Influence of polymer conformations on the aggregation behaviour of alternating dialkylsilylene-[4,4′-divinyl(cyanostilbene)] copolymers
Literature Information
Publication Date
2011-10-03
DOI
10.1039/C1PY00259G
Impact Factor
5.582
Authors
Chih-Hsien Chen, Shern-Long Lee, Tsong-Shin Lim, Chun-hsien Chen, Tien-Yau Luh
View Original
Abstract
The influence of the substituents at silicon on the aggregation enhanced emission (AEE) of alternating dialkylsilylene-[4,4′-divinyl(cyanostilbene)] copolymers 3 and 4 is examined. The presence of the bulky isopropyl group in 3b significantly enhances the quantum yield upon aggregation. On the other hand, the emission intensity of the methyl-substituted polymer 3a is only slightly enhanced under the same conditions. The bulky isopropyl substituents on silicon may exert the Thorpe–Ingold effect on these copolymers resulting in conformation difference, which may dictate the nature of the aggregation between polymers, and hence, the photophysical behaviour of these polymers.
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Source Journal
Polymer Chemistry
CiteScore:
8.6
Self-citation Rate:
7.3%
Articles per Year:
457
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Recommended Compounds
3-(4-(Trifluoromethoxy)phenyl)-1,2,4-oxadiazole-5-carbohydrazide
CAS Number:
883028-82-8
Molecular Formula:
C10H7F3N4O3
![(3aR,7R,7aR)-2,2-Diethyl-3a,6,7,7a-tetrahydro-7-[(methylsulfonyl)oxy]-1,3-benzodioxole-5-carboxylic Acid Ethyl Ester structure](https://static.chemtradehub.com/structs/204/204254-90-0-7172.webp "(3aR,7R,7aR)-2,2-Diethyl-3a,6,7,7a-tetrahydro-7-[(methylsulfonyl)oxy]-1,3-benzodioxole-5-carboxylic Acid Ethyl Ester structure")
(3aR,7R,7aR)-2,2-Diethyl-3a,6,7,7a-tetrahydro-7-[(methylsulfonyl)oxy]-1,3-benzodioxole-5-carboxylic Acid Ethyl Ester
CAS Number:
204254-90-0
Molecular Formula:
C15H24O7S
![6-[2-(Trifluoromethoxy)phenyl]-2-pyridinecarboxylic acid structure](https://static.chemtradehub.com/structs/887/887983-48-4-f6ac.webp "6-[2-(Trifluoromethoxy)phenyl]-2-pyridinecarboxylic acid structure")
6-[2-(Trifluoromethoxy)phenyl]-2-pyridinecarboxylic acid
CAS Number:
887983-48-4
Molecular Formula:
C13H8F3NO3
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