Comparison of the bandshape and lifetime data analysis of temperature-dependent fluorescence measurements for the investigation of an excited state conformational equilibrium. The case of differently twisted donor–acceptor biphenylsDedicated to Professor F. Dörr on the occasion of his 80th birthday.

2001 ◽  
Vol 3 (24) ◽  
pp. 5430-5437 ◽  
Author(s):  
Michael Maus ◽  
Wolfgang Rettig
Keyword(s):  
Excited State ◽  
Data Analysis ◽  
Conformational Equilibrium ◽  
80Th Birthday ◽  
Lifetime Data ◽  
Temperature Dependent ◽  
Fluorescence Measurements ◽  
Lifetime Data Analysis ◽  
Donor Acceptor

scholarly journals Thermochromic aggregation-induced dual phosphorescence via temperature-dependent sp3-linked donor-acceptor electronic coupling

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Tao Wang ◽  
Zhubin Hu ◽  
Xiancheng Nie ◽  
Linkun Huang ◽  
Miao Hui ◽  
...  
Keyword(s):  
Excited State ◽  
Room Temperature ◽  
Electronic Coupling ◽  
Temperature Dependent ◽  
Molecular Systems ◽  
Donor And Acceptor ◽  
Theoretical Investigations ◽  
Donor Acceptor ◽  
And Control ◽  
Two Temperature

AbstractAggregation-induced emission (AIE) has proven to be a viable strategy to achieve highly efficient room temperature phosphorescence (RTP) in bulk by restricting molecular motions. Here, we show that by utilizing triphenylamine (TPA) as an electronic donor that connects to an acceptor via an sp3 linker, six TPA-based AIE-active RTP luminophores were obtained. Distinct dual phosphorescence bands emitting from largely localized donor and acceptor triplet emitting states could be recorded at lowered temperatures; at room temperature, only a merged RTP band is present. Theoretical investigations reveal that the two temperature-dependent phosphorescence bands both originate from local/global minima from the lowest triplet excited state (T1). The reported molecular construct serves as an intermediary case between a fully conjugated donor-acceptor system and a donor/acceptor binary mix, which may provide important clues on the design and control of high-freedom molecular systems with complex excited-state dynamics.

Semi-Markov Models for Lifetime Data Analysis

1999 ◽  
pp. 229-238 ◽  
Author(s):  
Rafael Pérez-Ocón ◽  
Juan Eloy Ruiz-Castro ◽  
M. Luz Gámiz-Pérez
Keyword(s):  
Data Analysis ◽  
Markov Models ◽  
Lifetime Data ◽  
Lifetime Data Analysis

scholarly journals Thermochromic AIE Dual Phosphorescence via Temperature-Dependent sp3-Linked Donor-Acceptor Electronic Coupling

2020 ◽  
Author(s):  
Tao Wang ◽  
Zhubin Hu ◽  
Xiancheng Nie ◽  
Linkun Huang ◽  
Hui Miao ◽  
...  
Keyword(s):  
Excited State ◽  
Room Temperature ◽  
Electronic Coupling ◽  
Triplet States ◽  
Molecular Motions ◽  
Temperature Dependent ◽  
Molecular Systems ◽  
Donor And Acceptor ◽  
Donor Acceptor ◽  
And Control

<p>Aggregation-induced emission (AIE) has proven to be a viable strategy to achieve highly efficient RTP in bulk by restricting molecular motions. Here we show that by utilizing triphenylamine (TPA) as an electronic donor which connects to an acceptor via an sp3 linker, six TPA-based AIE-active RTP luminophores were obtained. Both the TPA AIE-gen and the <i>sp</i><sup>3</sup>-linkage can suppress aggregation-caused quenching. Consequently, dual phosphorescence bands emitting from localized donor and acceptor triplet states, respectively, could be recorded at lowered temperatures; at room temperature, only a single RTP band corresponding to the lowest triplet state is present, presumably due to thermally assisted electronic coupling between the two states. The reported molecular construct serves as an “intermediary case” between a fully conjugated donor-acceptor system and a do-nor/acceptor binary mix, which may provide important clues on the design and control of molecular systems with complex excited-state dynamics.<br></p>

Statistical Concepts and Tools for Product Lifetime Data Analysis

2021 ◽  
pp. 191-216
Author(s):  
Necip Doganaksoy ◽  
William Q. Meeker ◽  
Gerald J. Hahn
Keyword(s):  
Data Analysis ◽  
Lifetime Data ◽  
Lifetime Data Analysis ◽  
Product Lifetime
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