Femtosecond broadband fluorescence upconversion spectroscopy: Improved setup and photometric correction

2011 ◽  
Vol 82 (6) ◽  
pp. 063108 ◽  
Author(s):  
X.-X. Zhang ◽  
C. Würth ◽  
L. Zhao ◽  
U. Resch-Genger ◽  
N. P. Ernsting ◽  
...  
Keyword(s):  
Fluorescence Upconversion

Subpicosecond fluorescence upconversion measurements of primary events in yellow proteins

1998 ◽  
Vol 282 (3-4) ◽  
pp. 276-282 ◽  
Author(s):  
P Changenet ◽  
H Zhang ◽  
M.J van der Meer ◽  
K.J Hellingwerf ◽  
M Glasbeek
Keyword(s):  
Fluorescence Upconversion

Fluorescence upconversion study of cis‐stilbene isomerization

1990 ◽  
Vol 93 (12) ◽  
pp. 8658-8668 ◽  
Author(s):  
David C. Todd ◽  
John M. Jean ◽  
Sandra J. Rosenthal ◽  
Anthony J. Ruggiero ◽  
Ding Yang ◽  
...  
Keyword(s):  
Fluorescence Upconversion

scholarly journals The role of viscosity in various dynamical processes of different fluorophores in ionic liquid–cosolvent mixtures: a femtosecond fluorescence upconversion study

2019 ◽  
Vol 18 (6) ◽  
pp. 1359-1372 ◽  
Author(s):  
Rupam Dutta ◽  
Gourhari Jana ◽  
Dipankar Mondal ◽  
Arghajit Pyne ◽  
Sourav Sil ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Room Temperature ◽  
Room Temperature Ionic Liquid ◽  
Dynamical Processes ◽  
Ample Evidence ◽  
Fluorescence Upconversion ◽  
Cosolvent Mixtures

Literature reports provide ample evidence of the dynamical studies of various fluorophores in different room-temperature ionic liquid (RTIL)–cosolvent mixtures.

Interaction of UV radiation with DNA helices

2009 ◽  
Vol 81 (9) ◽  
pp. 1635-1644 ◽  
Author(s):  
Dimitra Markovitsi
Keyword(s):  
Energy Transfer ◽  
Excited States ◽  
Flash Photolysis ◽  
Photon Absorption ◽  
Base Pairs ◽  
Relaxation Energy ◽  
Double Helices ◽  
Fluorescence Upconversion ◽  
Theoretical Investigations ◽  
Franck Condon

Recent experimental and theoretical investigations dealing with model DNA double helices, composed of either adenine–thymine (A–T) or guanine–cytosine (G–C) base pairs, and G quadruplexes shed some light on the excited states populated by photon absorption and their relaxation, energy transfer among bases, and one-photon ionization. These studies revealed that the Franck–Condon excited states of DNA helices cannot be considered as the sum of their monomeric constituents because electronic coupling induces delocalization of the excitation over a few bases. Energy transfer takes place via intraband scattering in less than 100 fs. The fluorescence lifetimes of DNA helices detected by fluorescence upconversion and corresponding mainly to ππ* transitions are longer than that of an equimolar mixture of nucleotides; the only exception was observed for alternating G–C polymers. Moreover, nanosecond flash photolysis experiments showed that organization of bases within single and double helices may lead to a lowering of their ionization potential. Finally, the first determination regarding the time-scale needed for the formation of T dimers, the (6–4) adducts, was determined for the single strand (dT)20.

scholarly journals Controllable energy transfer in fluorescence upconversion of NdF_3 and NaNdF_4 nanocrystals

2010 ◽  
Vol 18 (4) ◽  
pp. 3364 ◽  
Author(s):  
M. Li ◽  
Z.-H. Hao ◽  
X.-N. Peng ◽  
J.-B. Li ◽  
X.-F. Yu ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Fluorescence Upconversion
Sign in / Sign up

Export Citation Format

Share Document