The effect of solvent polarity on the photophysical properties of 4-cyano-(4′-methylthio)diphenylacetylene: A prototypic donor–acceptor system

2005 ◽  
Vol 7 (16) ◽  
pp. 3041 ◽  
Author(s):  
Andrew C. Benniston ◽  
Anthony Harriman ◽  
James P. Rostron
Keyword(s):  
Photophysical Properties ◽  
Solvent Polarity ◽  
Effect Of Solvent ◽  
Donor Acceptor

scholarly journals Correction: Photophysical properties of the intramolecular excited charge-transfer states of π-expanded styryl phenanthrimidazoles – effect of solvent polarity

RSC Advances ◽  
2016 ◽  
Vol 6 (87) ◽  
pp. 83709-83709
Author(s):  
V. Thanikachalam ◽  
A. Arunpandiyan ◽  
J. Jayabharathi ◽  
P. Ramanathan
Keyword(s):  
Charge Transfer ◽  
Photophysical Properties ◽  
Solvent Polarity ◽  
Effect Of Solvent

Correction for ‘Photophysical properties of the intramolecular excited charge-transfer states of π-expanded styryl phenanthrimidazoles – effect of solvent polarity’ by V. Thanikachalam et al., RSC Adv., 2014, 4, 6790–6806.

Experimental and theoretical insights on the effect of solvent polarity on the photophysical properties of a benzanthrone dye

2019 ◽  
Vol 218 ◽  
pp. 221-228 ◽  
Author(s):  
Shivraj ◽  
B. Siddlingeshwar ◽  
Anup Thomas ◽  
Elena M. Kirilova ◽  
Darshan Devang Divakar ◽  
...  
Keyword(s):  
Photophysical Properties ◽  
Solvent Polarity ◽  
Effect Of Solvent

Increased Charge Separation Rates with Increasing Donor–Acceptor Distance in Molecular Triads: The Effect of Solvent Polarity

2017 ◽  
Vol 121 (17) ◽  
pp. 9220-9229 ◽  
Author(s):  
Yusen Luo ◽  
Kevin Barthelmes ◽  
Maria Wächtler ◽  
Andreas Winter ◽  
Ulrich S. Schubert ◽  
...  
Keyword(s):  
Charge Separation ◽  
Solvent Polarity ◽  
Effect Of Solvent ◽  
Donor Acceptor

Effect of solvent polarity on the photophysical properties of coumarin-1 dye

2003 ◽  
Vol 119 (19) ◽  
pp. 10202-10208 ◽  
Author(s):  
Atanu Barik ◽  
Sukhendu Nath ◽  
Haridas Pal
Keyword(s):  
Photophysical Properties ◽  
Solvent Polarity ◽  
Effect Of Solvent ◽  
Coumarin 1

scholarly journals Effect of solvent polarity on the photophysical properties of chalcone derivatives

RSC Advances ◽  
2017 ◽  
Vol 7 (39) ◽  
pp. 24204-24214 ◽  
Author(s):  
Rekha Kumari ◽  
Anitha Varghese ◽  
Louis George ◽  
Sudhakar Y. N.
Keyword(s):  
Excited State ◽  
Organic Solvents ◽  
Ground State ◽  
Photophysical Properties ◽  
Solvent Polarity ◽  
Chalcone Derivatives ◽  
Effect Of Solvent

The photophysical properties were studied for FNPO, AFPO and FHPO in different organic solvents. The excited state of the molecules were found to be more polar than the ground state.

Engineering supramolecular photoactive nanomaterials by hydrogen-bonding interactions

2011 ◽  
Vol 83 (4) ◽  
pp. 899-912 ◽  
Author(s):  
K. Yoosaf ◽  
Abdelhalim Belbakra ◽  
Anna Llanes-Pallas ◽  
Davide Bonifazi ◽  
Nicola Armaroli
Keyword(s):  
Photophysical Properties ◽  
Solvent Polarity ◽  
Wide Field ◽  
Force Microscopy ◽  
Anthracene Derivative ◽  
Transmission Electron ◽  
Donor Acceptor ◽  
Phenylene Ethynylenes ◽  
A Charge ◽  
Triple H

The photophysical properties of molecules containing anthracene, pyrene, or phenyleneethynylene chromophores bearing complementary triple H-bonding terminal units, namely, 2,6-di(acetylamino)pyridine (donor–acceptor–donor, DAD) and uracyl (acceptor–donor–acceptor, ADA) have been investigated as a function of solvent polarity. For asymmetric systems, presenting only one H-bonding unit, a solvatochromic effect is found, suggesting a charge-transfer character of the lowest electronic excited state. Systematic absorption and emission studies carried out as a function of temperature show that phenylene-ethynylenes having linear geometry and H-bonding functionalities at both ends undergo reversible self-aggregation in cyclohexane (CHX), leading to the formation of spherical nanoparticles, as evidenced by wide-field fluorescence microscopy (WFM), atomic force microscopy (AFM), and transmission electron microscopy (TEM). A combination of an anthracene derivative bearing only one ADA terminal functionality and a linear phenylene-ethynylene derivative possessing two DAD terminal groups in CHX (2:1 molecular ratio) leads to the formation of vesicular nanostructures. The interaction of linear phenylene-ethynylenes possessing two terminal 2,6-di(acetylamino)pyridine functionalities with that bearing bis uracylic units gives origin to nanofibers, while the assembly of the former with bisuracylic units exhibiting bent geometry leads to the formation of helical nanofibers. The length of these fibers can be controlled by addition of the anthracene derivative having only one uracyl group which effectively blocks the extent of H-bonding, prompting the formation of shorter nanorods.

scholarly journals Photophysical Properties of Protoporphyrin IX, Pyropheophorbide-a, and Photofrin® in Different Conditions

2021 ◽  
Vol 14 (2) ◽  
pp. 138
Author(s):  
Bauyrzhan Myrzakhmetov ◽  
Philippe Arnoux ◽  
Serge Mordon ◽  
Samir Acherar ◽  
Irina Tsoy ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Photophysical Properties ◽  
Protoporphyrin Ix ◽  
Fluorescence Emission ◽  
Solvent Polarity ◽  
Visible Absorption ◽  
Light Dosimetry ◽  
Time Resolved ◽  
Pyropheophorbide A ◽  
Influence Of Solvent

Photodynamic therapy (PDT) is an innovative treatment of malignant or diseased tissues. The effectiveness of PDT depends on light dosimetry, oxygen availability, and properties of the photosensitizer (PS). Depending on the medium, photophysical properties of the PS can change leading to increase or decrease in fluorescence emission and formation of reactive oxygen species (ROS) especially singlet oxygen (1O2). In this study, the influence of solvent polarity, viscosity, concentration, temperature, and pH medium on the photophysical properties of protoporphyrin IX, pyropheophorbide-a, and Photofrin® were investigated by UV-visible absorption, fluorescence emission, singlet oxygen emission, and time-resolved fluorescence spectroscopies.

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