Time-dependent density functional calculations of the Q-like bands of phenylene-linked free-base and zinc porphyrin dimers

2001 ◽  
Vol 84 (3) ◽  
pp. 338-347 ◽  
Author(s):  
Yoichi Yamaguchi ◽  
Yasunori Yokomichi ◽  
Shiyoshi Yokoyama ◽  
Shinro Mashiko
Keyword(s):  
Density Functional Calculations ◽  
Density Functional ◽  
Time Dependent ◽  
Free Base ◽  
Zinc Porphyrin ◽  
Porphyrin Dimers ◽  
Dependent Density

Introducing Color Centers to Silicon Carbide Nanocrystals for In Vivo Biomarker Applications: A First Principles Study

2013 ◽  
Vol 740-742 ◽  
pp. 641-644
Author(s):  
Bálint Somogyi ◽  
Viktor Zólyomi ◽  
Adam Gali
Keyword(s):  
Silicon Carbide ◽  
First Principles ◽  
Density Functional Calculations ◽  
Density Functional ◽  
Near Infrared ◽  
Living Cells ◽  
Time Dependent ◽  
Color Centers ◽  
Dependent Density

Molecule-sized fluorescent emitters are much sought-after to probe biomolecules in living cells. We demonstrate here by time-dependent density functional calculations that the experimentally achievable 1-2 nm sized silicon carbide nanocrystals can emit light in the nearinfrared region after introducing appropriate color centers in them. These near-infrared luminescent silicon carbide nanocrystals may act as ideal fluorophores for in vivo bioimaging.

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