Next Article in Journal
Adding an Artificial Tail—Anchor to a Peptide-Based HIV-1 Fusion Inhibitor for Improvement of Its Potency and Resistance Profile
Next Article in Special Issue
9-Vinylanthracene Based Fluorogens: Synthesis, Structure-Property Relationships and Applications
Previous Article in Journal
Synthesis of Oxadiazole-Thiadiazole Hybrids and Their Anticandidal Activity
Previous Article in Special Issue
Tetraphenylpyrimidine-Based AIEgens: Facile Preparation, Theoretical Investigation and Practical Application
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Molecules
Volume 22
Issue 11
10.3390/molecules22112009
molecules-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Article

Enhancement of Aggregation-Induced Emission by Introducing Multiple o-Carborane Substitutions into Triphenylamine

by
Kenta Nishino
,
Kyoya Uemura
,
Masayuki Gon
,
Kazuo Tanaka
* and
Yoshiki Chujo
*
Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
*
Authors to whom correspondence should be addressed.
Molecules 2017, 22(11), 2009; https://doi.org/10.3390/molecules22112009
Submission received: 30 October 2017 / Revised: 15 November 2017 / Accepted: 17 November 2017 / Published: 19 November 2017
(This article belongs to the Special Issue Aggregation-Induced Emission: Commemorative Issue in Honor of Professor Ben Zhong Tang’s Research Achievements on the Occasion of His 60th Birthday)
Browse Figures
Versions Notes

Abstract

The enhancement of aggregation-induced emission (AIE) is presented on the basis of the strategy for improving solid-state luminescence by employing multiple o-carborane substituents. We synthesized the modified triphenylamines with various numbers of o-carborane units and compared their optical properties. From the optical measurements, the emission bands from the twisted intramolecular charge transfer (TICT) state were obtained from the modified triphenylamines. It was notable that emission efficiencies of the multi-substituted triphenylamines including two or three o-carborane units were enhanced 6- to 8-fold compared to those of the mono-substituted triphenylamine. According to mechanistic studies, it was proposed that the single o-carborane substitution can load the AIE property via the TICT mechanism. It was revealed that the additional o-carborane units contribute to improving solid-state emission by suppressing aggregation-caused quenching (ACQ). Subsequently, intense AIEs were obtained. This paper presents a new role of the o-carborane substituent in the enhancement of AIEs.
Keywords: carborane; twisted intramolecular charge transfer; triphenylamine carborane; twisted intramolecular charge transfer; triphenylamine
Graphical Abstract

Share and Cite

MDPI and ACS Style

Nishino, K.; Uemura, K.; Gon, M.; Tanaka, K.; Chujo, Y. Enhancement of Aggregation-Induced Emission by Introducing Multiple o-Carborane Substitutions into Triphenylamine. Molecules 2017, 22, 2009. https://doi.org/10.3390/molecules22112009

AMA Style

Nishino K, Uemura K, Gon M, Tanaka K, Chujo Y. Enhancement of Aggregation-Induced Emission by Introducing Multiple o-Carborane Substitutions into Triphenylamine. Molecules. 2017; 22(11):2009. https://doi.org/10.3390/molecules22112009

Chicago/Turabian Style

Nishino, Kenta, Kyoya Uemura, Masayuki Gon, Kazuo Tanaka, and Yoshiki Chujo. 2017. "Enhancement of Aggregation-Induced Emission by Introducing Multiple o-Carborane Substitutions into Triphenylamine" Molecules 22, no. 11: 2009. https://doi.org/10.3390/molecules22112009

APA Style

Nishino, K., Uemura, K., Gon, M., Tanaka, K., & Chujo, Y. (2017). Enhancement of Aggregation-Induced Emission by Introducing Multiple o-Carborane Substitutions into Triphenylamine. Molecules, 22(11), 2009. https://doi.org/10.3390/molecules22112009

Article Metrics

Back to TopTop