Novel 1,8-naphthalimide dye for multichannel sensing of H+ and Cu2+

2018 ◽  
Vol 44 (4) ◽  
pp. 2379-2393 ◽  
Author(s):  
Yufen Chen ◽  
Tengxuan Tang ◽  
Yuhua Chen ◽  
Dongmei Xu
Keyword(s):  
Naphthalimide Dye

Synthesis and characterization of a naphthalimide–dye end-labeled copolymer by reversible addition–fragmentation chain transfer (RAFT) polymerization

2011 ◽  
Vol 89 (3) ◽  
pp. 317-325 ◽  
Author(s):  
Binxin Li ◽  
Daniel Majonis ◽  
Peng Liu ◽  
Mitchell A. Winnik
Keyword(s):  
Chain Transfer ◽  
Raft Polymerization ◽  
Polymer Composition ◽  
Cooh Group ◽  
Agent Based ◽  
Molecular Weights ◽  
Reversible Addition ◽  
Raft Agent ◽  
End Use ◽  
Naphthalimide Dye

We describe the synthesis of an end-functionalized copolymer of N-(2-hydroxypropyl)methacrylamide (HPMA) and N-hydroxysuccinimide methacrylate (NMS) by reversible addition–fragmentation chain transfer (RAFT) polymerization. To control the polymer composition, the faster reacting monomer (NMS) was added slowly to the reaction mixture beginning 30 min after initating the polymerization (ca. 16% HPMA conversion). One RAFT agent, based on azocyanopentanoic acid, introduced a –COOH group to the chain at one end. Use of a different RAFT agent containing a 4-amino-1,8-naphthalimide dye introduced a UV–vis absorbing and fluorescent group at this chain end. The polymers obtained had molecular weights of 30 000 and 20 000, respectively, and contained about 30 mol% NMS active ester groups.

scholarly journals Tetraphenylethenyl-Modified 1,8-Naphthalimide Dye with Efficient Aggregation-Enhanced Emisssion, Solvatochromism and Intramolecular Charge Transfer Characteristics

2021 ◽  
Vol 2109 (1) ◽  
pp. 012025
Author(s):  
Qiuli Zhao ◽  
Qinghao Yang
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Quantum Yields ◽  
Transfer Property ◽  
Organic Luminophores ◽  
Emission Color ◽  
High Fluorescence ◽  
Photo Stability ◽  
Chemical Fields ◽  
Naphthalimide Dye

Abstract 1,8-naphthalimide (NI) dyes are one class of important organic luminophores with good photo-stability, high fluorescent quantum yields and broad emission color-tunability, which are widely used in biological and chemical fields. However, they exhibit bad ACQ property, which heavily limits their application in real word. Contrary to ACQ, tetraphenylethene (TPE) is an AIE luminogen. To eliminate the ACQ effect of NI, TPE was used as core and NI chromophores was used as peripheries to obtain a new dye TPEDNI. TPEDNI dye demonstrates typical aggregation-enhanced emission (AEE) characteristic with high fluorescence Φ>F, solid up to 100% in the film state, which is 24 times of that for its THF solution. Besides, TPEDNI exhibits marked solvatochromism, and the emission peak red-shifts from 505 nm in hexane to 610 nm in acetonitrile. TPENI also displays evident intramolecular charge transfer property in THF/water mixtures

One small molecule as a theranostic agent: naphthalimide dye for subcellular fluorescence localization and photodynamic therapy in vivo

MedChemComm ◽  
2016 ◽  
Vol 7 (6) ◽  
pp. 1171-1175 ◽  
Author(s):  
Lei Zhang ◽  
Kecheng Lei ◽  
Jingwen Zhang ◽  
Wenlin Song ◽  
Yuanhong Zheng ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Fluorescence Imaging ◽  
Small Molecule ◽  
Single Molecule ◽  
Therapeutic Treatment ◽  
Agent Based ◽  
Theranostic Agent ◽  
Bright Fluorescence ◽  
Naphthalimide Dye

A small single-molecule theranostic agent based on naphthalimide was developed, which possessed both bright fluorescence imaging and effective photodynamic therapeutic treatment.

Covalent immobilization of a fluorescent pH-sensitive naphthalimide dye in sol–gel films

2012 ◽  
Vol 63 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Antje Kriltz ◽  
Christin Löser ◽  
Gerhard J. Mohr ◽  
Sabine Trupp
Keyword(s):  
Sol Gel ◽  
Covalent Immobilization ◽  
Ph Sensitive ◽  
Sol Gel Films ◽  
Naphthalimide Dye

scholarly journals The properties and performance of a pH-responsive functionalised nanoparticle

2014 ◽  
Vol 175 ◽  
pp. 171-187 ◽  
Author(s):  
Sandra Ast ◽  
Peter J. Rutledge ◽  
Matthew H. Todd
Keyword(s):  
Exchange Process ◽  
Ph Responsive ◽  
Disulfide Exchange ◽  
Emission Maximum ◽  
Fluorescence Measurements ◽  
And Performance ◽  
The Stability ◽  
Ph Range ◽  
Naphthalimide Dye ◽  
Over Time

We report fluorescence measurements of three quantum dots (QDs) of different sizes functionalised with the same pH responsive naphthalimide dye. QD size strongly influences energy transfer between dye and dot. Using QDs with an emission maximum of 570 nm gives rise to an interesting transfer of energy from dye to dot, while QDs with an emission maximum at 670 nm give unexpected enhancement of the dye emission. Titrations of QDs with the dye provide a means to establish the loading and hence an approximation of the surface dye density, which varies in proportion to QD size. Quenching effects are observed beyond the loading limit, and may indicate non-specific interactions between the excess dye and the nanoparticle. Attachment of the dye to the QD core is achieved by a thiol/disulfide exchange process that has been interrogated with Raman spectroscopy. The stability of these QD–dye conjugates over time and across a physiological pH range has been investigated to provide an assessment of their performance and robustness.

scholarly journals “CinNapht” Dyes as New Cinnoline/Naphthalimide Fused Hybrids Fluorophores: Synthesis, Photo-Physical Study and Use for Bio-Imaging

2021 ◽  
Author(s):  
Minh-Duc Hoang ◽  
Jean-Baptiste Bodin ◽  
Farah Savina ◽  
Vincent Steinmetz ◽  
Jérôme Bignon ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Red Emission ◽  
Solvatochromic Effect ◽  
Physical Study ◽  
Donor Acceptor ◽  
Bio Imaging ◽  
Naphthalimide Dye

Six-membered diaza ring of Cinnoline have been fused on Naphthalimide dye to give donor–acceptor system called CinNapht. These red shifted fluorophore, that can be synthetised in gram scale, exhibits a large Stoke Shift and quantum yield up to 0.33. It is also caracterized by strong solvatochromic effect for green to red emission as well and can be used for bio-imaging

scholarly journals Photophysical and Photochemical Properties of Green Fluorescent Liquid Crystalline Systems

2003 ◽  
Vol 58 (1) ◽  
pp. 45-50 ◽  
Author(s):  
Ivo Grabchev ◽  
Jean-Marc Chovelon
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Liquid Crystalline ◽  
Photophysical Properties ◽  
Orientational Order ◽  
Polymer Dispersed Liquid Crystal ◽  
Polymer Dispersed ◽  
Photochemical Properties ◽  
Green Fluorescent ◽  
Naphthalimide Dye

The photophysical properties of polymer-dispersed liquid crystal systems, containing naphthalimide dye as fluorescent units are reported. Investigations have been carried out on some 1,8- naphtalimide derivatives both in isotropic and anisotropic media, and their photophysal properties have been described. The orientational order parameters of the dyes in nematic liquid crystal ZLI 1840 have been determined. The photostability of the dye/liquid crystal systems has been investigated and the effect that the substituents in the naphthalimide structure have upon the orientation of the dye was discussed.

Polyfluorenes containing 1.8-naphthalimide dye as endcapping groups

2005 ◽  
Vol 152 (1-3) ◽  
pp. 237-240 ◽  
Author(s):  
Jianxin Cao ◽  
Quanguo Zhou ◽  
Yanxiang Cheng ◽  
Yanhou Geng ◽  
Lixiang Wang ◽  
...  
Keyword(s):  
Naphthalimide Dye

scholarly journals “CinNapht” Dyes as New Cinnoline/Naphthalimide Fused Hybrids Fluorophores: Synthesis, Photo-Physical Study and Use for Bio-Imaging

2021 ◽  
Author(s):  
Minh-Duc Hoang ◽  
Jean-Baptiste Bodin ◽  
Farah Savina ◽  
Vincent Steinmetz ◽  
Jérôme Bignon ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Red Emission ◽  
Solvatochromic Effect ◽  
Physical Study ◽  
Donor Acceptor ◽  
Bio Imaging ◽  
Naphthalimide Dye

Six-membered diaza ring of Cinnoline have been fused on Naphthalimide dye to give donor–acceptor system called CinNapht. These red shifted fluorophore, that can be synthetised in gram scale, exhibits a large Stoke Shift and quantum yield up to 0.33. It is also caracterized by strong solvatochromic effect for green to red emission as well and can be used for bio-imaging

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