Publications by authors named "Nobuhiro Ohta"

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Visualizing intracellular milieu and electric field-induced cell responses by fluorescence lifetime imaging microscopy.
Kamlesh Awasthi, Wei-Chen Huang, Hsin-Yun Hsu, Nobuhiro Ohta

Sci Rep· December 2025

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Unveiling the susceptibility of nanosecond pulsed electric field on intracellular function in breast cancerous and normal cells using fluorescence imaging.
Kamlesh Awasthi, Wei-Chen Huang, Chun-Yen Wei, Hsin-Yun Hsu, Nobuhiro Ohta

Biosens Bioelectron· March 2025

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Characterizing the photoluminescence of fluorescein-labeled cellulose in aqueous and alcohol solutions: influence of the cellulose backbone.
Chi-Yang Yen, Shailesh Rana, Kamlesh Awasthi, Nobuhiro Ohta, Masahito Oh-E

Sci Rep· October 2024

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Application of Nanosecond Pulsed Electric Field and Autofluorescence Lifetime Microscopy of FAD in Lung Cells.
Kamlesh Awasthi, Tsai-En Wu, Hsin-Yun Hsu, Nobuhiro Ohta

J Phys Chem B· June 2023

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Pyrene-Based AIEE Active Nanoprobe for Zn and Tyrosine Detection Demonstrated by DFT, Bioimaging, and Organic Thin-Film Transistor.
Muthaiah Shellaiah, Yu-Ting Chen, Natesan Thirumalaivasan, Basheer Aazaad, Kamlesh Awasthi, Nobuhiro Ohta

ACS Appl Mater Interfaces· June 2021

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Novel rhodamine probe for colorimetric and fluorescent detection of Fe ions in aqueous media with cellular imaging.
Muthaiah Shellaiah, Natesan Thirumalaivasan, Basheer Aazaad, Kamlesh Awasthi, Kien Wen Sun, Nobuhiro Ohta

Spectrochim Acta A Mol Biomol Spectrosc· December 2020

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Diversiform Nanostructures Constructed from Tetraphenylethene and Pyrene-Based Acid/Base Controllable Molecular Switching Amphiphilic [2]Rotaxanes with Tunable Aggregation-Induced Static Excimers.
Reguram Arumugaperumal, Muthaiah Shellaiah, Venkatesan Srinivasadesikan, Kamlesh Awasthi, Kien Wen Sun, Nobuhiro Ohta

ACS Appl Mater Interfaces· October 2020

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Characterization of endogenous fluorescence in nonsmall lung cancerous cells: A comparison with nonmalignant lung normal cells.
Kamlesh Awasthi, Feng-Lin Chang, Pei-Ying Hsieh, Hsin-Yun Hsu, Nobuhiro Ohta

J Biophotonics· May 2020

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Enhanced Dissociation of Hot Excitons with an Applied Electric Field under Low-Power Photoexcitation in Two-Dimensional Perovskite Quantum Wells.
Vidya Kattoor, Kamlesh Awasthi, Efat Jokar, Eric Wei-Guang Diau, Nobuhiro Ohta

J Phys Chem Lett· August 2019

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Fluorescence enhancement induced by quadratic electric-field effects on singlet exciton dynamics in poly(3-hexylthiophene) dispersed in poly(methyl methacrylate).
Toshifumi Iimori, Kamlesh Awasthi, Chin-Shiun Chiou, Eric Wei-Guang Diau, Nobuhiro Ohta

Phys Chem Chem Phys· March 2019

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Application of Fluorescence Lifetime Imaging (FLIM) to Measure Intracellular Environments in a Single Cell.
Takakazu Nakabayashi, Kamlesh Awasthi, Nobuhiro Ohta

Adv Exp Med Biol· March 2018

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Effects of Nanosecond Pulsed Electric Field on Intracellular NADH Autofluorescence: A Comparison between Normal and Cancer Cells.
Kamlesh Awasthi, Takakazu Nakabayashi, Liming Li, Nobuhiro Ohta

ACS Omega· June 2017

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Sensitive detection of intracellular environment of normal and cancer cells by autofluorescence lifetime imaging.
Kamlesh Awasthi, Daiki Moriya, Takakazu Nakabayashi, Liming Li, Nobuhiro Ohta

J Photochem Photobiol B· December 2016

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Effects of Nanosecond Pulsed Electric Fields on the Intracellular Function of HeLa Cells As Revealed by NADH Autofluorescence Microscopy.
Kamlesh Awasthi, Takakazu Nakabayashi, Nobuhiro Ohta

ACS Omega· September 2016

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Stark Spectroscopy of Rubrene. II. Stark Fluorescence Spectroscopy and Fluorescence Quenching Induced by an External Electric Field.
Toshifumi Iimori, Ryuichi Ito, Nobuhiro Ohta

J Phys Chem A· July 2016

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Stark Spectroscopy of Rubrene. I. Electroabsorption Spectroscopy and Molecular Parameters.
Toshifumi Iimori, Ryuichi Ito, Nobuhiro Ohta, Hideyuki Nakano

J Phys Chem A· June 2016

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Sensing of intracellular environments by fluorescence lifetime imaging of exogenous fluorophores.
Takakazu Nakabayashi, Nobuhiro Ohta

Anal Sci· January 2016

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External Electric Field Effects on Excited-State Intramolecular Proton Transfer in 4'-N,N-Dimethylamino-3-hydroxyflavone in Poly(methyl methacrylate) Films.
Kazuki Furukawa, Kazuyuki Hino, Norifumi Yamamoto, Kamlesh Awasthi, Takakazu Nakabayashi, Nobuhiro Ohta

J Phys Chem A· September 2015

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Fluorescence characteristics and lifetime images of photosensitizers of talaporfin sodium and sodium pheophorbide a in normal and cancer cells.
Kamlesh Awasthi, Kazuhito Yamamoto, Kazunari Furuya, Takakazu Nakabayashi, Liming Li, Nobuhiro Ohta

Sensors (Basel)· May 2015

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Redox sensor proteins for highly sensitive direct imaging of intracellular redox state.
Kazunori Sugiura, Takeharu Nagai, Masahiro Nakano, Hiroshi Ichinose, Takakazu Nakabayashi, Nobuhiro Ohta

Biochem Biophys Res Commun· February 2015

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External electric field effect on fluorescence spectra of pyrene in solution.
Hung-Chu Chiang, Nobuhiro Ohta

J Phys Chem B· April 2013

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pH dependence of the fluorescence lifetime of FAD in solution and in cells.
Md Serajul Islam, Masato Honma, Takakazu Nakabayashi, Masataka Kinjo, Nobuhiro Ohta

Int J Mol Sci· January 2013

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Application of nanosecond pulsed electric fields into HeLa cells expressing enhanced green fluorescent protein and fluorescence lifetime microscopy.
Kamlesh Awasthi, Takakazu Nakabayashi, Nobuhiro Ohta

J Phys Chem B· September 2012

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Insulator-metal transitions induced by electric field and photoirradiation in organic Mott insulator deuterated κ-(BEDT-TTF)2Cu[N(CN)2]Br.
Farzana Sabeth, Toshifumi Iimori, Nobuhiro Ohta

J Am Chem Soc· April 2012

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pH-dependent network formation of quantum dots and fluorescent quenching by Au nanoparticle embedding.
Shota Sekiguchi, Kenichi Niikura, Naoki Iyo, Yasutaka Matsuo, Asumi Eguchi, Nobuhiro Ohta

ACS Appl Mater Interfaces· November 2011

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