Naphthalene containing amino-ether macrocycle based Cu(ii) templated [2]pseudorotaxanes and OFF/ON fluorescence switching via axle substitution

2018 ◽  
Vol 47 (38) ◽  
pp. 13408-13418 ◽  
Author(s):  
Somnath Bej ◽  
Pradyut Ghosh
Keyword(s):  
Fluorescence Switch ◽  
Fluorescence Switching ◽  
Amino Ether

A newly synthesized naphthalene containing macrocycle is employed towards the development of Cu(ii) templated [2]pseudorotaxanes. Furthermore, a fluorophoric axle threaded [2]pseudorotaxane is explored as an “OFF/ON” fluorescence switch through the axle substitution.

scholarly journals Fluorescence switching of sanguinarine in micellar environments

2015 ◽  
Vol 17 (32) ◽  
pp. 20725-20732 ◽  
Author(s):  
Sagar Satpathi ◽  
Krishna Gavvala ◽  
Partha Hazra
Keyword(s):  
Benzylisoquinoline Alkaloid ◽  
Fluorescence Switch ◽  
Fluorescence Switching

Conversion from iminium to alkanolamine form of Sanguinarine, a key member of benzylisoquinoline alkaloid family, is monitored in micellar environments by fluorescence switch.

Non-invasive fluorescence switch in polymer films based on spiropyran-photoacid modified TPE

2018 ◽  
Vol 6 (8) ◽  
pp. 2113-2122 ◽  
Author(s):  
Qi Yu ◽  
Xing Su ◽  
Ting Zhang ◽  
Yu-Mo Zhang ◽  
Minjie Li ◽  
...  
Keyword(s):  
Polymer Films ◽  
High Contrast ◽  
Non Invasive ◽  
Fluorescence Switch ◽  
Fluorescence Switching

High-contrast fluorescence switching has been achieved in polymer films or fibers with non-invasive stimuli.

Efficient Synthesis and Properties of a Photochromic Diarylethene Bearing Thiophene and Isoxazole Moieties

2011 ◽  
Vol 295-297 ◽  
pp. 1070-1073
Author(s):  
Hong Liang Liu ◽  
Gang Liu ◽  
Shi Qiang Cui ◽  
Wei Jun Liu
Keyword(s):  
Uv Light ◽  
Amorphous Film ◽  
Optical Storage ◽  
Efficient Synthesis ◽  
Fluorescent Properties ◽  
Strong Fluorescence ◽  
Closed Ring ◽  
Fluorescence Switch ◽  
Open Ring ◽  
Fluorescence Switching

A novel photochromic diarylethene based on isoxazole moiety was synthesized and its photochromic and fluorescent properties were also investigated. This compound exhibited reversible photochromism, changing from colorless to red after irradiation with UV light both in solution and in poly-methyl methacrylate (PMMA) amorphous film. Also, it exhibited remarkable fluorescence switching in the solid state. The results showed that the diarylethene exhibited a relatively strong fluorescence switch along with the photochromism from open-ring isomer to closed-ring isomer. Using this dithienylethene 1c as optical storage was performed successfully.

Synthesis and Properties of [1-(2-Methyl-5-pheyl-3-thienyl)-2-(2-methyl-5-(4-cyanophenyl)-3-thienyl]perfluorocyclopentene for Fluorescence Switch

2014 ◽  
Vol 886 ◽  
pp. 151-154
Author(s):  
Hong Jing Jia ◽  
Xu Gang Tang ◽  
Shou Zhi Pu
Keyword(s):  
Data Storage ◽  
Optical Data Storage ◽  
Optical Data ◽  
Closed Ring ◽  
Fluorescence Switch ◽  
Switching Property ◽  
Open Ring ◽  
Fluorescence Switching ◽  
Potential Use ◽  
Hexane Solution

A novel unsymmetrical photochromic diarylethene 1o, which is named [1-(2-Methyl-5-pheyl-3-thienyl)-2-(2-methyl-5-(4-cyanophenyl)-3-thienyperfluorocyclopentene, was synthesized and its structure authenticated. What is more, photochromic, kinetics and fluorescence properties of the diarylethene were investigated in detail. The result indicated that this diarylethene photochromism could be controlled by UV-Vis light, changing the color from colorless to blue in hexane solution upon appropriate irradiation with 297 nm light, respectively. Its In the meantime, the kinetic experiments illustrated that the cyclization/cycloreversion process of this compound was determined to be the zeroth/first reaction. In addition, the fluorescence intensity of diarylethene decreased dramatically from open-ring isomer to closed-ring isomer. The fluorescence switching property can be potential use for optical data storage.

Hybrid nanoparticle based fluorescence switch for recognition of ketoprofen in aqueous media

2020 ◽  
Vol 5 (8) ◽  
pp. 1428-1436
Author(s):  
Anu Saini ◽  
Manpreet Kaur ◽  
Mayank ◽  
Anil Kuwar ◽  
Navneet Kaur ◽  
...  
Keyword(s):  
Aqueous Media ◽  
Fluorescent Chemosensors ◽  
Fluorescence Switch ◽  
Nanomolar Detection ◽  
Hybrid Nanoparticle

Hybrid nanoassembly, fluorescent chemosensors, selective response to ketoprofen, and nanomolar detection.

pH-Sensitive Fluorescence Switching of Pyridylanthracenes: The Effect of the Isomeric Pattern

2020 ◽  
Vol 124 (52) ◽  
pp. 11017-11024
Author(s):  
Toni Haubitz ◽  
Werner Fudickar ◽  
Torsten Linker ◽  
Michael U. Kumke
Keyword(s):  
Ph Sensitive ◽  
Fluorescence Switching

scholarly journals Rubbing induced reversible fluorescence switching in thiophene derivate organic semiconductor film by mechanical amorphisation

2021 ◽  
Author(s):  
Massimiliano Cavallini ◽  
Ilse Manet ◽  
Marco Brucale ◽  
Laura Favaretto ◽  
Manuela Melucci ◽  
...  
Keyword(s):  
Thin Films ◽  
Organic Semiconductor ◽  
Semiconductor Film ◽  
Semiconductor Thin Films ◽  
Fluorescence Switching ◽  
Polymorphic Nature

Here, we applied rubbing on thiophene derivate organic semiconductor thin films to induce a reversible mechanical amorphisation. Amorphisation is associated with fluorescence switching, which is regulated by the polymorphic nature...

Aggregation-responsive ON–OFF–ON fluorescence-switching behaviour of twisted tetrakis(benzo[b]furyl)ethene made by hafnium-mediated McMurry coupling

2018 ◽  
Vol 2 (2) ◽  
pp. 296-299 ◽  
Author(s):  
Hiroyoshi Hamada ◽  
Hayato Tsuji ◽  
Eiichi Nakamura
Keyword(s):  
Switching Behaviour ◽  
Fluorescence Switching ◽  
New Type

A new type of molecule tetrakis(benzo[b]furyl)ethene (TBFE) undergoes two-wavelength ON–OFF–ON three-stage fluorescence switching triggered by aggregation.

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