Ultrafast Dynamics of the Indoline Dye D149 on Mesoporous ZnO and Al2O3 Thin Films

2015 ◽  
Vol 229 (10-12) ◽  
Author(s):  
Oliver Flender ◽  
Peter W. Lohse ◽  
Juan Du ◽  
Torsten Oekermann ◽  
Mirko Scholz ◽  
...  
Keyword(s):  
Thin Films ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Zno Thin Films ◽  
Ultrafast Dynamics ◽  
Eosin Y ◽  
Mesoporous Thin Films ◽  
Mesoporous Zno ◽  
Mesoporous Thin Film ◽  
20 Nm

AbstractUltrafast photoinduced electron injection and subsequent relaxation steps of the indoline dye D149 were investigated for mesoporous thin films using pump–supercontinuum probe (PSCP) transient absorption spectroscopy in the range 370–770 nm. Three types of mesoporous ZnO layers were compared: Electrodeposited ZnO thin films prepared by using the structure-directing agents (1) Eosin Y (EY) and (2) Coumarin 343 (C343), which are known to produce ZnO layers of different morphology; and (3) mesoporous ZnO thin films consisting of sintered nanoparticles with a diameter of 20 nm. As a reference system, we used a “non-injecting” mesoporous thin film with large band-gap, consisting of Al

scholarly journals Ultrafast dynamics of the photo-excited hemes b and cn in the cytochrome b6f complex

2017 ◽  
Vol 19 (4) ◽  
pp. 3287-3296
Author(s):  
Rachna Agarwal ◽  
Adrien A. P. Chauvet
Keyword(s):  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Broad Band ◽  
Transient Absorption Spectroscopy ◽  
Ultrafast Dynamics ◽  
Cytochrome B6f Complex ◽  
Cytochrome B6f ◽  
B6f Complex

The dynamics of hemes b and cn within the cytochrome b6f complex are investigated by means of ultrafast broad-band transient absorption spectroscopy.

Femtosecond Transient Absorption Spectroscopy in α-sexithienyl thin films

1999 ◽  
Vol 101 (1-3) ◽  
pp. 555-556 ◽  
Author(s):  
G. Wegmann ◽  
R.F. Mahrt ◽  
H. Bässler ◽  
H. Giessen ◽  
M. Murgia ◽  
...  
Keyword(s):  
Thin Films ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Femtosecond Transient Absorption ◽  
Femtosecond Transient Absorption Spectroscopy

Preparation of Highly Ordered Mesoporous Thin Film with Alkyltrimethylammonium(CnTMA+)

1999 ◽  
Vol 581 ◽  
Author(s):  
Y. Goto ◽  
N. Sugimoto ◽  
Y Fukushima ◽  
Y. Imada ◽  
Y. Kubota ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Nitrogen Adsorption ◽  
Steel Vessel ◽  
Synthesis Conditions ◽  
Ordered Mesoporous ◽  
Mesoporous Thin Films ◽  
Powder Samples ◽  
Mesoporous Thin Film ◽  
Nitrogen Adsorption Isotherms

ABSTRACTWe synthesized the highly ordered mesoporous thin films with alkyltrimethyl-ammonium (CnTMA+). The arrangement of mesopores was depend on the Si/surfactant ratio. The hexagonal(P6mm) arrangement was observed, when Surfactant/Si ratio was 1/10. Increasing the Surfactant/Si ratio to 1.6/10, the cubic (Pm3n) arrangements were observed. A steel vessel for the measurement of the nitrogen adsorption isotherms of thin film on the substrate was designed. It was found that mesopore arrangements in the film is more regular than that in the powder samples prepared by the same acidic synthesis conditions.

Ultrafast dynamics in ZnO thin films irradiated by femtosecond lasers

2005 ◽  
Vol 136 (7) ◽  
pp. 389-394 ◽  
Author(s):  
Chengbin Li ◽  
Donghai Feng ◽  
Tianqing Jia ◽  
Haiyi Sun ◽  
Xiaoxi Li ◽  
...  
Keyword(s):  
Thin Films ◽  
Femtosecond Lasers ◽  
Zno Thin Films ◽  
Ultrafast Dynamics

scholarly journals Conical intersection dynamics of pyrimidine nucleosides tracked with sub-20-fs UV pulses

2019 ◽  
Vol 205 ◽  
pp. 10007
Author(s):  
Rocío Borrego-Varillas ◽  
Artur Nenov ◽  
Lucia Ganzer ◽  
Aurelio Oriana ◽  
Irene Conti ◽  
...  
Keyword(s):  
Excited State ◽  
Numerical Simulations ◽  
Ab Initio ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Conical Intersection ◽  
Ultrafast Dynamics ◽  
Conical Intersections ◽  
Pyrimidine Nucleosides

By combining transient absorption spectroscopy with sub-20-fs UV pulses and ab initio numerical simulations we follow the ultrafast dynamics in pyrimidine nucleosides and visualize the passage through conical intersections presiding excited state deactivation.

scholarly journals Ultrafast dynamics of highly constrained azobenzene macrocycles

2019 ◽  
Vol 205 ◽  
pp. 09002
Author(s):  
Chavdar Slavov ◽  
Chong Yang ◽  
Luca Schweighauser ◽  
Andreas H. Heindl ◽  
Tim Stauch ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Strong Dependence ◽  
Molecular Properties ◽  
Geometric Constraints ◽  
Transient Absorption Spectroscopy ◽  
Ultrafast Dynamics

The ultrafast photoisomerization of model azobenzene macrocycles was studied by transient absorption spectroscopy. Our results reveal a strong dependence of the dynamics and the overall molecular properties on the geometric constraints and the intramolecular strain.

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