Premium
Sub‐Microsecond Molecular Thermometry Using Thermal Spin Flips
Author(s) -
Stehr J.,
Lupton J. M.,
Reufer M.,
Raschke G.,
Klar T. A.,
Feldmann J.
Publication year - 2004
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200400277
Subject(s) - microsecond , intersystem crossing , thermometer , materials science , thermal , population , optoelectronics , measure (data warehouse) , singlet state , atomic physics , optics , thermodynamics , excited state , physics , demography , database , sociology , computer science
The application of platinumporphyrin (an organic semiconductor) as a sensitive molecular thermometer is demonstrated. The instantaneous temperature controls the rate of reverse intersystem crossing after optical population of the triplet, so the ratio of triplet‐to‐singlet emission provides a measure of temperature (see Figure). Sudden electrical heating of a metallic electrode is monitored with sub‐microsecond accuracy, providing input to display design considerations.