Bright functional rotaxanes

Abstract

As a hot topic in research, various rotaxanes continue to be constructed. This tutorial review focuses mainly on bright rotaxanes with functional properties, which have been developed in recent years: fluorescent rotaxanes, rotaxanes as logic gates and information storage devices, gelation of rotaxanes, rotaxanes on solid surfaces, sensory rotaxanes, as well as rotaxanes related to biology and so on. Novel synthetic protocols towards several functional rotaxanes are also illustrated.

Characterisation of dihydroazulene and vinylheptafulvene derivatives using Raman spectroscopy: The CN-stretching region

“…The dihydroazulene (DHA)/vinylheptafulvene (VHF) photochromic system [1][2][3] satisfies the requirements for a molecular switch [4][5][6][7][8][9][10] that can be used in molecular electronics devices. A molecular switch should be able to switch reversibly between at least two states as a stimulus is introduced [11].…”

New ferrocenyl derivative with controllable aggregation-induced emission (AIE) characteristics

“…Molecular devices have developed at a good pace in the past decades with ever-increasing interest for molecular computation and molecular electronics [1][2][3][4][5][6][7][8]. As a fundamental and important class of molecular devices, fluorescence molecular switches [9,10] can realize fluorescent "on-off " function by controlling the chemical changes, such as coordination, redox, energy transfer, protonation, and isomerism.…”

Organic π‐Conjugated Molecules for Organic Semiconductors and Photovoltaic Materials

“…Irie and other groups have demonstrated various elegant light-driven switchable systems [19][20][21][22][23][24][25] featuring photoresponsive units such as diarylethenes that are highly durable. Feringa and co-workers developed a series of molecular rotary motors based on overcrowded alkenes for which the photoinduced cis-trans isomerization of C=C is crucial for realizing the unidirectional rotation [24,25].…”