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Harshitha D, Kumar A, Mahesh HM, Renuka CG. Anthocyanins of Delonix Regia Floral Petals: A Novel Approach on Fluorescence Enhancement, Forster Resonance Energy Transfer Mechanism and Photostability Studies for Optoelectronic Applications. J Fluoresc 2024:10.1007/s10895-024-03730-9. [PMID: 38739317 DOI: 10.1007/s10895-024-03730-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Accepted: 04/17/2024] [Indexed: 05/14/2024]
Abstract
In this work, we focused on extracting the anthocyanin dye in acetone, butanol, ethanol, and water solvents from Delonix regia flowers by a simple maceration extraction process. The identification of functional group analysis, vibrational studies, energy transfer mechanisms, optoelectronic properties, photostability studies, FRET-assisted potential light emissions and photometric properties of the anthocyanin dyes are successively investigated. FTIR spectroscopy and vibrational studies have confirmed the existence of polyphenolic groups in 2-phenyl chromenylium (anthocyanin) dyes. The optoelectronic results show the least direct bandgap (2.04 eV), indirect bandgap (1.55 eV), Urbach energy (0.380 eV), high refractive index (1.20), dielectric constant (2.794), and high optical conductivity (1.954 × 103 S/m) for the anthocyanin dye extracted found in water solvent. The photoluminescence properties such as Stoke's shift, high quantum yield, and lifetime results show that anthocyanin dyes are promising candidates for red-LEDs and optical materials. The absorption and emission spectra of the anthocyanin dyes follow the mirror image rule and the Franck-Condon factor exists between vibrational energy levels corresponding to all the electronic transitions. The excellent correspondence between the absorption and emission spectra reinforces that the anthocyanins are efficient (46%) FRET probes. Further, photometric properties such as CIE, CRI, CCT and colour purity results of anthocyanins in all studied solvents revealed that this material exhibits orange to red shades (x = 0.48 → 0.54 and y = 0.36 →0.45) and is well suitable for have great potential in the manufacturing of Organic-LEDs and other optoelectronic device applications.
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Affiliation(s)
- D Harshitha
- Department of Physics, Bangalore University, Jnanabharathi campus, Bengaluru, 560056, India
| | - Anil Kumar
- Department of Physics, Government First Grade College, Sindhanur, 584128, India
| | - H M Mahesh
- Department of Electronic Science, Bangalore University, Jnanabharathi campus, Bangalore, 560056, India
| | - C G Renuka
- Department of Physics, Bangalore University, Jnanabharathi campus, Bengaluru, 560056, India.
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2
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Sharma P, Ganguly M, Sahu M. Role of transition metals in coinage metal nanoclusters for the remediation of toxic dyes in aqueous systems. RSC Adv 2024; 14:11411-11428. [PMID: 38595712 PMCID: PMC11002567 DOI: 10.1039/d4ra00931b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 03/26/2024] [Indexed: 04/11/2024] Open
Abstract
A difficult issue in chemistry and materials science is to create metal compounds with well-defined components. Metal nanoclusters, particularly those of coinage groups (Cu, Ag, and Au), have received considerable research interest in recent years owing to the availability of atomic-level precision via joint experimental and theoretical methods, thus revealing the mechanisms in diverse nano-catalysts and functional materials. The textile sector significantly contributes to wastewater containing pollutants such as dyes and chemical substances. Textile and fabric manufacturing account for about 7 × 105 tons of wastewater annually. Approximately one thousand tons of dyes used in textile processing and finishing has been recorded as being discharged into natural streams and water bodies. Owing to the widespread environmental concerns, research has been conducted to develop absorbents that are capable of removing contaminants and heavy metals from water bodies using low-cost technology. Considering this idea, we reviewed coinage metal nanoclusters for azo and cationic dye degradation. Fluorometric and colorimetric techniques are used for dye degradation using coinage metal nanoclusters. Few reports are available on dye degradation using silver nanoclusters; and some of them are discussed in detailed herein to demonstrate the synergistic effect of gold and silver in dye degradation. Mostly, the Rhodamine B dye is degraded using coinage metals. Silver nanoclusters take less time for degradation than gold and copper nanoclusters. Mostly, H2O2 is used for degradation in gold nanoclusters. Still, all coinage metal nanoclusters have been used for the degradation due to suitable HOMO-LUMO gap, and the adsorption of a dye onto the surface of the catalyst results in the exchange of electrons and holes, which leads to the oxidation and reduction of the adsorbed dye molecule. Compared to other coinage metal nanoclusters, Ag/g-C3N4 nanoclusters displayed an excellent degradation rate constant with the dye Rhodamine B (0.0332 min-1). The behavior of doping transition metals in coinage metal nanoclusters is also reviewed herein. In addition, we discuss the mechanistic grounds for degradation, the fate of metal nanoclusters, anti-bacterial activity of nanoclusters, toxicity of dyes, and sensing of dyes.
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Affiliation(s)
- Priyanka Sharma
- Department of Chemistry, Manipal University Jaipur Dehmi Kalan Jaipur 303007 India
| | - Mainak Ganguly
- Department of Chemistry, Manipal University Jaipur Dehmi Kalan Jaipur 303007 India
| | - Mamta Sahu
- Department of Chemistry, Manipal University Jaipur Dehmi Kalan Jaipur 303007 India
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3
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Fan Y, Fan S, Liu L, Guo S, He J, Li X, Lian Z, Guo W, Chen X, Wang Y, Jiang H. Efficient manipulation of Förster resonance energy transfer through host-guest interaction enables tunable white-light emission and devices in heterotopic bisnanohoops. Chem Sci 2023; 14:11121-11130. [PMID: 37860654 PMCID: PMC10583698 DOI: 10.1039/d3sc04358d] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 09/24/2023] [Indexed: 10/21/2023] Open
Abstract
In this study, we synthesized and reported the heterotopic bisnanohoops P5-[8,10]CPPs containing cycloparaphenylenes (CPPs) and a pillar[5]arene unit, which act not only as energy donors but also as a host for binding energy acceptors. We demonstrated that a series of elegant FRET systems could be constructed successfully through self-assembly between donors P5-[8,10]CPPs and acceptors with different emissions via host-guest interaction. These FRET systems further allow us to finely adjust the donors P5-[8,10]CPPs and acceptors (BODIPY-Br and Rh-Br) for achieving multiple color-tunable emissions, particularly white-light emission. More importantly, these host-guest complexes were successfully utilized in the fabrication of white-light fluorescent films and further integrated with a 365 nm LED lamp to create white LED devices. The findings highlight a new application of carbon nanorings in white-light emission materials, beyond the common recognition of π-conjugated molecules.
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Affiliation(s)
- Yanqing Fan
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Shimin Fan
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Lin Liu
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Shengzhu Guo
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Jing He
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Xiaonan Li
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Zhe Lian
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Weijie Guo
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Xuebo Chen
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Ying Wang
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Hua Jiang
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
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4
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Ma X, Lai Y, Wang Y, Tang J, Ren T, Geng Y, Gao Y, Zhang J, Qiao B. Construction of Light‐Harvesting Systems Based on a Fluorescent Probe that Self‐Assembles in the Presence of Zn
2+. ChemistrySelect 2022. [DOI: 10.1002/slct.202204015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Xinxian Ma
- College of Chemistry and Chemical Engineering Ningxia Normal University 756000 Guyuan Ningxia Hui Autonomous Region People's Republic of China
| | - Yingshan Lai
- College of Chemistry and Chemical Engineering Ningxia Normal University 756000 Guyuan Ningxia Hui Autonomous Region People's Republic of China
| | - Yipei Wang
- College of Chemistry and Chemical Engineering Ningxia Normal University 756000 Guyuan Ningxia Hui Autonomous Region People's Republic of China
| | - Jiahong Tang
- College of Chemistry and Chemical Engineering Ningxia Normal University 756000 Guyuan Ningxia Hui Autonomous Region People's Republic of China
| | - Tianqi Ren
- College of Chemistry and Chemical Engineering Ningxia Normal University 756000 Guyuan Ningxia Hui Autonomous Region People's Republic of China
| | - Yutao Geng
- College of Chemistry and Chemical Engineering Ningxia Normal University 756000 Guyuan Ningxia Hui Autonomous Region People's Republic of China
| | - Yang Gao
- College of Chemistry and Chemical Engineering Ningxia Normal University 756000 Guyuan Ningxia Hui Autonomous Region People's Republic of China
| | - Jiali Zhang
- College of Chemistry and Chemical Engineering Ningxia Normal University 756000 Guyuan Ningxia Hui Autonomous Region People's Republic of China
| | - Bo Qiao
- College of Chemistry and Chemical Engineering Ningxia Normal University 756000 Guyuan Ningxia Hui Autonomous Region People's Republic of China
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5
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Fanciullo G, Conti I, Didier P, Klymchenko A, Léonard J, Garavelli M, Rivalta I. Modelling quenching mechanisms of disordered molecular systems in the presence of molecular aggregates. Phys Chem Chem Phys 2022; 24:1787-1794. [PMID: 34985481 DOI: 10.1039/d1cp04260b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Exciton density dynamics recorded in time-resolved spectroscopic measurements is a useful tool to recover information on energy transfer (ET) processes that can occur at different timescales, up to the ultrafast regime. Macroscopic models of exciton density decays, involving both direct Förster-like ET and diffusion mechanisms for exciton-exciton annihilation, are largely used to fit time-resolved experimental data but generally neglect contributions from molecular aggregates that can work as quenching species. In this work, we introduce a macroscopic model that includes contributions from molecular aggregate quenchers in a disordered molecular system. As an exemplifying case, we considered a homogenous distribution of rhodamine B dyes embedded in organic nanoparticles to set the initial parameters of the proposed model. The influence of such model parameters is systematically analysed, showing that the presence of molecular aggregate quenchers can be monitored by evaluating the exciton density long time decays. We showed that the proposed model can be applied to molecular systems with ultrafast decays, and we anticipated that it could be used in future studies for global fitting of experimental data with potential support from first-principles simulations.
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Affiliation(s)
- Giacomo Fanciullo
- Dipartimento di Chimica Industriale "Toso Montanari", ALMA MATER STUDIORUM, Università di Bologna, Viale del Risorgimento 4, 40126 Bologna, Italy.
| | - Irene Conti
- Dipartimento di Chimica Industriale "Toso Montanari", ALMA MATER STUDIORUM, Università di Bologna, Viale del Risorgimento 4, 40126 Bologna, Italy.
| | - Pascal Didier
- Laboratoire de Bioimagerie et Pathologies, UMR 7021 CNRS, Université de Strasbourg, 74 Route du Rhin, 67401 Illkirch, France
| | - Andrey Klymchenko
- Laboratoire de Bioimagerie et Pathologies, UMR 7021 CNRS, Université de Strasbourg, 74 Route du Rhin, 67401 Illkirch, France
| | - Jérémie Léonard
- Université de Strasbourg, CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504, F-67000 Strasbourg, France
| | - Marco Garavelli
- Dipartimento di Chimica Industriale "Toso Montanari", ALMA MATER STUDIORUM, Università di Bologna, Viale del Risorgimento 4, 40126 Bologna, Italy.
| | - Ivan Rivalta
- Dipartimento di Chimica Industriale "Toso Montanari", ALMA MATER STUDIORUM, Università di Bologna, Viale del Risorgimento 4, 40126 Bologna, Italy. .,Université de Lyon, École Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR 5182, Laboratoire de Chimie, 46 Allée d'Italie, F69364 Lyon, France
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6
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Rogati GMA, Capecci C, Fazio E, Serroni S, Puntoriero F, Guidoni L, Campagna S. Molecular Modelling and Simulations of Light Harvesting Decanuclear Ru-based Dendrimers for Artificial Photosynthesis. Chemistry 2021; 28:e202103310. [PMID: 34752652 PMCID: PMC9299829 DOI: 10.1002/chem.202103310] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Indexed: 11/08/2022]
Abstract
The structure of a decanuclear photo- and redox-active dendrimer based on Ru(II) polypyridine subunits, suitable as a light-harvesting multicomponent species for artificial photosynthesis, has been investigated by means of computer modelling. The compound has the general formula [Ru{(μ-dpp)Ru[(μ-dpp)Ru(bpy) 2 ] 2 } 3 ](PF 6 ) 20 ( Ru10 ; bpy =2,2'-bipyridine; dpp= 2,3-bis(2'-pyridyl)pyrazine). The stability of possible isomers of each monomer was investigated by performing classical molecular dynamics (MD) and quantum mechanics (QM) simulations on each monomer and comparing the results. The number of stable isomers is reduced to 36 with a prevalence of MER isomerism in the central core, as previously observed by NMR experiments. The simulations on decanuclear dendrimers suggest that the stability of the dendrimer is not linked to the stability of the individual monomers composing the dendrimer but rather governed by the steric constrains originated by the multimetallic assembly. Finally, the self-aggregation of Ru10 and the distribution of the counterions around the complexes is investigated using Molecular Dynamics both in implicit and explicit acetonitrile solution. In representative examples, with nine and four dendrimers, the calculated pair distribution function for the ruthenium centers suggests a self-aggregation mechanism where the dendrimers are approaching in small blocks and then aggregate all together. Scanning transmission electron microscopy complements the investigation, supporting the formation of different aggregates at various concentrations.
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Affiliation(s)
- Giovanna M A Rogati
- University of L'Aquila Department of Physical and Chemical Sciences: Universita degli Studi dell'Aquila Dipartimento di Scienze Fisiche e Chimiche, Ingegneria, Scienze dell'Informazione e Matematica, ITALY
| | - Chiara Capecci
- University of L'Aquila Department of Information Engineering Computer Science and Mathematics: Universita degli Studi dell'Aquila Dipartimento di Ingegneria e Scienze dell'Informazione e Matematica, Ingegneria, scienze dell'Informazione e matematica, ITALY
| | - Enza Fazio
- University of Messina, Scienze matematiche ed informatiche, scienze fisiche e scienze della Terra, ITALY
| | - Scolastica Serroni
- University of Messina, Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, ITALY
| | - Fausto Puntoriero
- University of Messina Faculty of Physical and Natural Sciences: Universita degli Studi di Messina, Scienze chimiche, biologiche, farmaceutiche ed ambientali, ITALY
| | | | - Sebastiano Campagna
- University of Messina, Chemical Sciences, Via Stagno d'alcontres 31, 98166, Messina, ITALY
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7
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Pyo K, Xu H, Han SM, Saxena S, Yoon SY, Wiederrecht G, Ramakrishna G, Lee D. Synthesis and Photophysical Properties of Light-Harvesting Gold Nanoclusters Fully Functionalized with Antenna Chromophores. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2004836. [PMID: 33559347 DOI: 10.1002/smll.202004836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 11/25/2020] [Indexed: 06/12/2023]
Abstract
The development of efficient light-harvesting systems is important to understand the key aspects of solar-energy conversion processes and to utilize them in various photonic applications. Here, atomically well-defined gold nanoclusters are reported as a new platform to fabricate artificial light-harvesting systems. An efficient amide coupling method is developed to synthesize water-soluble Au22 clusters fully protected with pyrene chromophores by taking advantage of their facile phase-transfer reaction. The synthesized Au22 clusters with densely packed 18 pyrene chromophores (Au22 -PyB18 ) exhibit triple-emission in blue, green, and red wavelength regions arising respectively from pyrene monomer, pyrene excimer, and Au22 emission, producing bright white light emission together. The photoluminescence of Au22 is enhanced by more than tenfold, demonstrating that pyrenes at the periphery efficiently channel the absorbed energy to the luminescent Au22 at the center. A combination of femtosecond transient absorption and anisotropy measurements of Au22 -PyB18 explicitly reveals three main decay components of 220 fs, 3.5 ps, and 160 ps that can be assigned to energy migration between pyrenes and energy transfer processes from pyrene monomer and excimer to the central Au22 , respectively.
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Affiliation(s)
- Kyunglim Pyo
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Hongmei Xu
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Sang Myeong Han
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Shivi Saxena
- Department of Chemistry, Western Michigan University, Kalamazoo, MI, 49008, USA
| | - Sook Young Yoon
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Gary Wiederrecht
- Center for Nanoscale Materials, Argonne National Laboratory, Chicago, IL, 60439, USA
| | - Guda Ramakrishna
- Department of Chemistry, Western Michigan University, Kalamazoo, MI, 49008, USA
| | - Dongil Lee
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
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8
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Highly efficient artificial light-harvesting systems constructed in aqueous solution for supramolecular photocatalysis. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.01.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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9
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Nowacka M, Makowski T, Kowalewska A. Hybrid Fluorescent Poly(silsesquioxanes) with Amide- and Triazole-Containing Side Groups for Light Harvesting and Cation Sensing. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E4491. [PMID: 33050483 PMCID: PMC7600812 DOI: 10.3390/ma13204491] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 09/02/2020] [Accepted: 10/06/2020] [Indexed: 01/12/2023]
Abstract
Hybrid polymers containing pyrene (Py) units bound to linear poly(silsesquioxane) (LPSQ) chains through flexible linkers containing heteroatoms (S, N, O) (LPSQ-triazole-Py and LPSQ-amide-Py) exhibit intense fluorescence emission, both in very diluted solutions (c = 10-8 mol/L) and in the solid state. The materials are thermally stable and exhibit good thin film forming abilities. Their optical and physicochemical properties were found to be strongly dependent on the structure of the side chains. Comparative studies with octahedral silsesquioxane (POSS) analogues (POSS-triazole-Py and POSS-amide-Py) emphasized the role of the specific double-strand architecture of the LPSQ backbone and distribution of side Py groups for their photo-luminescent properties. The new hybrid materials were tested as fluorescence energy donors to red-emitting dyes (Nile Red and Coumarine 6). All the silsesquioxanes studied were found to be able to transfer FL emission energy to Coumarin 6, irrespectively of their spatial structure. However, due to the differences in the wavelength range of FL emission, only LPSQ-triazole-Py were able to act as energy donors to Nile Red. The Py-grafted LPSQ may be also applied for development of soluble and highly emissive chemosensors. Their fluorescent nature was explored for the detection of Cu(II), Fe(III), Co(II), Ag(I), Hg(II), Mg(II), Ca(II), Pb(II) and Zn(II). The morphology of the side chains and hydrogen-bonding interactions influenced the sensing capacity of all the studied materials.
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Affiliation(s)
- Maria Nowacka
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland; (T.M.); (A.K.)
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10
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Mondal B, Bera R, Ghosh S, Nayak SK, Patra A. Investigation of Morphology-Controlled Ultrafast Relaxation Processes of Aggregated Porphyrin. Chemphyschem 2020; 21:2196-2205. [PMID: 33462915 DOI: 10.1002/cphc.202000482] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 07/22/2020] [Indexed: 11/10/2022]
Abstract
Here, we have synthesized rod and flake shaped morphology of porphyrin aggregates from 5, 10, 15, 20-tetra (4-n-octyloxyphenyl) porphyrin (4-opTPP) molecule which are evident from scanning electron microscopy (SEM). The formation of J-type aggregation is evident from steady state and time-resolved fluorescence spectroscopic studies. Ultrafast transient absorption spectroscopic studies reveal that the excited state lifetime is controlled by the morphology and the time constant for S1→S0 relaxation changes from 3.05 ps to 744 ps with changing the shape from rod to flake, respectively. In spite of similar exciton coupling energy in both the aggregates, the flake shaped aggregates undergo a faster exciton relaxation process and the non-radiative relaxation channels are found to depend on the shape of aggregates. The fundamental understanding of morphology controlled ultrafast relaxation processes of aggregated porphyrin is important for designing efficient light harvesting devices.
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Affiliation(s)
- Bodhisatwa Mondal
- School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India
| | - Rajesh Bera
- School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India
| | - Srijon Ghosh
- School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India
| | - Sandip K Nayak
- Bio-organic Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Amitava Patra
- School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India.,Institute of Nano Science and Technology, Habitat Centre, Sector 64, Phase 10, Mohali, 160062, India
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11
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Kundu S, Sk B, Pallavi P, Giri A, Patra A. Molecular Engineering Approaches Towards All‐Organic White Light Emitting Materials. Chemistry 2020; 26:5557-5582. [DOI: 10.1002/chem.201904626] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Subhankar Kundu
- Department of ChemistryIndian Institute of Science Education and Research Bhopal, Bhopal Bypass, Road Bhauri, Bhopal 462066 Madhya Pradesh India
| | - Bahadur Sk
- Department of ChemistryIndian Institute of Science Education and Research Bhopal, Bhopal Bypass, Road Bhauri, Bhopal 462066 Madhya Pradesh India
| | - Pragyan Pallavi
- Department of ChemistryIndian Institute of Science Education and Research Bhopal, Bhopal Bypass, Road Bhauri, Bhopal 462066 Madhya Pradesh India
| | - Arkaprabha Giri
- Department of ChemistryIndian Institute of Science Education and Research Bhopal, Bhopal Bypass, Road Bhauri, Bhopal 462066 Madhya Pradesh India
| | - Abhijit Patra
- Department of ChemistryIndian Institute of Science Education and Research Bhopal, Bhopal Bypass, Road Bhauri, Bhopal 462066 Madhya Pradesh India
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12
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Guo S, Song Y, He Y, Hu XY, Wang L. Highly Efficient Artificial Light-Harvesting Systems Constructed in Aqueous Solution Based on Supramolecular Self-Assembly. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800175] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Shuwen Guo
- Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Yongshang Song
- Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Yuling He
- State Key Laboratory of Analytical Chemistry for Life Science, Collaborative Innovation of Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Xiao-Yu Hu
- Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Leyong Wang
- Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
- School of Petrochemical Engineering; Changzhou University; Changzhou 213164 China
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13
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Guo S, Song Y, He Y, Hu XY, Wang L. Highly Efficient Artificial Light-Harvesting Systems Constructed in Aqueous Solution Based on Supramolecular Self-Assembly. Angew Chem Int Ed Engl 2018; 57:3163-3167. [PMID: 29383817 DOI: 10.1002/anie.201800175] [Citation(s) in RCA: 171] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Indexed: 12/29/2022]
Abstract
Highly efficient light-harvesting systems were successfully fabricated in aqueous solution based on the supramolecular self-assembly of a water-soluble pillar[6]arene (WP6), a salicylaldehyde azine derivative (G), and two different fluorescence dyes, Nile Red (NiR) or Eosin Y (ESY). The WP6-G supramolecular assembly exhibits remarkably improved aggregation-induced emission enhancement and acts as a donor for the artificial light-harvesting system, and NiR or ESY, which are loaded within the WP6-G assembly, act as acceptors. An efficient energy-transfer process takes place from the WP6-G assembly not only to NiR but also to ESY for these two different systems. Furthermore, both of the WP6-G-NiR and WP6-G-ESY systems show an ultrahigh antenna effect at a high donor/acceptor ratio.
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Affiliation(s)
- Shuwen Guo
- Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Yongshang Song
- Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Yuling He
- State Key Laboratory of Analytical Chemistry for Life Science, Collaborative Innovation of Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Xiao-Yu Hu
- Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Leyong Wang
- Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.,School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China
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14
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Jana J, Aditya T, Pal T. Carbon dot–Au(i)Ag(0) assembly for the construction of an artificial light harvesting system. Dalton Trans 2018; 47:3580-3587. [DOI: 10.1039/c8dt00230d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Significant transfer of energy from a carbon dot, GCD, to a fluorescent assembly, AuAgFA, paves the way to construct an artificial light harvesting system out of a GCD–AuAgFA pair.
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Affiliation(s)
- Jayasmita Jana
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur-721302
- India
| | - Teresa Aditya
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur-721302
- India
| | - Tarasankar Pal
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur-721302
- India
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15
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Trofymchuk K, Reisch A, Didier P, Fras F, Gilliot P, Mely Y, Klymchenko AS. Giant light-harvesting nanoantenna for single-molecule detection in ambient light. NATURE PHOTONICS 2017; 11:657-663. [PMID: 28983324 PMCID: PMC5624503 DOI: 10.1038/s41566-017-0001-7] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Here, we explore the enhancement of single molecule emission by polymeric nano-antenna that can harvest energy from thousands of donor dyes to a single acceptor. In this nano-antenna, the cationic dyes are brought together in very close proximity using bulky counterions, thus enabling ultrafast diffusion of excitation energy (≤30 fs) with minimal losses. Our 60-nm nanoparticles containing >10,000 rhodamine-based donor dyes can efficiently transfer energy to 1-2 acceptors resulting in an antenna effect of ~1,000. Therefore, single Cy5-based acceptors become 25-fold brighter than quantum dots QD655. This unprecedented amplification of the acceptor dye emission enables observation of single molecules at illumination powers (1-10 mW cm-2) that are >10,000-fold lower than typically required in single-molecule measurements. Finally, using a basic setup, which includes a 20X air objective and a sCMOS camera, we could detect single Cy5 molecules by simply shining divergent light on the sample at powers equivalent to sunlight.
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Affiliation(s)
- Kateryna Trofymchuk
- Université de Strasbourg, Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS, Faculté de Pharmacie, 74, Route du Rhin, F-67401 ILLKIRCH, France
| | - Andreas Reisch
- Université de Strasbourg, Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS, Faculté de Pharmacie, 74, Route du Rhin, F-67401 ILLKIRCH, France
| | - Pascal Didier
- Université de Strasbourg, Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS, Faculté de Pharmacie, 74, Route du Rhin, F-67401 ILLKIRCH, France
| | | | | | - Yves Mely
- Université de Strasbourg, Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS, Faculté de Pharmacie, 74, Route du Rhin, F-67401 ILLKIRCH, France
| | - Andrey S. Klymchenko
- Université de Strasbourg, Laboratoire de Biophotonique et Pharmacologie, UMR 7213 CNRS, Faculté de Pharmacie, 74, Route du Rhin, F-67401 ILLKIRCH, France
- Correspondence and requests for materials should be addressed to A.S.K. ; Tel: +33 368 85 42 55
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16
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Jana B, Ghosh A, Patra A. Photon Harvesting in Conjugated Polymer-Based Functional Nanoparticles. J Phys Chem Lett 2017; 8:4608-4620. [PMID: 28853893 DOI: 10.1021/acs.jpclett.7b01936] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The design of new generation light-harvesting systems based on conjugated polymer nanoparticles (PNPs) is an emerging field of research to convert solar energy into renewable energy. In this Perspective, we focus on the understanding of the light harvesting processes like exciton dynamics, energy transfer, antenna effect, charge carrier dynamics, and other related processes of conjugated polymer-based functional nanomaterials. Spectroscopic investigations unveil the rotational dynamics of the dye molecules inside of PNPs and exciton dynamics of the self-assembled structures. A detailed understanding of the cascade energy transfer for white light and singlet oxygen generation in multiple fluorophores containing a PNP system by time-resolved spectroscopy is highlighted. Finally, ultrafast spectroscopic investigations provide direct insight into the impacts of electron and hole transfer at the interface in the hybrid materials for photocatalysis and photocurrent generation to construct efficient light-harvesting systems.
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Affiliation(s)
- Bikash Jana
- Department of Materials Science, Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700032, India
| | - Arnab Ghosh
- Department of Materials Science, Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700032, India
| | - Amitava Patra
- Department of Materials Science, Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700032, India
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17
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Temelli B, Ozasik O, Yüksel D. Synthesis, Spectroscopic Properties, and DFT Calculations of Imine-Bridged meso
-meso
- and β-meso
-Linked Porphyrin-Corrole Dyads. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700896] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Baris Temelli
- Department of Chemistry; Hacettepe University; 06800 Ankara Turkey
| | - Ozgun Ozasik
- Department of Chemistry; Hacettepe University; 06800 Ankara Turkey
| | - Dilek Yüksel
- Department of Chemistry; Hacettepe University; 06800 Ankara Turkey
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18
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Ghosh A, Jana B, Maiti S, Bera R, Ghosh HN, Patra A. Light Harvesting and Photocurrent Generation in a Conjugated Polymer Nanoparticle-Reduced Graphene Oxide Composite. Chemphyschem 2017; 18:1308-1316. [DOI: 10.1002/cphc.201700174] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Arnab Ghosh
- Department of Materials Science; Indian Association for the Cultivation of Science, Jadavpur; Kolkata 700032 India
| | - Bikash Jana
- Department of Materials Science; Indian Association for the Cultivation of Science, Jadavpur; Kolkata 700032 India
| | - Sourav Maiti
- Radiation and Photochemistry Division; Bhabha Atomic Research Centre; Mumbai 400085 India
- Department of Chemistry; Savitribai Phule Pune University, Ganeshkhind; Pune 411007 India
| | - Rajesh Bera
- Department of Materials Science; Indian Association for the Cultivation of Science, Jadavpur; Kolkata 700032 India
| | - Hirendra N. Ghosh
- Radiation and Photochemistry Division; Bhabha Atomic Research Centre; Mumbai 400085 India
- Institute of Nano Science and Technology; Mohal 160062, Punjab India
| | - Amitava Patra
- Department of Materials Science; Indian Association for the Cultivation of Science, Jadavpur; Kolkata 700032 India
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19
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Calver CF, Schanze KS, Cosa G. Biomimetic Light-Harvesting Antenna Based on the Self-Assembly of Conjugated Polyelectrolytes Embedded within Lipid Membranes. ACS NANO 2016; 10:10598-10605. [PMID: 27934088 DOI: 10.1021/acsnano.6b07111] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Here we report a biomimetic light-harvesting antenna based on negatively charged poly(phenylene ethynylene) conjugated polyelectrolytes assembled within a positively charged lipid membrane scaffold constructed by the lipid 1,2-dioleoyl-3-trimethylammonium-propane (DOTAP). Light harvested by the polymers was transferred via through-space mechanisms to a lipophilic energy acceptor (the cyanine dye DiI) whose effective molar absorption was enhanced by up to 18-fold due to the antenna effect. Absorption amplification of DiI was found to be due primarily to direct energy transfer from polymers. The efficiency of homoenergy transfer among polymers was next probed by the membrane embedding fullerene derivative phenyl-C61-butryic acid methyl ester (PCBM) acting as an electron acceptor. PCBM was able to quench the emission of up to five polymers, consistent with a modest amount of homotransfer. The ability of the membrane to accommodate a high density of polymer donors without self-quenching was crucial to the success of electronic energy harvesting achieved. This work highlights the potential of lipid membranes as a platform to organize light-harvesting molecules on the nanoscale toward achieving efficient energy transfer to a target chromophore/trap.
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Affiliation(s)
- Christina F Calver
- Department of Chemistry and Centre for Self-Assembled Chemical Structures (CSACS/CRMAA), McGill University , 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
| | - Kirk S Schanze
- Department of Chemistry, University of Texas at San Antonio , One UTSA Way, San Antonio, Texas 78023, United States
| | - Gonzalo Cosa
- Department of Chemistry and Centre for Self-Assembled Chemical Structures (CSACS/CRMAA), McGill University , 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
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20
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Jana B, Bhattacharyya S, Patra A. Functionalized dye encapsulated polymer nanoparticles attached with a BSA scaffold as efficient antenna materials for artificial light harvesting. NANOSCALE 2016; 8:16034-16043. [PMID: 27546792 DOI: 10.1039/c6nr05201k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A potential strategy for a new generation light harvesting system is multi-chromophoric donor-acceptor pairs where light energy is absorbed by an antenna complex and subsequently transfers its energy to the acceptor via energy transfer. Here, we design a system of a functionalized polymer nanoparticle-protein scaffold for efficient light harvesting and white light generation where a dye doped polymer nanoparticle acts as a donor and a dye encapsulated BSA protein acts as an acceptor. Analysis reveals that 91.3% energy transfer occurs from the dye doped polymer nanoparticle to the dye encapsulated BSA protein. The antenna effect of this light harvesting system is found to be 31 at a donor to acceptor ratio of 0.82 : 1 which is unprecedented. The enhanced effective molar extinction coefficient of the acceptor dye is potential for the light harvesting system. Bright white light emission with a quantum yield of 14% under single wavelength excitation is obtained by changing the ratio of donor to acceptor. Analysis reveals that the efficient energy transfer in this polymer-protein assembly may open up new possibilities in designing artificial light harvesting systems for future applications.
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Affiliation(s)
- Bikash Jana
- Department of Materials Science, Indian Association for the Cultivation of Science, Kolkata, 700 032, India.
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21
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Affiliation(s)
- Simanta Kundu
- Department
of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Amitava Patra
- Department
of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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22
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Barman MK, Paramanik B, Bain D, Patra A. Light Harvesting and White-Light Generation in a Composite of Carbon Dots and Dye-Encapsulated BSA-Protein-Capped Gold Nanoclusters. Chemistry 2016; 22:11699-705. [DOI: 10.1002/chem.201601849] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Indexed: 01/17/2023]
Affiliation(s)
- Monoj Kumar Barman
- Department of Materials Science; Indian Association for the Cultivation of Science; Kolkata 700 032 India
| | - Bipattaran Paramanik
- Department of Materials Science; Indian Association for the Cultivation of Science; Kolkata 700 032 India
| | - Dipankar Bain
- Department of Materials Science; Indian Association for the Cultivation of Science; Kolkata 700 032 India
| | - Amitava Patra
- Department of Materials Science; Indian Association for the Cultivation of Science; Kolkata 700 032 India
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23
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Wang S, Singh A, Walsh N, Redmond G. Surfactant-free, low band gap conjugated polymer nanoparticles and polymer:fullerene nanohybrids with potential for organic photovoltaics. NANOTECHNOLOGY 2016; 27:245601. [PMID: 27159927 DOI: 10.1088/0957-4484/27/24/245601] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Stable, aqueous dispersions of nanoparticles based on the low band gap polymers poly [2,7-(9,9-dioctyl-fluorene)-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)] (APFO-3) and poly [N-9'-heptadecanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)] (PCDTBT) were prepared, using a flexible, surfactant-free reprecipitation method, and characterized by a variety of optical techniques. Light scattering measurements indicated average nanoparticle hydrodynamic diameters of approximately 40 nm. The particles presented wide-bandwidth absorption and photoluminescence excitation spectra with high absorption cross-sections on the order of 10(-12) cm(2). Nanoparticle emission spectra were significantly red-shifted, with decreased emission quantum yields and lifetimes, consistent with increased inter-polymer chain interactions in the condensed phase. Single particle photoluminescence studies highlighted the multi-chromophoric nature of the polymer nanoparticles and confirmed their favorable photostabilities. When the nanoparticles were doped with [6,6]-phenyl-C61-butyric acid methyl ester (PCBM), the correspondence of photoluminescence emission quenching, quantum yield decreases, emission lifetime shortening, and increased non-radiative rates with increasing PCBM concentration suggested efficient photo-induced donor-to-acceptor charge transfer between the conjugated polymers and the fullerene dopants co-localized in the nanoparticle cores. Taken together, the data suggest that these surfactant-free hybrid nanomaterials may be useful for integration with future nanostructured organic photovoltaics technologies.
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Affiliation(s)
- Suxiao Wang
- School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
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24
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Bhattacharyya S, Jana B, Sain S, Barman MK, Pradhan SK, Patra A. Photoswitching and Thermoresponsive Properties of Conjugated Multi-chromophore Nanostructured Materials. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:6317-6324. [PMID: 26509336 DOI: 10.1002/smll.201501645] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 06/29/2015] [Indexed: 06/05/2023]
Abstract
Conjugated multi-chromophore organic nanostructured materials have recently emerged as a new class of functional materials for developing efficient light-harvesting, photosensitization, photocatalysis, and sensor devices because of their unique photophysical and photochemical properties. Here, we demonstrate the formation of various nanostructures (fibers and flakes) related to the molecular arrangement (H-aggregation) of quaterthiophene (QTH) molecules and their influence on the photophysical properties. XRD studies confirm that the fiber structure consists of >95% crystalline material, whereas the flake structure is almost completely amorphous and the microstrain in flake-shaped QTH is significantly higher than that of QTH in solution. The influence of the aggregation of the QTH molecules on their photoswitching and thermoresponsive photoluminescence properties is revealed. Time-resolved anisotropic studies further unveil the relaxation dynamics and restricted chromophore properties of the self-assembled nano/microstructured morphologies. Further investigations should pave the way for the future development of organic electronics, photovoltaics, and light-harvesting systems based on π-conjugated multi-chromophore organic nanostructured materials.
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Affiliation(s)
- Santanu Bhattacharyya
- Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-32, India
| | - Bikash Jana
- Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-32, India
| | - Sumanta Sain
- Materials Science Division, Department of Physics, The University of Burdwan, Golapbag, Burdwan, 713104, West Bengal, India
| | - Monoj Kumar Barman
- Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-32, India
| | - Swapan Kumar Pradhan
- Materials Science Division, Department of Physics, The University of Burdwan, Golapbag, Burdwan, 713104, West Bengal, India
| | - Amitava Patra
- Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-32, India
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25
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Mandal S, Bera R, Das S, Nayak SK, Pramanik A, Patra A. Photon Harvesting in Sunscreen-Based Functional Nanoparticles. Chemphyschem 2015; 16:3618-24. [PMID: 26419334 DOI: 10.1002/cphc.201500780] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Indexed: 11/12/2022]
Abstract
The ultraviolet light component in the solar spectrum is known to cause several harmful effects, such as allergy, skin ageing, and skin cancer. Thus, current research attention has been paid to the design and fundamental understanding of sunscreen-based materials. One of the most abundantly used sunscreen molecules is Avobenzone (AB), which exhibits two tautomers. Here, we highlight the preparation of spherically shaped nanoparticles from the sunscreen molecule AB as well as from sunscreen-molecule-encapsulated polymer nanoparticles in aqueous media and study their fundamental photophysical properties by steady-state and time-resolved spectroscopy. Steady-state studies confirm that the AB molecule is in the keto and enol forms in tetrahydrofuran, whereas the enol form is stable in the case of both AB nanoparticles and AB-encapsulated poly(methyl methacrylate) (PMMA) nanoparticles. Thus, the keto-enol transformation of AB molecules is restricted to a nanoenvironment. An enhancement of photostability in both the nanoparticle and PMMA-encapsulated forms under UV light irradiation is observed. The efficient excited energy transfer (60 %) from AB to porphyrin molecules opens up further prospects in potential applications as light-harvesting systems.
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Affiliation(s)
- Sadananda Mandal
- Department of Materials Science, Indian Association for the Cultivation of Science, Kolkata, 700 032, India.,Department of Chemistry, Vivekananda Mahavidyalaya, Burdwan, Sripally, Burdwan-, 713103, West Bengal, India
| | - Rajesh Bera
- Department of Materials Science, Indian Association for the Cultivation of Science, Kolkata, 700 032, India
| | - Somnath Das
- Unilever R & D Bangalore, 64, Main Road, Whitefield, Bangalore, 560066, India
| | - Sandip K Nayak
- Bio-organic Division, Bhabha Atomic Research Centre, Mumbai-, 400 085, India
| | - Amitava Pramanik
- Unilever R & D Bangalore, 64, Main Road, Whitefield, Bangalore, 560066, India.
| | - Amitava Patra
- Department of Materials Science, Indian Association for the Cultivation of Science, Kolkata, 700 032, India.
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Jana B, Bhattacharyya S, Patra A. Conjugated polymer P3HT–Au hybrid nanostructures for enhancing photocatalytic activity. Phys Chem Chem Phys 2015; 17:15392-9. [DOI: 10.1039/c5cp01769f] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Organic–inorganic hybrid nanostructures for designing new optical based materials for efficient photocatalysis.
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Affiliation(s)
- Bikash Jana
- Department of Materials Science
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Santanu Bhattacharyya
- Department of Materials Science
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Amitava Patra
- Department of Materials Science
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
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