Benzimidazole-Based Fluorophores and Noncovalent Organic Frameworks
type: CreativeWork
description: The previous studies of molecular cruciforms based on distyrylbis(arylethynyl)benzenes, tetrakis(arylethynyl)benzenes, tetrakis(alkynyl)ethenes, and benzobisoxazole cruciforms, and their use as chemical sensors will be introduced and summarized. We construct a simpler "half cruciform" architecture with benzimidazole core, namely L-shaped benzimidazole fluorophores. These fluorophores showed separate frontier molecular orbitals in donor–acceptor systems, similar to benzobisoxazole cruciforms. They display change in their fluorescent emission upon exposure to bases, acids and small anions. The preparation of other benzimidazole-based sensor precursors and initial study is also included. A new class of cruciform based on the benzobisimidazole central motif is introduced together with their synthesis and computational evaluation. These benzobisimidazole cruciforms exhibit strong optical responses to bases, albeit negligible to acids. A representative cruciform was examined and showed pronounced colorimetric response to anions. Noncovalent organic frameworks are porous materials; their porosity results from noncovalent interactions. The series of perfluorinated precursors was synthesized and crystalized to obtain desired noncovalent organic frameworks. The porous framework was analyzed by porosity measurement, single and powder X-ray diffractions.
abstract: The previous studies of molecular cruciforms based on distyrylbis(arylethynyl)benzenes, tetrakis(arylethynyl)benzenes, tetrakis(alkynyl)ethenes, and benzobisoxazole cruciforms, and their use as chemical sensors will be introduced and summarized. We construct a simpler "half cruciform" architecture with benzimidazole core, namely L-shaped benzimidazole fluorophores. These fluorophores showed separate frontier molecular orbitals in donor–acceptor systems, similar to benzobisoxazole cruciforms. They display change in their fluorescent emission upon exposure to bases, acids and small anions. The preparation of other benzimidazole-based sensor precursors and initial study is also included. A new class of cruciform based on the benzobisimidazole central motif is introduced together with their synthesis and computational evaluation. These benzobisimidazole cruciforms exhibit strong optical responses to bases, albeit negligible to acids. A representative cruciform was examined and showed pronounced colorimetric response to anions. Noncovalent organic frameworks are porous materials; their porosity results from noncovalent interactions. The series of perfluorinated precursors was synthesized and crystalized to obtain desired noncovalent organic frameworks. The porous framework was analyzed by porosity measurement, single and powder X-ray diffractions.
author: Le, Ha Tuyet Mai 1987-
language: eng
keywords: Cruciform molecules, Noncovalent organic frameworks, Fluorescence, Sensing
date published: 2015-12
date modified: 2026-07-24T02:31:59Z
provider: University of Houston
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: University of Houston

PropertyValue
property ID: Handle
value: https://hdl.handle.net/10657/5376