scholarly journals Time‐resolved spectroscopy and electronic structure of mono‐and dinuclear pyridyl‐triazole/DPEPhos based Cu(I) complexes

2021 ◽  
Author(s):  
Merten Grupe ◽  
Pit Boden ◽  
Patrick Di Martino-Fumo ◽  
Xin Gui ◽  
Cecilia Bruschi ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Time Resolved ◽  
Time Resolved Spectroscopy

Planar hexaphyrin-like macrocycles turning into bis-BODIPYs with box-shaped structures exhibiting excitonic coupling

2021 ◽  
Author(s):  
Arumugam Kalaiselvan ◽  
Shaina Dhamija ◽  
Chakrapani Aswathi ◽  
Arijit K. De ◽  
Sabapathi Gokulnath
Keyword(s):  
Electronic Structure ◽  
Excited State ◽  
Electronic Structure Calculations ◽  
Time Resolved ◽  
Time Resolved Spectroscopy ◽  
Excited State Dynamics ◽  
Structure Calculations ◽  
Excitonic Coupling

This present study reveals the synthesis and excited-state dynamics of carbazole embedded hexaphyrin-like macrocycles and their bis-BODIPY complexes. Time-resolved spectroscopy was performed to elucidate the excitonic coupling in conjunction with electronic structure calculations.

scholarly journals Step-Scan Fourier Transform Infrared Absorption Difference Time-Resolved Spectroscopy Studies of Excited State Decay Kinetics and Electronic Structure of Low-Spin d6 Transition Metal Polypyridine Complexes With 10 Nanosecond Time Resolution

1999 ◽  
Vol 19 (1-4) ◽  
pp. 291-298 ◽  
Author(s):  
Gregory D. Smith ◽  
Pingyun Chen ◽  
James L. Chao ◽  
Kristin M. Omberg ◽  
Darius A. Kavaliunas ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Fourier Transform ◽  
Excited State ◽  
Transition Metal ◽  
Time Resolution ◽  
Decay Kinetics ◽  
Time Resolved ◽  
Time Resolved Spectroscopy ◽  
Vibrational Bands ◽  
Difference Time

Step-scan Fourier transform absorption difference time-resolved spectroscopy (S2FTIR ∆A TRS) has been used to collect mid-IR time-resolved infrared spectra of the transient electronic excited states of polypyridine transition metal complexes with 10 ns time resolution. The time-resolved data can be used for kinetic analysis or to generate “snapshots” of the lowest lying excited state. Shifts of vibrational bands in the excited state relative to the ground state can be used to infer significant details of the electronic structure of the excited state. The multiplex advantage of the FTIR technique allows a wide variety of vibrational bands to be analyzed for this purpose. In the example illustrated, the shift of the ester ν(CO) band in {Ru(bpy)[4,4′-(COOEt)2bpy]2}2+ compared to those in related complexes has been used to address the question of electron delocalization in the excited state.

scholarly journals Photophysical properties and fluorosolvatochromism of D–π–A thiophene based derivatives

RSC Advances ◽  
2020 ◽  
Vol 10 (71) ◽  
pp. 43459-43471
Author(s):  
Hussain A. Z. Sabek ◽  
Ahmed M. M. Alazaly ◽  
Dina Salah ◽  
Hesham S. Abdel-Samad ◽  
Mohamed A. Ismail ◽  
...  
Keyword(s):  
Photophysical Properties ◽  
Fluorescence Emission ◽  
Time Resolved ◽  
Time Resolved Spectroscopy ◽  
Solvation Models

Solvation-dependent photophysical properties of two push–pull thiophene-based compounds with donor–π–acceptor (D–π–A) structures were investigated using absorption, fluorescence emission and time resolved spectroscopy, and supported by different solvation models.

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