Photophysical Properties and Ultrafast Excited-State Dynamics of a New Two-Photon Absorbing Thiopyranyl Probe

2013 ◽  
Vol 117 (23) ◽  
pp. 11941-11952 ◽  
Author(s):  
Kevin D. Belfield ◽  
Mykhailo V. Bondar ◽  
Alma R. Morales ◽  
Andrew Frazer ◽  
Ivan A. Mikhailov ◽  
...  
Keyword(s):  
Excited State ◽  
Photophysical Properties ◽  
Excited State Dynamics ◽  
Two Photon

Femtosecond Spectroscopic Studies of the One- and Two-Photon Excited-State Dynamics of 2,2,17,17-Tetramethyloctadeca-5,9,13-trien-3,7,11,15-tetrayne:  A Trimeric Oligodiacetylene

2006 ◽  
Vol 110 (40) ◽  
pp. 11435-11439 ◽  
Author(s):  
Grzegorz M. Balkowski ◽  
Michiel Groeneveld ◽  
Hong Zhang ◽  
Cindy C. J. Hendrikx ◽  
Michael Polhuis ◽  
...  
Keyword(s):  
Excited State ◽  
Spectroscopic Studies ◽  
Excited State Dynamics ◽  
Two Photon ◽  
The One

scholarly journals Two-Photon Excited State Dynamics of Dark Valence, Rydberg, and Superexcited States in 1,3-Butadiene

2014 ◽  
Vol 5 (3) ◽  
pp. 560-565 ◽  
Author(s):  
Oliver Schalk ◽  
Andrey E. Boguslavskiy ◽  
Albert Stolow
Keyword(s):  
Excited State ◽  
Excited State Dynamics ◽  
Two Photon

Two-Photon Excited State Dynamics of Dark Rydberg and Bright Valence States in Furan

2017 ◽  
Vol 34 (4) ◽  
pp. 043101 ◽  
Author(s):  
Jin-You Long ◽  
Chun-Long Hu ◽  
Bing Zhang
Keyword(s):  
Excited State ◽  
Excited State Dynamics ◽  
Two Photon ◽  
Valence States

scholarly journals Excited-State Dynamics of Room-Temperature Phosphorescent Organic Materials Based on Monobenzil and Bisbenzil Frameworks

Materials ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 3904
Author(s):  
Kaveendra Maduwantha ◽  
Shigeyuki Yamada ◽  
Kaveenga Rasika Koswattage ◽  
Tsutomu Konno ◽  
Takuya Hosokai
Keyword(s):  
Excited State ◽  
Density Functional ◽  
Room Temperature ◽  
Photophysical Properties ◽  
Density Functional Theory Calculations ◽  
Time Resolved ◽  
Excited State Dynamics ◽  
Unique Material ◽  
Potential Applications ◽  
Time Resolved Photoluminescence

Room-temperature phosphorescent (RTP) materials have been attracting tremendous interest, owing to their unique material characteristics and potential applications for state-of-the-art optoelectronic devices. Recently, we reported the synthesis and fundamental photophysical properties of new RTP materials based on benzil, i.e., fluorinated monobenzil derivative and fluorinated and non-fluorinated bisbenzil derivative analogues [Yamada, S. et al., Beilstein J. Org. Chem. 2020, 16, 1154–1162.]. To deeply understand their RTP properties, we investigated the excited-state dynamics and photostability of the derivatives by means of time-resolved and steady-state photoluminescence spectroscopies. For these derivatives, clear RTP emissions with lifetimes on the microsecond timescale were identified. Among them, the monobenzil derivative was found to be the most efficient RTP material, showing both the longest lifetime and highest amplitude RTP emission. Time-resolved photoluminescence spectra, measured at 77 K, and density functional theory calculations revealed the existence of a second excited triplet state in the vicinity of the first excited singlet state for the monobenzil derivative, indicative of the presence of a fast intersystem crossing pathway. The correlation between the excited state dynamics, emission properties, and conformational flexibility of the three derivatives is discussed.

Two-Photon Absorption and Excited State Dynamics of Two Organic Molecules Containing Donor/Acceptor Moieties

2008 ◽  
Vol 25 (7) ◽  
pp. 2456-2459 ◽  
Author(s):  
Yan Yong-Li ◽  
Li Bo ◽  
Liu Kang-Jun ◽  
Dong Zhi-Wei ◽  
Ma Guo-Hong ◽  
...  
Keyword(s):  
Excited State ◽  
Organic Molecules ◽  
Photon Absorption ◽  
Excited State Dynamics ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Donor Acceptor

Steric hindrance inhibits excited-state relaxation and lowers the extent of intramolecular charge transfer in two-photon absorbing dyes

2016 ◽  
Vol 18 (7) ◽  
pp. 5587-5596 ◽  
Author(s):  
David J. Stewart ◽  
Matthew J. Dalton ◽  
Stephanie L. Long ◽  
Ramamurthi Kannan ◽  
Zhenning Yu ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Steric Hindrance ◽  
Intramolecular Charge Transfer ◽  
Photophysical Properties ◽  
Two Photon

Steric hindrance inhibits excited-state relaxation and intramolecular charge-transfer, which significantly alters the photophysical properties.

Ultrafast studies of the excited-state dynamics of copper and nickel phthalocyanine tetrasulfonates: potential sensitizers for the two-photon photodynamic therapy of tumors

2004 ◽  
Vol 3 (1) ◽  
pp. 120-126 ◽  
Author(s):  
Michel Fournier ◽  
Claude Pépin ◽  
Daniel Houde ◽  
René Ouellet ◽  
Johan E. van Lier
Keyword(s):  
Photodynamic Therapy ◽  
Excited State ◽  
Excited State Dynamics ◽  
Nickel Phthalocyanine ◽  
Two Photon

Framework induced deformation modulates the photophysical properties of ZnTetra(4-pyridyl)porphyrin incorporated within a new metal organic framework, RWLAA-1

2020 ◽  
Vol 49 (33) ◽  
pp. 11668-11674
Author(s):  
Abdulaziz A. Alanazi ◽  
Lukasz Wojtas ◽  
Jacob M. Mayers ◽  
Jaroslava Miksovska ◽  
Randy W. Larsen
Keyword(s):  
Excited State ◽  
Photophysical Properties ◽  
Metal Organic Framework ◽  
Excited State Dynamics ◽  
Metal Organic ◽  
Organic Framework

Porphyrin deformation in the new metal organic framework RWLAA-1 modulates the photohysical properties of the material specifically by limiting excited state dynamics.

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