Results 191 to 200 of about 10,562 (252)

Merocyanine–spiropyran relaxation processes

The European Physical Journal D, 2018
In the paper mechanisms of merocyanine–spiropyran transformation were investigated. It was shown that in dark conditions for such transformation it is necessary to overcome the potential barrier with height of ~0.6 eV. A barrierless transformation into the spiropyran molecule is possible due to the rotation of the phenyl moiety of the merocyanine ...
Olha Kovalenko, Yuriy Lopatkin, Petro Kondratenko, Dmitro Belous   +3 more
openaire   +2 more sources

Highly Fluorescent Merocyanine and Cyanine PMMA Copolymers

Macromolecular Rapid Communications, 2018
AbstractPolymerizable merocyanine and cyanine dye monomers are synthesized and applied in a statistical copolymerization with methylmethacrylate, giving a series of highly fluorescent poly(methyl methacrylate) (PMMA) copolymers. Photophysical properties of yellow to red merocyanine‐ and of pink to dark purple cyanine‐containing copolymers are studied ...
Peter Pasch, Julian Papadopoulos, Andreas Goralczyk, Marc L. Hofer, Monir Tabatabai, Thomas J. J. Müller, Laura Hartmann   +6 more
openaire   +3 more sources

ROS/RNS and Base Dual Activatable Merocyanine-Based NIR-II Fluorescent Molecular Probe for in vivo Biosensing.

Angewandte Chemie, 2021
Inflammation usually results in high-level reactive oxygen species (ROS) and reactive nitrogen species (RNS) not only in acidic tissue but also in alkaline tissue.
Fan Zhang, Xin Zhang, Ying Chen, Haisheng He, Shangfeng Wang, Zuhai Lei   +5 more
semanticscholar   +1 more source

Basic-to-acidic reversible pH switching with a merocyanine photoacid.

Chemical Communications, 2022
The application of merocyanine photoacids has previously been largely limited to neutral and acidic pH values. Here we introduce a new merocyanine photoacid with superior pH switching qualities.
Laura Wimberger, Joakim Andréasson, Jonathon E. Beves   +2 more
semanticscholar   +1 more source

Efficient Negative Photochromism by the Photoinduced Migration of Photochromic Merocyanine/Spiropyran in the Solid State.

Langmuir, 2021
Efficient negative photochromism was achieved by the photoinduced migration of merocyanine in mesoporous silica to an organophilic clay as spiropyran.
Tetsuo Yamaguchi, K. Imwiset, M. Ogawa
semanticscholar   +1 more source

Merocyanine with Hole-Transporting Ability and Efficient Defect Passivation Effect for Perovskite Solar Cells

, 2021
Development of charge-transporting molecules that can simultaneously passivate multiple surface defects of perovskites is highly desirable for further performance increase of perovskite solar cells...
Yibin Li, Fei Wu, Mengmeng Han, Zhen Li, Linna Zhu, Zhong’an Li   +5 more
semanticscholar   +1 more source

Efficient FRET Approaches toward Copper(II) and Cyanide Detections via Host-Guest Interactions of Photo-Switchable [2]Pseudo-Rotaxane Polymers Containing Naphthalimide and Merocyanine Moieties.

ACS Applied Materials and Interfaces, 2020
A supramolecular [2]pseudo-rotaxane containing a naphthalimide-based pillararene host and a spiropyran-based imidazole guest was synthesized and investigated in a semiaqueous solution with 90% water fraction. Upon UV exposure, the close-form structure of
F. Ho, Yi-Jing Huang, Chang-Ching Weng, Chia-Hua Wu, Yaw-Kuen Li, J. Wu, Hong‐Cheu Lin   +6 more
semanticscholar   +1 more source

ANTIVIRAL ACTIVITY OF MEROCYANINE 540

Photochemistry and Photobiology, 1987
Abstract Simultaneous exposure to the lipophilic dye merocyanine 540 (MC 540) and white light inactivates several enveloped viruses. The same treatment appears to have little or no effect on pluripotent hematopoietic stem cells, mature red cells, and mature leukocytes. At least some components of the clotting system are spared, too. The molecular basis
F, Sieber, J M, O'Brien, G J, Krueger, S L, Schober, W H, Burns, S J, Sharkis, L L, Sensenbrenner   +6 more
openaire   +2 more sources

Merocyanine interaction with phosphatidylcholine bilayers

Biochimica et Biophysica Acta (BBA) - Biomembranes, 1993
Merocyanine (MC 540) is a fluorescent probe whose optical properties depend on the environmental polarity. In the presence of lipid bilayers, MC 540 binds to the membrane surface while simultaneously changing its fluorescence properties. Previous studies have shown that the fluorescence of merocyanine depends upon the lipid packing in the membrane.
M, Langner, S W, Hui
openaire   +2 more sources

Optimization of FRET Behavior in Photoswitchable [2]Rotaxanes Containing Bifluorophoric Naphthalimide Donor and Merocyanine Acceptor with Sensor Approaches toward Sulfite Detection

, 2020
A series of multistimuli-responsive [2]rotaxanes with a naphthalimide-functionalized macrocycle threaded through an axle containing a photochromic spiropyran (SP) or merocyanine (MC) stopper were f...
T. T. K. Cuc, P. Q. Nhien, T. M. Khang, Chang-Ching Weng, Chia-Hua Wu, B. Hue, Yaw-Kuen Li, J. Wu, Hong‐Cheu Lin   +8 more
semanticscholar   +1 more source