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Volumn 17, Issue 25, 2011, Pages 7087-7094

Oligo(p-phenylene-ethynylene)s with backbone conformation controlled by competitive intramolecular hydrogen bonds

Author keywords

ethylene glycols; hydrogen bonds; oligo(phenylene ethynylene)s; planar conformation; supramolecular chemistry

Indexed keywords

AMIDO GROUPS; BOND ACCEPTORS; CHAIN FOLDING; CYCLIC STRUCTURES; EFFECTIVE CONJUGATION LENGTH; ESTER CARBONYL GROUP; HYDROGEN BONDING MOTIFS; INTRAMOLECULAR HYDROGEN BOND; NH GROUPS; OLIGO(ETHYLENE GLYCOL); OLIGO(PHENYLENE-ETHYNYLENE)S; OXYGEN ATOM; PLANAR CONFORMATIONS; RANDOM ORIENTATIONS; RELATIVE ORIENTATION; SENSITIVE TECHNIQUES; SIDE-CHAINS; SINGLE OXYGEN ATOM; SIX-MEMBERED RINGS; STRUCTURAL DETAILS;

EID: 79958088310     PISSN: 09476539     EISSN: 15213765     Source Type: Journal    
DOI: 10.1002/chem.201003603     Document Type: Article
Times cited : (30)

References (55)
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    • A minor difference was observed between spectra of OPEs 2 and 4, the reason for which is not completely clear so far. A tentative explanation was proposed as follows. Alkyl chains are less flexible than OEG chains and, under the back-folded conformation, this lower flexibility induced more severe steric interactions with the backbone, neighbouring phenylene units and/or side groups and caused an averagely larger dihedral angle among adjacent backbone phenylene units in 4 than in 2. This brought about the blueshifted absorption of 4
    • A minor difference was observed between spectra of OPEs 2 and 4, the reason for which is not completely clear so far. A tentative explanation was proposed as follows. Alkyl chains are less flexible than OEG chains and, under the back-folded conformation, this lower flexibility induced more severe steric interactions with the backbone, neighbouring phenylene units and/or side groups and caused an averagely larger dihedral angle among adjacent backbone phenylene units in 4 than in 2. This brought about the blueshifted absorption of 4.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.