Ab Initio Calculations on PO2and Anharmonic Franck−Condon Simulations of Its Single-Vibrational-Level Emission Spectra

2002 ◽  
Vol 106 (43) ◽  
pp. 10130-10138 ◽  
Author(s):  
Edmond P. F. Lee ◽  
Daniel K. W. Mok ◽  
John M. Dyke ◽  
Foo-Tim Chau
2008 ◽  
Vol 10 (6) ◽  
pp. 834-843 ◽  
Author(s):  
Edmond P. F. Lee ◽  
John M. Dyke ◽  
Daniel K. W. Mok ◽  
Wan-ki Chow ◽  
Foo-tim Chau

1996 ◽  
Vol 258 (1-2) ◽  
pp. 53-62 ◽  
Author(s):  
Alexander M. Mebel ◽  
Yit-Tsong Chen ◽  
Sheng-Hsien Lin

2009 ◽  
Vol 897 (1-3) ◽  
pp. 17-21 ◽  
Author(s):  
Renzhong Li ◽  
Chengfeng Liu ◽  
Chunchun Wang ◽  
Lixin Ning ◽  
Jun Liang ◽  
...  

ChemPhysChem ◽  
2005 ◽  
Vol 6 (4) ◽  
pp. 719-731 ◽  
Author(s):  
Daniel K. W. Mok ◽  
Foo-tim Chau ◽  
Edmond P. F. Lee ◽  
John M. Dyke

Molecules ◽  
2021 ◽  
Vol 26 (18) ◽  
pp. 5519
Author(s):  
Lorenzo Gontrani ◽  
Olivia Pulci ◽  
Marilena Carbone ◽  
Roberto Pizzoferrato ◽  
Paolo Prosposito

In this work, we investigate by ab initio calculations and optical experiments the sensitivity of graphene quantum dots in their use as devices to measure the presence, and concentration, of heavy metals in water. We demonstrate that the quenching or enhancement in the optical response (absorption, emission) depends on the metallic ion considered. In particular, two cases of opposite behaviour are considered in detail: Cd2+, where we observe an increase in the emission optical response for increasing concentration, and Pb2+ whose emission spectra, vice versa, are quenched along the concentration rise. The experimental trends reported comply nicely with the different hydration patterns suggested by the models that are also capable of reproducing the minor quenching/enhancing effects observed in other ions. We envisage that quantum dots of graphene may be routinely used as cheap detectors to measure the degree of poisoning ions in water.


ChemPhysChem ◽  
2005 ◽  
Vol 6 (10) ◽  
pp. 2037-2045 ◽  
Author(s):  
Foo-tim Chau ◽  
Daniel K. W. Mok ◽  
Edmond P. F. Lee ◽  
John M. Dyke

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