Regioisomeric AIE-active luminogens with a substituent aldehyde group for controllable and reversible photochromic behavior and sensitive fluorescence detection of hydrogen sulfite

2021 ◽  
Vol 9 (11) ◽  
pp. 3882-3891
Author(s):  
Hai-Xia Yu ◽  
Junge Zhi ◽  
Jin-Liang Wang
Keyword(s):  
Fluorescence Detection ◽  
Aldehyde Group ◽  
Photochromic Behavior ◽  
Solid States

Three simple AIE-active molecules displayed obvious photoactive behaviors in both solution and solid states and selective sensing of hydrogen sulfite.

scholarly journals Multifunctional Spirocyclic Systems

2009 ◽  
Vol 2009 ◽  
pp. 1-6 ◽  
Author(s):  
Boris Lukyanov ◽  
Gennadii Vasilyuk ◽  
Eugene Mukhanov ◽  
Leonid Ageev ◽  
Maria Lukyanova ◽  
...  
Keyword(s):  
Aldehyde Group ◽  
Photochromic Behavior

New spiropyrans with different substituents in the benzopyran fragment have been synthesized and investigated. It was shown that introduction of aldehyde group in the structure of spiropyrans gives a possibility to obtain new functionalized compounds. Effects of the substituents on the photochromic behavior were studied.

Aldehyde gold clusters for molecular labeling

1995 ◽  
Vol 53 ◽  
pp. 858-859
Author(s):  
James F. Hainfeld ◽  
Frederic R. Furuya
Keyword(s):  
Covalent Bond ◽  
Aldehyde Group ◽  
Gold Clusters ◽  
Side Reactions ◽  
Amino Groups ◽  
Sodium Cyanoborohydride ◽  
Schiff’S Base ◽  
Protein Molecules ◽  
Hydroxysuccinimide Esters ◽  
Primary Amino

Glutaraldehyde is a useful tissue and molecular fixing reagents. The aldehyde moiety reacts mainly with primary amino groups to form a Schiff's base, which is reversible but reasonably stable at pH 7; a stable covalent bond may be formed by reduction with, e.g., sodium cyanoborohydride (Fig. 1). The bifunctional glutaraldehyde, (CHO-(CH2)3-CHO), successfully stabilizes protein molecules due to generally plentiful amines on their surface; bovine serum albumin has 60; 59 lysines + 1 α-amino. With some enzymes, catalytic activity after fixing is preserved; with respect to antigens, glutaraldehyde treatment can compromise their recognition by antibodies in some cases. Complicating the chemistry somewhat are the reported side reactions, where glutaraldehyde reacts with other amino acid side chains, cysteine, histidine, and tyrosine. It has also been reported that glutaraldehyde can polymerize in aqueous solution. Newer crosslinkers have been found that are more specific for the amino group, such as the N-hydroxysuccinimide esters, and are commonly preferred for forming conjugates. However, most of these linkers hydrolyze in solution, so that the activity is lost over several hours, whereas the aldehyde group is stable in solution, and may have an advantage of overall efficiency.

NO2-fluorescence detection system using a quartz microchip

2001 ◽  
Vol 121 (9) ◽  
pp. 507-512 ◽  
Author(s):  
Takanori Sato ◽  
Hironori Susaki ◽  
Tetsuo Iwata ◽  
Kentaro Yamamoto ◽  
Tamao Odake ◽  
...  
Keyword(s):  
Fluorescence Detection ◽  
Detection System ◽  
Fluorescence Detection System
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