believed to be the result of progressive platinum complex aggregation inside hydrophobic poly(caprolactone) cores of block copolymer micelles, which has been ascribed to aggregation induced emission (AIE). The resulting phosphorescent (Pt1@PCL-b-PEG) micelles demonstrated pronounced sensitivity towards molecular oxygen, the key intracellular bioanalyte. The detailed photophysical analysis of the AIE phenomena revealed that the NIR emission most probably occurred due to the excimeric excited state of the 3MMLCT character. Evaluation of the Pt1@PCL-b-PEG efficacy as a lifetime intracellular oxygen biosensor carried out in CHO-K1 live cells demonstrated the linear response of the probe emission lifetime towards this analyte accompanied by a pronounced influence of serum albumin on the lifetime response. Nevertheless, Pt1@PCL-b-PEG can serve as a semi-quantitative lifetime oxygen nanosensor. The key result of this study consists of the demonstration of an alternative approach for the preparation of NIR biosensors by taking advantage of in situ generation of NIR emission due to the nanoconfined aggregation of Pt (II) complexes inside the micellar nanocarriers.
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Affiliation(s)
- Nina A. Zharskaia
- Institute of Chemistry, St. Petersburg State University, Universitetskii Av., 26, 198504 St. Petersburg, Russia
| | - Anastasia I. Solomatina
- Institute of Chemistry, St. Petersburg State University, Universitetskii Av., 26, 198504 St. Petersburg, Russia
| | - Yu-Chan Liao
- Department of Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei 10617, Taiwan
| | - Ekaterina E. Galenko
- Institute of Chemistry, St. Petersburg State University, Universitetskii Av., 26, 198504 St. Petersburg, Russia
| | - Alexander F. Khlebnikov
- Institute of Chemistry, St. Petersburg State University, Universitetskii Av., 26, 198504 St. Petersburg, Russia
| | - Pi-Tai Chou
- Department of Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei 10617, Taiwan
| | - Pavel S. Chelushkin
- Institute of Chemistry, St. Petersburg State University, Universitetskii Av., 26, 198504 St. Petersburg, Russia
| | - Sergey P. Tunik
- Institute of Chemistry, St. Petersburg State University, Universitetskii Av., 26, 198504 St. Petersburg, Russia
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6
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Bhol M, Shankar B, Sathiyendiran M. Rhenium(I)-Based Heteroleptic Pentagonal Toroid-Shaped Metallocavitands: Self-Assembly and Molecular Recognition Studies. Inorg Chem 2022; 61:11497-11508. [PMID: 35820114 DOI: 10.1021/acs.inorgchem.2c02061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A family of neutral, heteroleptic, dinuclear M2LL'-type pentagonal toroid-shaped metallomacrocycles (1-8) were synthesized using flexible ditopic N donors (Ln = L1-L2), rigid bis-chelating ligands (H2-L' = H2-E), and Re2(CO)10 in a one-pot solvothermal self-assembly approach. The ligands and the metallomacrocycles were characterized using ATR-IR, electrospray ionization mass spectrometry, nuclear magnetic resonance, ultraviolet-visible, and emission spectroscopy methods. The molecular structures of 1, 2, 4, 6, and 7 were confirmed by an X-ray diffraction study and are similar to those of calix[5]arene. The cyclic inner cavities of the metallomacrocycles accommodate toluene/mesitylene/acetone/chlorobenzene as guest molecules that are stabilized by cumulative C-H···π and π···π interactions with the cyclic framework of metallomacrocycle. The photophysical properties of the ligands and the metallomacrocycles were studied. The host-guest recognition properties of metallocavitands 1, 2, 7, and 8 as a model host with phenol and nitrobenzene derivatives as guest molecules were studied by emission spectroscopy methods.
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Affiliation(s)
- Mamina Bhol
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
| | - Bhaskaran Shankar
- Department of Chemistry, Thiagarajar College of Engineering, Madurai 625015, India
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7
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Ramdass A, Sathish V, Thanasekaran P. AIE or AIE(P)E-active transition metal complexes for highly sensitive detection of nitroaromatic explosives. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100337] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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8
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Singh S, Verma A, Saha S. Achieving AIE from ACQ in positional isomeric triarylmethanes. NEW J CHEM 2022. [DOI: 10.1039/d2nj00148a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This report demonstrate that the usual ‘aggregation caused quenching’ (ACQ) can be overcome by a change in the substitution position in naphthalene derivatives, leading to the much desired ‘aggregation induced emission’ (AIE).
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Affiliation(s)
- Soumya Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Abhineet Verma
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Satyen Saha
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India
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Poirot A, Vanucci-Bacqué C, Delavaux-Nicot B, Leygue N, Saffon-Merceron N, Alary F, Bedos-Belval F, Benoist E, Fery-Forgues S. Phenyl-pyta-tricarbonylrhenium(I) complexes: combining a simplified structure and steric hindrance to modulate the photoluminescence properties. Dalton Trans 2021; 50:13686-13698. [PMID: 34523629 DOI: 10.1039/d1dt02161c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Strongly luminescent tricarbonylrhenium(I) complexes are promising candidates in the field of optical materials. In this study, three new complexes bearing a 3-(2-pyridyl)-1,2,4-triazole (pyta) bidentate ligand with an appended phenyl group were obtained in very good yields owing to an optimized synthetic procedure. The first member of this series, i.e. complex 1, was compared with the previously studied complex RePBO to understand the influence of the fluorescent benzoxazole unit grafted on the phenyl ring. Then, to gauge the effect of steric hindrance on the luminescence properties, the phenyl group of complex 1 was substituted in the para position by a bulky tert-butyl group or an adamantyl moiety, affording complexes 2 and 3, respectively. The results of theoretical calculations indicated that these complexes were quite similar from an electronic point of view, as evidenced by the electrochemical study. In dichloromethane solution, under excitation in the UV range, all the complexes emitted weak phosphorescence in the red region. In the solid state, they could be excited in the blue region of the visible spectrum and they emitted strong yellow light. The photoluminescence quantum yield was markedly increased with raising the size of the substituent, passing from 0.42 for 1 to 0.59 for 3. The latter complex also exhibited clear waveguiding properties, unprecedented for rhenium complexes. From this point of view, these easy-synthesized and spectroscopically attractive complexes constitute a new generation of emitters for use in imaging applications and functional materials. However, the comparison with RePBO showed that the presence of the benzoxazole group leads to unsurpassed mechanoresponsive luminescence (MRL) properties, due to the involvement of a unique photophysical mechanism that takes place only in this type of complex.
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Affiliation(s)
- Alexandre Poirot
- SPCMIB, CNRS UMR 5068, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France.
| | - Corinne Vanucci-Bacqué
- SPCMIB, CNRS UMR 5068, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France.
| | - Béatrice Delavaux-Nicot
- Laboratoire de Chimie de Coordination, CNRS (UPR 8241), Université de Toulouse (UPS, INPT), 205 route de Narbonne, 31077 Toulouse Cedex 4, France
| | - Nadine Leygue
- SPCMIB, CNRS UMR 5068, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France.
| | - Nathalie Saffon-Merceron
- Service Diffraction des Rayons X, Institut de Chimie de Toulouse, ICT- UAR 2599, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France
| | - Fabienne Alary
- Laboratoire de Chimie et Physique Quantiques (LCPQ), CNRS UMR 5626, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France
| | - Florence Bedos-Belval
- SPCMIB, CNRS UMR 5068, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France.
| | - Eric Benoist
- SPCMIB, CNRS UMR 5068, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France.
| | - Suzanne Fery-Forgues
- SPCMIB, CNRS UMR 5068, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France.
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Mukherjee A, Bhattacharya S, Chakravarty M. An unprecedented pyridine-based dinuclear mixed-valent Re I/VII oxo-bridged complex: a solvatochromic and AIE-active probe for nanomolar detection of picric acid and trinitrotoluene. Dalton Trans 2021; 50:9144-9157. [PMID: 34115088 DOI: 10.1039/d1dt01002f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper describes the synthesis of an unprecedented oxo-bridged rheniumI/VII (Re) complex by treating Re2(CO)10 with a pyridyl-linked anthracene-based twisted π-conjugated ligand. The molecular structures of both the ligand and the complex are determined by analyzing IR, NMR, and HR-MS spectra and unequivocally determined using single-crystal X-ray diffraction studies. Unlike previous observations, the complexation occurs uniquely to yield an unprecedented oxo-bridged ReI/VII complex. Such a complex is uncommon, and in most cases, Re(vii) appears as the ReO4- counter ion. The aggregation-induced emission (AIE) feature could have been achieved from this conformationally twisted ligand, but the emission of the ligand was quenched in the aggregated state. The complex exhibited solvatofluorochromic properties with a faint emission. The emission intensity significantly (∼6 times) increased in DMF after the addition of a water fraction of 90%, resulting in a bright orange emission. The AIE is mainly caused by restricted intramolecular rotation (RIR) and is supported by the polarity and viscosity effects. The nanoaggregate formation is captured by SEM, and DLS studies were used to determine the average particle size. After the complexation, the ligand becomes more rigid, and the RIR effect becomes prominent facilitating the AIE effect. The electron-rich aggregate's intense orange emission was used for the selective and sensitive detection of picric acid (PA) and 2,4,6-trinitrotoluene (TNT) at nanomolar levels amongst other nitroaromatics through emission quenching. The detailed mechanistic studies reveal the active role of dynamic quenching and complementary photo-induced electron transfer between the probe and TNT or PA. The easy electron transfer process from the electron-rich to the electron-poor system is confirmed by calculating the lowest unoccupied molecular orbital energy of the associated levels. The application is further extended for on-site PA and TNT detection by permeating the probe on a paper and detected at 10-3 M concentration with the naked eye. The PA/TNT detection efficiency is also confirmed by mixing PA or TNT with soil.
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Affiliation(s)
- Atasi Mukherjee
- Department of Chemistry, BITS-Pilani Hyderabad Campus, Hyderabad-500078, India.
| | | | - Manab Chakravarty
- Department of Chemistry, BITS-Pilani Hyderabad Campus, Hyderabad-500078, India.
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Babu E, Bhuvaneswari J, Rajakumar K, Sathish V, Thanasekaran P. Non-conventional photoactive transition metal complexes that mediated sensing and inhibition of amyloidogenic aggregates. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213612] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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12
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Self-association process of tetracycline antibiotic in different aqueous solutions: a joint experimental study and molecular dynamics simulation. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2020. [DOI: 10.1007/s13738-020-01977-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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13
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Alam P, Climent C, Alemany P, Laskar IR. “Aggregation-induced emission” of transition metal compounds: Design, mechanistic insights, and applications. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2019. [DOI: 10.1016/j.jphotochemrev.2019.100317] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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14
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Wang J, Poirot A, Delavaux-Nicot B, Wolff M, Mallet-Ladeira S, Calupitan JP, Allain C, Benoist E, Fery-Forgues S. Optimization of aggregation-induced phosphorescence enhancement in mononuclear tricarbonyl rhenium(i) complexes: the influence of steric hindrance and isomerism. Dalton Trans 2019; 48:15906-15916. [PMID: 31441474 DOI: 10.1039/c9dt02786f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
In order to improve the remarkable performance of a mononuclear tricarbonyl rhenium(i) complex (ReL1) that exhibits rare aggregation-induced phosphorescence enhancement (AIPE) behavior, two new complexes (ReL3 and ReL4) were prepared and investigated. They incorporate a 2-pyridyl-1,2,4-triazole (pyta) ligand connected to a 2-phenylbenzoxazole (PBO) moiety. Complex ReL3 differs from ReL1 by the presence of a bulky tert-butyl substituent, and ReL4 is an isomer where the PBO group is linked to the pyta ligand by its phenyl group. Theoretical calculations were in congruence with electrochemical and spectroscopic properties in solutions. Both new compounds exhibited strong AIPE and much better solid-state emission efficiency than ReL1, with photoluminescence quantum yields up to 55% for ReL4. Crystallographic data indicate that this increase in emission efficiency is due to optimum packing that prevents quenching. This work shows that minor structural changes may have major effects upon the solid-state spectroscopic properties and it provides a rational basis for accessing AIPE-active strongly emissive rhenium(i) complexes.
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Affiliation(s)
- Jinhui Wang
- SPCMIB, CNRS UMR5068, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France. and Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, China and State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Biology, The Graduate School at Shenzhen, Tsinghua University, Shenzhen, Guangdong 518055, PR China
| | - Alexandre Poirot
- SPCMIB, CNRS UMR5068, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France.
| | - Béatrice Delavaux-Nicot
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France and LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
| | - Mariusz Wolff
- Institute of Chemistry, Department of Crystallography, University of Silesia, 9th Szkolna St., 40-006 Katowice, Poland
| | - Sonia Mallet-Ladeira
- Service commun RX, Institut de Chimie de Toulouse, ICT- FR2599, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France
| | - Jan Patrick Calupitan
- Laboratoire PPSM, CNRS UMR 8531, ENS Paris-Saclay, 61 avenue du Président Wilson, F-91230 Cachan, France
| | - Clémence Allain
- Laboratoire PPSM, CNRS UMR 8531, ENS Paris-Saclay, 61 avenue du Président Wilson, F-91230 Cachan, France
| | - Eric Benoist
- SPCMIB, CNRS UMR5068, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France.
| | - Suzanne Fery-Forgues
- SPCMIB, CNRS UMR5068, Université de Toulouse III Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France.
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15
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Sathish V, Krishnan MM, Velayudham M, Thanasekaran P, Lu KL, Rajagopal S. Host-guest interaction studies of polycyclic aromatic hydrocarbons (PAHs) in alkoxy bridged binuclear rhenium (I) complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 222:117160. [PMID: 31176159 DOI: 10.1016/j.saa.2019.117160] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 05/23/2019] [Accepted: 05/25/2019] [Indexed: 06/09/2023]
Abstract
The interaction of two neutral alkoxy bridged binuclear rhenium(I) complexes, 1 and 2 [{Re(CO)3(1,4-NVP)}2(μ2-OR)2] (1, R = C4H9; 2, R = C10H21; 1,4-NVP = 4-(1-naphthylvinyl)pyridine] with polycyclic aromatic hydrocarbons (PAH) is investigated. UV-vis absorption, emission, 1H NMR spectral titrations, TCSPC lifetime studies and DFT theoretical calculations were carried out to examine the binding responses of complexes 1 and 2 with various PAHs such as pyrene, naphthalene, anthracene and phenanthrene. The UV-Vis absorption spectra showed an increase in absorbance of the metal-to ligand charge-transfer (MLCT) and ligand centered (LC) bands upon addition of various PAH molecules to 1 and 2, whereas the emission behavior was found to show emission quenching, which might occur through energy transfer pathway. The binding constants (K) of complexes 1 and 2 for various PAHs are found to be in the order of 104 M-1 with a 1:1 binding mode, as determined from UV-vis absorption and emission spectral titration studies. 1H NMR spectral studies show that the chemical shifts of pyrene guest and the 1,4-NVP moiety of 2 are shifted up-field, whilst the alkoxy protons do not show any appreciable change in their chemical shifts. It is believed that the open cavities present in the Re(I) complexes may lead to the recognition of PAHs via CH···π interaction.
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Affiliation(s)
- Veerasamy Sathish
- Department of Chemistry, Bannari Amman Institute of Technology, Sathyamangalam 638 401, India
| | - Mani Murali Krishnan
- Department of Chemistry, Bannari Amman Institute of Technology, Sathyamangalam 638 401, India
| | - Murugesan Velayudham
- Department of Chemistry, Thiagarajar College of Engineering, Madurai 625 015, India
| | | | - Kuang-Lieh Lu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan.
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16
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Singh VD, Dwivedi BK, Paitandi RP, Kumar Y, Pandey DS. Effect of substituents on photophysical and aggregation behaviour in quinoline based bis-terpyridine Zn(II) complexes. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.11.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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17
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Kandel S, Sathish V, Mathivathanan L, Morozov AN, Mebel AM, Raptis RG. Aggregation induced emission enhancement (AIEE) of tripodal pyrazole derivatives for sensing of nitroaromatics and vapor phase detection of picric acid. NEW J CHEM 2019. [DOI: 10.1039/c9nj00166b] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Organosoluble tris-pyrazole compounds aggregate in organic/aqueous solvent mixtures, showing aggregation-induced emission enhancement (AIEE), the latter being quenched by picric acid.
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Affiliation(s)
- Shambhu Kandel
- Department of Chemistry & Biochemistry and the Biomolecular Sciences Institute
- Florida International University
- Miami
- USA
| | - Veerasamy Sathish
- Department of Chemistry & Biochemistry and the Biomolecular Sciences Institute
- Florida International University
- Miami
- USA
- Department of Chemistry
| | - Logesh Mathivathanan
- Department of Chemistry & Biochemistry and the Biomolecular Sciences Institute
- Florida International University
- Miami
- USA
| | - Alexander N. Morozov
- Department of Chemistry & Biochemistry and the Biomolecular Sciences Institute
- Florida International University
- Miami
- USA
| | - Alexander M. Mebel
- Department of Chemistry & Biochemistry and the Biomolecular Sciences Institute
- Florida International University
- Miami
- USA
| | - Raphael G. Raptis
- Department of Chemistry & Biochemistry and the Biomolecular Sciences Institute
- Florida International University
- Miami
- USA
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18
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Unravelling the aggregation induced emission enhancement in Tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II) complex. INORG CHEM COMMUN 2018. [DOI: 10.1016/j.inoche.2018.09.035] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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19
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Bhagwat AA, Mohbiya DR, Avhad KC, Sekar N. Viscosity-active D-π-A chromophores derived from benzo[b]thiophen-3(2H)-one 1,1-dioxide (BTD): Synthesis, photophysical, and NLO properties. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 203:244-257. [PMID: 29874635 DOI: 10.1016/j.saa.2018.05.101] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 05/10/2018] [Accepted: 05/27/2018] [Indexed: 06/08/2023]
Abstract
Donor-π-Acceptor (D-π-A) compounds comprising of benzo[b]thiophen-3(2H)-one 1,1-dioxide (BTD) as acceptor with dibenzofuran, carbazole, triphenylamine, and N-methyl diphenylamine moieties as donors were synthesized for aggregation, viscosity induced emission enhancement and nonlinear optical studies. Compounds 3a-3d exhibited solid state emission. The compounds 3a-3d are viscosity sensitive in a solution of MeOH: PEG-400 and showed 10, 23, 14, and 25 fold viscosity induced enhanced emission. The compounds 3a, 3c, and 3d are aggregation-induced emission enhancement (AIEE) active while 3b quenches the fluorescence on aggregation. The quantum yield of 3a, 3c, and 3d in acetonitrile are 0.041, 0.002 and 0.002 which are enhanced in the aggregate state to 0.31, 0.009, and 0.22 respectively. Solvent-dependent parameters like dipole moment (μ), static polarizability (α), and hyperpolarizability (β and γ) were determined spectroscopically and using Density Functional Theory (DFT) calculations. First and second order hyperpolarizability increase as donor strength increases and the trend is found as 3a < 3b < 3c < 3d. Two-photon absorption (2PA) cross sections were calculated by the spectroscopic method, and large 2PA was observed 484.39 GM for compound 3c.
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Affiliation(s)
- Archana A Bhagwat
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai 400 019, India
| | - Dhanraj R Mohbiya
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai 400 019, India
| | - Kiran C Avhad
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai 400 019, India
| | - Nagaiyan Sekar
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai 400 019, India.
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20
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Bideh BN, Shahroosvand H. Influence of a Π-Conjugated Bridging Ligand in Light-Emitting Electrochemical Cells (LEECs). ChemistrySelect 2018. [DOI: 10.1002/slct.201800495] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Babak Nemati Bideh
- Group for Molecular Engineering of Advanced Functional Materials (GMA); Chemistry Department; University of Zanjan; Zanjan Iran
| | - Hashem Shahroosvand
- Group for Molecular Engineering of Advanced Functional Materials (GMA); Chemistry Department; University of Zanjan; Zanjan Iran
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21
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Densil S, Chang CH, Chen CL, Mathavan A, Ramdass A, Sathish V, Thanasekaran P, Li WS, Rajagopal S. Aggregation-induced emission enhancement of anthracene-derived Schiff base compounds and their application as a sensor for bovine serum albumin and optical cell imaging. LUMINESCENCE 2018; 33:780-789. [DOI: 10.1002/bio.3477] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 02/07/2018] [Accepted: 02/10/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Simon Densil
- Department of Chemistry; V. O. Chidambaram College; Thoothukudi India
| | | | | | | | - Arumugam Ramdass
- Department of Chemistry, Aditanar College of Arts and Science; Tiruchendur India
| | - Veerasamy Sathish
- Department of Chemistry, Bannari Amman Institute of Technology; Sathyamangalam India
| | | | - Wen-Shan Li
- Institute of Chemistry, Academia Sinica; Taipei Taiwan
| | - Seenivasan Rajagopal
- Postgraduate and Research Department of Chemistry, Vivekananda College, Tiruvedagam West - 625 234 Madurai India
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22
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Govindarajan R, Divya D, Nagarajaprakash R, Manimaran B. Synthesis and Characterization of Aminoquinonato Bridged Re(I)-Based Amide Functionalized Dinuclear Metallastirrups and Tetranuclear Lemniscate Metallacycles. ChemistrySelect 2018. [DOI: 10.1002/slct.201800296] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | - Dhanaraj Divya
- Department of Chemistry; Pondicherry University; Puducherry 605014 India
| | | | - Bala. Manimaran
- Department of Chemistry; Pondicherry University; Puducherry 605014 India
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23
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Bhol M, Shankar B, Sathiyendiran M. Rhenium(i) based irregular pentagonal-shaped metallacavitands. Dalton Trans 2018; 47:4494-4500. [PMID: 29505049 DOI: 10.1039/c8dt00574e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Neutral ditopic flexible N-donor ligands (Ln = bis(4-(naphtho[2,3-d]imidazol-1-ylmethyl)phenyl)methane, L1 bis(4-(benzimidazol-1-ylmethyl)phenyl)methane, L2 or bis(4-(2-nonylbenzimidazol-1-ylmethyl)phenyl)methane, L3) possessing a bis(4-methylphenyl)methane spacer with two imidazolyl donor units were designed and synthesized. The ligands were utilized to develop metallacavitands analogous to irregular pentagonal-shaped metallacavitands with larger cavities. The metallacavitands 1-4 were assembled from Re2(CO)10, a rigid bis-chelating donor (1,4-dihydroxy-9,10-anthraquinone or chloranilic acid) and Lnvia a solvothermal approach. The ligands and the metallacavitands were characterized by analytical and spectroscopic methods. The molecular structures of 1 and 4 were further confirmed by single crystal X-ray diffraction analysis which revealed that a toluene molecule resides in the hydrophobic cavity. Ln and 1-4 are emissive in DMSO at room temperature. The internal cavity of the metallacavitand acts as a host for aromatic guest molecules. The host-guest interaction properties of 1 with anthracene, naphthalene, nitrobenzene, 2-nitrotoluene, 4-nitrotoluene and 2,4-dinitrotoluene were studied by an emission spectroscopic method.
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Affiliation(s)
- Mamina Bhol
- School of Chemistry, University of Hyderabad, Hyderabad-500 046, India.
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24
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Ramdass A, Sathish V, Velayudham M, Thanasekaran P, Rajagopal S. Phosphorescence “Turn-On” Sensing of Anions by Rhenium(I) Schiff-Base Complexes. ChemistrySelect 2018. [DOI: 10.1002/slct.201702306] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Arumugam Ramdass
- Research Department of Chemistry; Aditanar College of Arts and Science; Tiruchendur - 628 216 India
| | - Veerasamy Sathish
- Department of Chemistry; Bannari Amman Institute of Technology; Sathyamangalam - 638 401 India
| | - Murugesan Velayudham
- Department of Chemistry; Thiagarajar College of Engineering; Madurai - 625015 India
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25
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Ramdass A, Sathish V, Babu E, Velayudham M, Thanasekaran P, Rajagopal S. Recent developments on optical and electrochemical sensing of copper(II) ion based on transition metal complexes. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.06.002] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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26
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Karthikeyan M, Govindarajan R, Duraisamy E, Veena V, Sakthivel N, Manimaran B. Self-Assembly of Chalcogenolato-Bridged Ester and Amide Functionalized Dinuclear Re(I) Metallacycles: Synthesis, Structural Characterization and Preliminary Cytotoxicity Studies. ChemistrySelect 2017. [DOI: 10.1002/slct.201700646] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | | | | | - Vijayakumar Veena
- Department of Biotechnology; Pondicherry University; Puducherry 605014 India
| | - Natarajan Sakthivel
- Department of Biotechnology; Pondicherry University; Puducherry 605014 India
| | - Bala. Manimaran
- Department of Chemistry; Pondicherry University; Puducherry 605014 India
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27
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Sathish V, Ramdass A, Velayudham M, Lu KL, Thanasekaran P, Rajagopal S. Development of luminescent sensors based on transition metal complexes for the detection of nitroexplosives. Dalton Trans 2017; 46:16738-16769. [DOI: 10.1039/c7dt02790g] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The detection of nitro explosives by transition metal complexes/metallosupramolecules with their designs and sensing mechanisms are comprehensively reviewed.
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Affiliation(s)
- Veerasamy Sathish
- Department of Chemistry
- Bannari Amman Institute of Technology
- Sathyamangalam – 638 401
- India
| | - Arumugam Ramdass
- Research Department of Chemistry
- Aditanar College of Arts and Science
- Tiruchendur – 628 216
- India
| | | | - Kuang-Lieh Lu
- Institute of Chemistry
- Academia Sinica
- Taipei
- 115 Taiwan
| | | | - Seenivasan Rajagopal
- Department of Physical Chemistry
- Madurai Kamaraj University
- Madurai – 625 021
- India
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28
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29
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Shafikov MZ, Kozhevnikov DN, Bodensteiner M, Brandl F, Czerwieniec R. Modulation of Intersystem Crossing Rate by Minor Ligand Modifications in Cyclometalated Platinum(II) Complexes. Inorg Chem 2016; 55:7457-66. [PMID: 27388146 DOI: 10.1021/acs.inorgchem.6b00704] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Photophysical properties of four new platinum(II) complexes comprising extended ppy (Hppy = 2-phenylpyridine) and thpy (Hthpy = 2-(2'-thienyl)pyridine) cyclometalated ligands and acetylacetonate (acac) are reported. Substitution of the benzene ring of Pt-ppy complexes 1 and 2 with a more electron-rich thiophene of Pt-thpy complexes 3 and 4 leads to narrowing of the HOMO-LUMO gap and thus to a red shift of the lowest energy absorption band and phosphorescence band, as expected for low-energy excited states of the intraligand/metal-to-ligand charge transfer character. However, in addition to these conventional spectral shifts, another, at first unexpected, substitution effect occurs. Pt-thpy complexes 3 and 4 are dual emissive showing fluorescence about 6000 cm(-1) (∼0.75 eV) higher in energy relative to the phosphorescence band, while for Pt-ppy complexes 1 and 2 only phosphorescence is observed. For dual-emissive complexes 3 and 4, ISC rates kISC are estimated to be in order of 10(9)-10(10) s(-1), while kISC of Pt-ppy complexes 1 and 2 is much faster amounting to 10(12) s(-1) or more. The relative intensities of the fluorescence and phosphorescence signals of Pt-thpy complexes 3 and 4 depend on the excitation wavelength, showing that hyper-intersystem crossing (HISC) in these complexes is observably significant.
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Affiliation(s)
- Marsel Z Shafikov
- Ural Federal University , Mira 19, Ekaterinburg, 620002, Russia.,I. Postovsky Institute of Organic Synthesis , Ekaterinburg, 620041, Russia
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30
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Mahendran V, Pasumpon K, Thimmarayaperumal S, Thilagar P, Shanmugam S. Tetraphenylethene–2-Pyrone Conjugate: Aggregation-Induced Emission Study and Explosives Sensor. J Org Chem 2016; 81:3597-602. [DOI: 10.1021/acs.joc.6b00267] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Vaithiyanathan Mahendran
- Department
of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India
| | - Kamaraj Pasumpon
- Department
of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India
| | | | - Pakkirisamy Thilagar
- Department
of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560 012, India
| | - Sivakumar Shanmugam
- Department
of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India
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31
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Wang Z, Bai W, Tong J, Wang YJ, Qin A, Sun JZ, Tang BZ. A macrocyclic 1,4-bis(4-pyridylethynyl)benzene showing unique aggregation-induced emission properties. Chem Commun (Camb) 2016; 52:10365-8. [DOI: 10.1039/c6cc02851a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A box-like macrocycle was constructed efficiently (60% yield). Because the intramolecular rotations are restricted by water clusters around the ionic moieties, the box shows unique aggregation-induced emission enhancement property.
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Affiliation(s)
- Zhaoyang Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Wei Bai
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Jiaqi Tong
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Yi Jia Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Anjun Qin
- Guangdong Innovative Research Team
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- China
| | - Jing Zhi Sun
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Ben Zhong Tang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
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32
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Mei J, Leung NLC, Kwok RTK, Lam JWY, Tang BZ. Aggregation-Induced Emission: Together We Shine, United We Soar! Chem Rev 2015; 115:11718-940. [DOI: 10.1021/acs.chemrev.5b00263] [Citation(s) in RCA: 5139] [Impact Index Per Article: 571.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ju Mei
- HKUST-Shenzhen Research Institute, Hi-Tech
Park, Nanshan, Shenzhen 518057, China
- Department of Chemistry,
HKUST Jockey Club Institute for Advanced Study, Institute of Molecular
Functional Materials, Division of Biomedical Engineering, State Key
Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Nelson L. C. Leung
- HKUST-Shenzhen Research Institute, Hi-Tech
Park, Nanshan, Shenzhen 518057, China
- Department of Chemistry,
HKUST Jockey Club Institute for Advanced Study, Institute of Molecular
Functional Materials, Division of Biomedical Engineering, State Key
Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ryan T. K. Kwok
- HKUST-Shenzhen Research Institute, Hi-Tech
Park, Nanshan, Shenzhen 518057, China
- Department of Chemistry,
HKUST Jockey Club Institute for Advanced Study, Institute of Molecular
Functional Materials, Division of Biomedical Engineering, State Key
Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Jacky W. Y. Lam
- HKUST-Shenzhen Research Institute, Hi-Tech
Park, Nanshan, Shenzhen 518057, China
- Department of Chemistry,
HKUST Jockey Club Institute for Advanced Study, Institute of Molecular
Functional Materials, Division of Biomedical Engineering, State Key
Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ben Zhong Tang
- HKUST-Shenzhen Research Institute, Hi-Tech
Park, Nanshan, Shenzhen 518057, China
- Department of Chemistry,
HKUST Jockey Club Institute for Advanced Study, Institute of Molecular
Functional Materials, Division of Biomedical Engineering, State Key
Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- Guangdong
Innovative Research Team, SCUT-HKUST Joint Research Laboratory, State
Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
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33
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Dong W, Pina J, Pan Y, Preis E, Seixas de Melo JS, Scherf U. Polycarbazoles and polytriphenylamines showing aggregation-induced emission (AIE) and intramolecular charge transfer (ICT) behavior for the optical detection of nitroaromatic compounds. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.08.064] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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34
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Lim WL, Oo CW. Intensity enhancement of photoluminescent polyesters by photocrosslinking. POLYM INT 2015. [DOI: 10.1002/pi.4938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Wan-Leng Lim
- Department of Organic Chemistry, School of Chemical Sciences; Universiti Sains Malaysia; 11800 USM Penang Malaysia
| | - Chuan-Wei Oo
- Department of Organic Chemistry, School of Chemical Sciences; Universiti Sains Malaysia; 11800 USM Penang Malaysia
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35
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Sathish V, Ramdass A, Thanasekaran P, Lu KL, Rajagopal S. Aggregation-induced phosphorescence enhancement (AIPE) based on transition metal complexes—An overview. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2015. [DOI: 10.1016/j.jphotochemrev.2015.04.001] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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36
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Abstract
Efficient sensing of trace amount nitroaromatic (NAC) explosives has become a major research focus in recent time due to concerns over national security as well as their role as environment pollutants. NO2 -containing electron-deficient aromatic compounds, such as picric acid (PA), trinitrotoluene (TNT), and dinitrotoluene (DNT), are the common constituents of many commercially available chemical explosives. In this article, we have summarized our recent developments on the rational design of electron-rich self-assembled discrete molecular sensors and their efficacy in sensing nitroaromatics both in solution as well as in vapor phase. Several π-electron-rich fluorescent metallacycles (squares, rectangles, and tweezers/pincers) and metallacages (trigonal and tetragonal prisms) have been synthesized by means of metal-ligand coordination-bonding interactions, with enough internal space to accommodate electron-deficient nitroaromatics at the molecular level by multiple supramolecular interactions. Such interactions subsequently result in the detectable fluorescence quenching of sensors even in the presence of trace quantities of nitroaromatics. The fascinating sensing characteristics of molecular architectures discussed in this article may enable future development of improved sensors for nitroaromatic explosives.
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37
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Pan J, Tang F, Ding A, Kong L, Yang L, Tao X, Tian Y, Yang J. A small-molecule chemosensor for the selective detection of 2,4,6-trinitrophenol (TNP). RSC Adv 2015. [DOI: 10.1039/c4ra07957d] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A pyridine-based receptor (L) was synthesised and characterized, which can serve as a small-molecule sensor for the specific recognition of TNP.
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Affiliation(s)
- Jianting Pan
- Department of Chemistry
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- P.R. China
| | - Fang Tang
- Department of Chemistry
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- P.R. China
| | - Aixiang Ding
- Department of Chemistry
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- P.R. China
| | - Lin Kong
- Department of Chemistry
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- P.R. China
| | - Longmei Yang
- Department of Chemistry
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- P.R. China
| | - Xutang Tao
- State Key Laboratory Materials
- Shandong University
- Jinan 502100
- P.R. China
| | - Yupeng Tian
- Department of Chemistry
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- P.R. China
| | - Jiaxiang Yang
- Department of Chemistry
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- P.R. China
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38
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Ramdass A, Sathish V, Velayudham M, Thanasekaran P, Umapathy S, Rajagopal S. Synthesis and characterization of monometallic rhenium(i) complexes and their application as selective sensors for copper(ii) ions. RSC Adv 2015. [DOI: 10.1039/c5ra03157e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Monometallic Re(i) complexes, selective and sensitive sensor of Cu(ii) ion, show substantial enhancement in the emission intensity, quantum yield, and lifetime due to the restriction of CN isomerization.
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Affiliation(s)
- Arumugam Ramdass
- School of Chemistry
- Madurai Kamaraj University
- Madurai-625 021
- India
| | | | - Murugesan Velayudham
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore-560 012
- India
| | | | - Siva Umapathy
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore-560 012
- India
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39
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Mahendran V, Shanmugam S. Aggregates of a hydrazono-sulfonamide adduct as picric acid sensors. RSC Adv 2015. [DOI: 10.1039/c5ra17359k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A sensitive and selective sensor for picric acid was developed using aggregates of a novel hydrazono-sulfonamide adduct.
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Affiliation(s)
| | - Sivakumar Shanmugam
- Department of Organic Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai 625021
- India
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40
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Chen Z, Han X, Zhang J, Wu D, Yu GA, Yin J, Liu SH. Fluorene-based novel gold(i) complexes with aggregation-induced emission (AIE) or aggregate fluorescence change characteristics: from green to white emission. RSC Adv 2015. [DOI: 10.1039/c4ra14972f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Five novel fluorene-based gold(i) complexes were synthesized, these luminogens exhibited AIE or aggregate fluorescence change properties.
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Affiliation(s)
- Zhao Chen
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Xie Han
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Jing Zhang
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Di Wu
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Guang-Ao Yu
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Jun Yin
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Sheng Hua Liu
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
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41
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Chopra R, Bhalla V, Kumar M, Kaur S. Rhodamine appended hexaphenylbenzene derivative: through bond energy transfer for sensing of picric acid. RSC Adv 2015. [DOI: 10.1039/c5ra00436e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
A rhodamine appended hexaphenylbenzene based derivative 5 has been designed and synthesized, which displays through bond energy transfer in the presence of picric acid in MeOH and serves as a "turn on" sensor for picric acid.
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Affiliation(s)
- Radhika Chopra
- Department of Chemistry
- UGC-Centre for Advanced Studies-1
- Guru Nanak Dev University
- Amritsar
- India
| | - Vandana Bhalla
- Department of Chemistry
- UGC-Centre for Advanced Studies-1
- Guru Nanak Dev University
- Amritsar
- India
| | - Manoj Kumar
- Department of Chemistry
- UGC-Centre for Advanced Studies-1
- Guru Nanak Dev University
- Amritsar
- India
| | - Sharanjeet Kaur
- Department of Chemistry
- UGC-Centre for Advanced Studies-1
- Guru Nanak Dev University
- Amritsar
- India
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42
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Hengchang M, Zhongwei Z, Yuanyuan J, Lajia Z, Chunxuan Q, Haiying C, Zengming Y, Zhiwang Y, Ziqiang L. Triphenylamine-decorated BODIPY fluorescent probe for trace detection of picric acid. RSC Adv 2015. [DOI: 10.1039/c5ra12154j] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The near-IR photoactive material TBMA demonstrated high selectivity and sensitivity for picric acid detection with low detection limit and high quenching constant.
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Affiliation(s)
- Ma Hengchang
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Zhang Zhongwei
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Jin Yuanyuan
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Zha Lajia
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Qi Chunxuan
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Cao Haiying
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Yang Zengming
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Yang Zhiwang
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Lei Ziqiang
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
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43
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Alkoxy bridged binuclear rhenium (I) complexes as a potential sensor for β-amyloid aggregation. Talanta 2014; 130:274-9. [DOI: 10.1016/j.talanta.2014.06.070] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 06/27/2014] [Accepted: 06/28/2014] [Indexed: 01/05/2023]
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44
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Mei J, Hong Y, Lam JWY, Qin A, Tang Y, Tang BZ. Aggregation-induced emission: the whole is more brilliant than the parts. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:5429-79. [PMID: 24975272 DOI: 10.1002/adma.201401356] [Citation(s) in RCA: 1842] [Impact Index Per Article: 184.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 05/25/2014] [Indexed: 05/20/2023]
Abstract
"United we stand, divided we fall."--Aesop. Aggregation-induced emission (AIE) refers to a photophysical phenomenon shown by a group of luminogenic materials that are non-emissive when they are dissolved in good solvents as molecules but become highly luminescent when they are clustered in poor solvents or solid state as aggregates. In this Review we summarize the recent progresses made in the area of AIE research. We conduct mechanistic analyses of the AIE processes, unify the restriction of intramolecular motions (RIM) as the main cause for the AIE effects, and derive RIM-based molecular engineering strategies for the design of new AIE luminogens (AIEgens). Typical examples of the newly developed AIEgens and their high-tech applications as optoelectronic materials, chemical sensors and biomedical probes are presented and discussed.
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Affiliation(s)
- Ju Mei
- Department of Chemistry, HKUST Jockey Club Institute for Advanced Study, Division of Life Science, Institute of Molecular Functional Materials and Division of Biomedical Engineering, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
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45
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Wenfeng L, Hengchang M, Ziqiang L. Self-assembled triphenylamine derivative for trace detection of picric acid. RSC Adv 2014. [DOI: 10.1039/c4ra05843g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Triphenylamine derivative chemosensors in contact mode and vapor phase exhibit efficient quenching behaviors for detection of PA at attogram level.
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Affiliation(s)
- Li Wenfeng
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou 730070, China
| | - Ma Hengchang
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou 730070, China
| | - Lei Ziqiang
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou 730070, China
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46
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Sivaraman G, Vidya B, Chellappa D. Rhodamine based selective turn-on sensing of picric acid. RSC Adv 2014. [DOI: 10.1039/c4ra02931c] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
A rhodamine based derivative RDD-1 bearing dimethylaminobenzaldehyde has been designed and synthesized.
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Affiliation(s)
- Gandhi Sivaraman
- School of chemistry
- Madurai Kamaraj University
- Madurai-625021, India
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