Probing the role of oscillator strength and charge of exciton forming molecular J-aggregates in controlling nanoscale plasmon–exciton interactions

2020 ◽  
Vol 22 (36) ◽  
pp. 20499-20506
Author(s):  
Kamalika Das ◽  
Jyotirban Dey ◽  
Mrigank Singh Verma ◽  
Manish Kumar ◽  
Manabendra Chandra
Keyword(s):  
Oscillator Strength ◽  
Exciton Interaction ◽  
Exciton Interactions ◽  
Surface Capping ◽  
J Aggregates ◽  
Capping Ligands

In this study, we probe into the roles of exciton oscillator strength and charge of J-aggregates as well as nanoparticle's surface capping ligands in dictating the plasmon–exciton interaction.

Understanding the Role of Surface Capping Ligands in Passivating the Quantum Dots Using Copper Dopants as Internal Sensor

2016 ◽  
Vol 120 (35) ◽  
pp. 19785-19795 ◽  
Author(s):  
G. Krishnamurthy Grandhi ◽  
Arunkumar M. ◽  
Ranjani Viswanatha
Keyword(s):  
Quantum Dots ◽  
Surface Capping ◽  
Capping Ligands

Exploring the coherent interaction in a hybrid system of hollow gold nanoprisms and cyanine dye J-aggregates: role of plasmon-hybridization mediated local electric-field enhancement

2017 ◽  
Vol 19 (41) ◽  
pp. 27997-28005 ◽  
Author(s):  
Kamalika Das ◽  
Bidhan Hazra ◽  
Manabendra Chandra
Keyword(s):  
Field Enhancement ◽  
Cyanine Dye ◽  
Plasmon Hybridization ◽  
Electric Field Enhancement ◽  
Coherent Interaction ◽  
Gold Nanoprisms ◽  
Exciton Interactions ◽  
J Aggregates ◽  
Local Electric Field Enhancement

In this work, we probed the possibility of observing strong plasmon–exciton interactions in hollow gold nanoprism–J-aggregate nanocomposites.

scholarly journals Role of Surface-Capping Ligands in Photoexcited Electron Transfer between CdS Nanorods and [FeFe] Hydrogenase and the Subsequent H2 Generation

2017 ◽  
Vol 122 (1) ◽  
pp. 741-750 ◽  
Author(s):  
Molly B. Wilker ◽  
James K. Utterback ◽  
Sophie Greene ◽  
Katherine A. Brown ◽  
David W. Mulder ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photoexcited Electron ◽  
H2 Generation ◽  
Cds Nanorods ◽  
Surface Capping ◽  
Capping Ligands

Electronic absorption, MCD, and luminescence properties of porphyrin J-aggregates

2013 ◽  
Vol 17 (08n09) ◽  
pp. 703-711 ◽  
Author(s):  
Yuichi Kitagawa ◽  
Junji Hiromoto ◽  
Kazuyuki Ishii
Keyword(s):  
Electronic Absorption ◽  
Magnetic Circular Dichroism ◽  
Protonated Form ◽  
Red Shift ◽  
Energy Splitting ◽  
Absorption Bands ◽  
Exciton Interactions ◽  
J Aggregates ◽  
Fluorescence And Phosphorescence Spectra ◽  
Phosphorescence Spectra

In this paper, we have investigated electronic absorption, magnetic circular dichroism, fluorescence, and phosphorescence spectra for a protonated form of H 2 TPPS 4( H 4 TPPS 4) and the J-aggregates of H 4 TPPS 4. The J-aggregation induces a large red-shift in the B (Soret) and Q absorption bands, while the phosphorescence peaks of H 4 TPPS 4 and its J-aggregates are almost entirely similar. The large red-shift of the B-band is quantitatively explained by the exciton interactions. Thus, the exciton interactions in the J-aggregates are proposed as a useful approach to decrease the energy splitting between the fluorescent and phosphorescent states.

Role of the hydrogen-bond in porphyrin J-aggregates

RSC Advances ◽  
2012 ◽  
Vol 2 (33) ◽  
pp. 12989 ◽  
Author(s):  
Valentina Villari ◽  
Placido Mineo ◽  
Emilio Scamporrino ◽  
Norberto Micali
Keyword(s):  
Hydrogen Bond ◽  
J Aggregates

Lanthanide cation-induced tuning of surface capping properties in zinc sulfide nanoparticles: an infrared absorption study

RSC Advances ◽  
2015 ◽  
Vol 5 (42) ◽  
pp. 32920-32932 ◽  
Author(s):  
Ankita Ghatak ◽  
Gouranga H. Debnath ◽  
Madhuri Mandal ◽  
Prasun Mukherjee
Keyword(s):  
Zinc Sulfide ◽  
Infrared Absorption ◽  
Absorption Study ◽  
Lanthanide Cations ◽  
Zinc Sulfide Nanoparticles ◽  
Surface Capping ◽  
Capping Ligands ◽  
Absorption Characteristics

Lanthanide cations tune the infrared absorption characteristics of the capping ligands in Zn(Ln)S [Ln = Sm, Eu, Tb, Dy] nanoparticles.

Design of Water-Soluble Quantum Dots with Novel Surface Ligands for Biological Applications

2003 ◽  
Vol 789 ◽  
Author(s):  
H. Tetsuo Uyeda ◽  
Igor L. Medintz ◽  
Hedi Mattoussi
Keyword(s):  
Aqueous Media ◽  
Extended Period ◽  
Water Soluble ◽  
Coupling Agents ◽  
Biological Applications ◽  
Dihydrolipoic Acid ◽  
Aqueous Dispersions ◽  
Surface Capping ◽  
Capping Ligands ◽  
New Generation

ABSTRACTWe have designed a series of organic oligo- and polyethylene glycol (PEG) based surface capping ligands that allow for QD manipulation in aqueous media. We utilized readily available thioctic acid and various oligo- and polyethylene glycols in simple esterification schemes, followed by reduction of the dithiolane to produce multi-gram quantities of capping substrates. Cap exchange of the native trioctyl-phosphine and -phosphine oxide based ligands with the PEG-terminated dithiol-alkyl cap readily resulted in aqueous dispersions of QDs that were homogeneous and stable in various pH ranges over an extended period of time. Mixed surface capping strategies utilizing ratios of dihydrolipoic acid to the pegylated dihydrolipoic acid were also prepared. We anticipate that such systems should allow one to covalently attach amine containing biomolecules to nanoparticle systems bearing carboxylates, employing known coupling agents, such as (dimethylamino) propyl-3-ethyl-carbodiimide (EDC). This design and conjugation strategy may facilitate the development of a new generation of QD-bioconjugates, which can be directly utilized in bio-related applications such as sensing and cellular imaging.

Plasmon-exciton interaction in the thin film of inhomogeneous ensemble of silver nanoparticles and cyanine J-aggregates

2018 ◽  
Author(s):  
Vladimir A. Polischuk ◽  
Anton A. Starovoytov ◽  
Rezida D. Nabiullina ◽  
Igor A. Gladskih ◽  
Peter S. Parfenov ◽  
...  
Keyword(s):  
Thin Film ◽  
Silver Nanoparticles ◽  
Exciton Interaction ◽  
J Aggregates

scholarly journals Nanoscale J-aggregates of poly(3-hexylthiophene): key to electronic interface interactions with graphene oxide as revealed by KPFM

Nanoscale ◽  
2019 ◽  
Vol 11 (23) ◽  
pp. 11202-11208 ◽  
Author(s):  
Elisa Palacios-Lidón ◽  
Emin Istif ◽  
Ana M. Benito ◽  
Wolfgang K. Maser ◽  
Jaime Colchero
Keyword(s):  
Graphene Oxide ◽  
Critical Role ◽  
Aggregate Structure ◽  
J Aggregates ◽  
Electronic Interface

KPFM reveals the critical role of the aggregate structure in P3HT for achieving efficient phototransport properties in P3HT-GO ensembles.

Nanoscale plasmon–exciton interaction: the role of radiation damping and mode-volume in determining coupling strength

Nanoscale ◽  
2020 ◽  
Vol 12 (21) ◽  
pp. 11612-11618
Author(s):  
Manish Kumar ◽  
Jyotirban Dey ◽  
Mrigank Singh Verma ◽  
Manabendra Chandra
Keyword(s):  
Single Particle ◽  
Coupling Strength ◽  
Radiation Damping ◽  
Exact Role ◽  
Exciton Interaction ◽  
Exciton Coupling ◽  
Single Particle Spectroscopy ◽  
Mode Volume

Single particle spectroscopy unravels the exact role of one specific plasmon dephasing channel, radiation damping, in controlling plasmon–exciton coupling in Au nanorod-J-aggregate hybrids.

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