Isomer-Dependent Excited-State Dynamics of Anthracene Dinaphthyl Derivatives 


Vol. 70,  No. 1, pp. 15-20, Feb.  2026
10.5012/jkcs.2026.70.1.15


PDF JATS XML
  Abstract

We systematically investigate the photophysical properties of positional isomers of dinaphthyl anthracenes (ADNs) in toluene. Among three ADNs, progressive red-shifting and vibronic broadening in steady-state absorption and emission spectra with increasing 2-substitution indicate changes in effective electronic delocalization and conformational heterogeneity. The fluorescence intensity increases modestly from 1,1-ADN to 2,2-ADN, reflecting the sensitivity of emissive properties to substituent orientation. Femtosecond transient absorption spectroscopy reveals pronounced isomer-dependent excited-state dynamics. Although the excited-state absorption (ESA) features remain largely comparable, the ground-state bleaching and stimulated emission (GSB/SE) signals exhibit significant variations in intensity and kinetics. Particularly, isomers with stronger GSB/SE signals display a distinct rise component on the tens-of-picoseconds timescale, consistent with the gradual formation of a more emissive excitedstate configuration. These results establish a direct link between substituent geometry and excited-state relaxation pathways, providing insights into the molecular design of anthracene-based emissive materials for OLED applications.

  Statistics
Cumulative Counts from November, 2022
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.


  Cite this article

[IEEE Style]

H. Kim, M. Kim, M. Jen, J. M. Lim, "Isomer-Dependent Excited-State Dynamics of Anthracene Dinaphthyl Derivatives," Journal of the Korean Chemical Society, vol. 70, no. 1, pp. 15-20, 2026. DOI: 10.5012/jkcs.2026.70.1.15.

[ACM Style]

Hyerim Kim, Minyoung Kim, Myungsam Jen, and Jong Min Lim. 2026. Isomer-Dependent Excited-State Dynamics of Anthracene Dinaphthyl Derivatives. Journal of the Korean Chemical Society, 70, 1, (2026), 15-20. DOI: 10.5012/jkcs.2026.70.1.15.

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)

ISSN(Print) 1017-2548
ISSN(Online) 2234-8530