scholarly journals Temperature-Dependence of Solvent-Induced Stokes Shift and Fluorescence Tunability in Carbon Nanodots

2019 ◽  
Vol 5 (2) ◽  
pp. 20 ◽  
Author(s):  
Sciortino ◽  
Cannas ◽  
Messina
Keyword(s):  
Optical Properties ◽  
Excited State ◽  
Low Temperature ◽  
Carbon Dots ◽  
Emission Band ◽  
Stokes Shift ◽  
Carbon Nanodots ◽  
Emission Mechanism ◽  
Role Of Solvent

We carried out a cryogenic investigation on the optical properties of carbon dots, aiming to better understand their emission mechanism and the role of the solvent. The solvatochromic Stokes shift is quantified by a low temperature approach which allows freezing of the photo-excited state of carbon dots, preventing any solvation relaxation. Moreover, the reduction in temperature helps to identify the dynamical inhomogeneous contribution to the broadening of the emission band; therefore, disentangling the role of solvent from other types of broadening, such as the homogeneous and the static inhomogeneous contributions.

Role of Solvent in Excited-State Proton Transfer in Hypericin

1994 ◽  
Vol 98 (34) ◽  
pp. 8352-8358 ◽  
Author(s):  
F. Gai ◽  
M. J. Fehr ◽  
J. W. Petrich
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Excited State Proton Transfer ◽  
Role Of Solvent

Role of Solvent, pH, and Molecular Size in Excited-State Deactivation of Key Eumelanin Building Blocks: Implications for Melanin Pigment Photostability

2008 ◽  
Vol 130 (50) ◽  
pp. 17038-17043 ◽  
Author(s):  
M. Gauden ◽  
A. Pezzella ◽  
L. Panzella ◽  
M. T. Neves-Petersen ◽  
E. Skovsen ◽  
...  
Keyword(s):  
Excited State ◽  
Molecular Size ◽  
Building Blocks ◽  
Melanin Pigment ◽  
Role Of Solvent

scholarly journals Novel properties and applications of carbon nanodots

2018 ◽  
Vol 3 (6) ◽  
pp. 565-597 ◽  
Author(s):  
Lian Xiao ◽  
Handong Sun
Keyword(s):  
Optical Properties ◽  
Carbon Dots ◽  
Carbon Nanodots

Overview of the optical properties and versatile applications of carbon dots.

The role of CO2 detachment in fungal bioluminescence: thermally vs. excited state induced pathways

2020 ◽  
Vol 22 (46) ◽  
pp. 26787-26795
Author(s):  
Cristina Garcia-Iriepa ◽  
Marco Marazzi ◽  
Isabelle Navizet
Keyword(s):  
Excited State ◽  
Computational Chemistry ◽  
Emission Mechanism ◽  
State Population ◽  
Excited State Population

The fungal emission mechanism elucidated by computational chemistry: thermal CO2 release followed by peroxide breaking and excited state population.

scholarly journals Structural Evolution of Carbon Dots During Low Temperature Pyrolysis

Nanoscale ◽  
2022 ◽  
Author(s):  
Hui Luo ◽  
Leonardo Lari ◽  
Hyunjeong Kim ◽  
Servann Herou ◽  
Liviu Cristian Tanase ◽  
...  
Keyword(s):  
Optical Properties ◽  
Low Temperature ◽  
Carbon Dots ◽  
Energy Levels ◽  
Structural Evolution ◽  
Electronic States ◽  
Discrete Energy ◽  
Low Temperature Pyrolysis

Carbon dots (CDs) are an emerging class of photoluminescent material. Their unique optical properties arise from the discrete energy levels in their electronic states, which directly relate to their crystalline...

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