scholarly journals Development of Circularly Polarized Luminescence (CPL) Peptides Containing Pyrenylalanines and 2-Aminoisobutyric Acid

Processes ◽  
2020 ◽  
Vol 8 (12) ◽  
pp. 1550
Author(s):  
Yuki Mimura ◽  
Yuki Motomura ◽  
Mizuki Kitamatsu ◽  
Yoshitane Imai

Chiral organic and organometallic luminophores that possess circularly polarized luminescence (CPL) properties in the near-ultraviolet to near-infrared region have several useful applications. However, the CPL properties are subject to inherent factors of the compounds; to date, studies on the CPL properties influenced by amino acids and peptides are scarce. Consequently, we developed peptide-pyrene organic luminophores exhibiting various CPL properties. It is conceivable that the peptide-pyrene organic luminophores can be obtained as aggregates when dissolved in a solution. It is also possible that the formation of aggregates makes it difficult to accurately examine the CPL of the peptide in the solution. This study showed that the introduction of sterically hindered 2-aminoisobutyric acid (Aib) units into the peptide backbone inhibits aggregate formation. The resulting luminophores exhibit CPL properties owing to the presence of pyrene units. The results of this study can form a basis for the design of future materials that use peptide-pyrene organic luminophores.

Author(s):  
Fabrice Pointillart ◽  
Bertrand Lefeuvre ◽  
Carlo Andrea Mattei ◽  
Jessica Flores Gonzalez ◽  
Frédéric Gendron ◽  
...  

2020 ◽  
Vol 56 (88) ◽  
pp. 13649-13652 ◽  
Author(s):  
Ao Juan ◽  
Hao Sun ◽  
Jinghui Qiao ◽  
Jinbao Guo

The reversible switching of circularly polarized luminescence in a self-organized emissive helical superstructure using 980 nm NIR excitation light with different power intensities is reported for the first time.


2019 ◽  
Vol 55 (46) ◽  
pp. 6607-6609 ◽  
Author(s):  
Francesco Zinna ◽  
Lorenzo Arrico ◽  
Lorenzo Di Bari

We report a rare example of near infrared circularly polarized luminescence (NIR-CPL) in the 920–1050 nm region associated with the f–f transitions of Yb diketonate complexes bearing chiral ancillary ligands.


2021 ◽  
Author(s):  
Josue Jiménez ◽  
Carolina Díaz-Norambuena ◽  
Sergio Serrano ◽  
Shing Cho Ma ◽  
Florencio Moreno Jiménez ◽  
...  

The accesible at-boron-BINOLated 3,5-bis(4-aminostyryl)ated BODIPY scaffold is highlighted as a workable platform for developing enantiopure small organic molecules exhibiting circularly polarized luminescence (CPL) in the near-infrared (NIR) region, even in...


Symmetry ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 1786
Author(s):  
Yoshitane Imai

Circularly polarized luminescence (CPL) has attracted significant attention in the fields of chiral photonic science and optoelectronic materials science. In a CPL-emitting system, a chiral luminophore derived from chiral molecules is usually essential. In this review, three non-classical CPL (NC-CPL) systems that do not use enantiomerically pure molecules are reported: (i) supramolecular organic luminophores composed of achiral organic molecules that can emit CPL without the use of any chiral auxiliaries, (ii) achiral or racemic luminophores that can emit magnetic CPL (MCPL) by applying an external magnetic field of 1.6 T, and (iii) circular dichroism-silent organic luminophores that can emit CPL in the photoexcited state as a cryptochiral CPL system.


1998 ◽  
Vol 120 (40) ◽  
pp. 10563-10564 ◽  
Author(s):  
Christine L. Maupin ◽  
David Parker ◽  
J. A. Gareth Williams ◽  
James P. Riehl

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