Intrinsic Analysis of Radiative and Room-Temperature Nonradiative Processes Based on Triplet State Intramolecular Vibrations of Heavy Atom-Free Conjugated Molecules toward Efficient Persistent Room-Temperature Phosphorescence

2018 ◽  
Vol 9 (15) ◽  
pp. 4251-4259 ◽  
Author(s):  
Shuzo Hirata
Keyword(s):  
Triplet State ◽  
Room Temperature ◽  
Heavy Atom ◽  
Room Temperature Phosphorescence ◽  
Conjugated Molecules ◽  
Intramolecular Vibrations ◽  
Nonradiative Processes

scholarly journals Using Room Temperature Phosphorescence of Gold(I) Complexes for PAHs Sensing

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2444
Author(s):  
Marian Rosental ◽  
Richard N. Coldman ◽  
Artur J. Moro ◽  
Inmaculada Angurell ◽  
Rosa M. Gomila ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Triplet State ◽  
Aromatic Hydrocarbons ◽  
Room Temperature ◽  
Dft Calculation ◽  
Heavy Atom ◽  
Luminescent Properties ◽  
Intersystem Crossing ◽  
Room Temperature Phosphorescence ◽  
Polycyclic Aromatic

The synthesis of two new phosphane-gold(I)–napthalimide complexes has been performed and characterized. The compounds present luminescent properties with denoted room temperature phosphorescence (RTP) induced by the proximity of the gold(I) heavy atom that favors intersystem crossing and triplet state population. The emissive properties of the compounds together with the planarity of their chromophore were used to investigate their potential as hosts in the molecular recognition of different polycyclic aromatic hydrocarbons (PAHs). Naphthalene, anthracene, phenanthrene, and pyrene were chosen to evaluate how the size and electronic properties can affect the host:guest interactions. Stronger affinity has been detected through emission titrations for the PAHs with extended aromaticity (anthracene and pyrene) and the results have been supported by DFT calculation studies.

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