FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2028771499> ?p ?o ?g. }

• W2028771499 endingPage "10203" @default.
• W2028771499 startingPage "10194" @default.
• W2028771499 abstract "The synthesis is described for a small series of oligomers built from (2, 3, 4 or 6) ethynyl-naphthalene repeat units and end-capped with solubilising 1,2,3-tris-dodecyloxy-benzene groups. These compounds absorb in the near-UV region and exhibit strong fluorescence in both fluid solution and a glassy matrix at 77 K. The spectral profiles are fully consistent with a structurally heterogeneous ground state becoming more planar upon excitation and with the low-temperature glass further stabilising the co-planar orientation. The absorption and fluorescence maxima move towards lower energy with increasing number of repeat units and there is a corresponding increase in the Huang-Rhys factor for the radiative process. The non-radiative rate constants also depend on molecular length and are well explained in terms of the energy-gap law. In contrast, very weak phosphorescence is observed at 77 K for which the peak maximum and lifetime remain insensitive to the number of naphthalene units. The triplet lifetimes recorded at ambient temperature are also independent of the molecular length but the triplet-triplet absorption spectra change throughout the series. These results are discussed in terms of the degree of electronic coupling between adjacent repeat units for each of the relevant excited states. During these studies it was noted that the rate of intersystem crossing to the triplet manifold is but weakly affected by heavy-atom perturbers. A non-fluorescent complex is formed between iodoethane and the molecular rod but the corresponding bimolecular process occurs at well below the diffusion-controlled limit. This behaviour is considered in terms of spin-orbit coupling between the excited states and takes account of the differing conjugation lengths." @default.
• W2028771499 created "2016-06-24" @default.
• W2028771499 creator A5007096444 @default.
• W2028771499 creator A5016962044 @default.
• W2028771499 creator A5038705766 @default.
• W2028771499 creator A5052629022 @default.
• W2028771499 creator A5073502050 @default.
• W2028771499 date "2007-12-17" @default.
• W2028771499 modified "2023-09-28" @default.
• W2028771499 title "On the Conjugation Length for Oligo(ethynylnaphthalene)-Based Molecular Rods" @default.
• W2028771499 cites W141356951 @default.
• W2028771499 cites W1630368370 @default.
• W2028771499 cites W1633045562 @default.
• W2028771499 cites W1835764176 @default.
• W2028771499 cites W1964857216 @default.
• W2028771499 cites W1965484656 @default.
• W2028771499 cites W1967382010 @default.
• W2028771499 cites W1967445681 @default.
• W2028771499 cites W1970943752 @default.
• W2028771499 cites W1971274408 @default.
• W2028771499 cites W1972229055 @default.
• W2028771499 cites W1972476246 @default.
• W2028771499 cites W1976451960 @default.
• W2028771499 cites W1976859129 @default.
• W2028771499 cites W1976987926 @default.
• W2028771499 cites W1979063792 @default.
• W2028771499 cites W1980044650 @default.
• W2028771499 cites W1981231666 @default.
• W2028771499 cites W1982560156 @default.
• W2028771499 cites W1985915606 @default.
• W2028771499 cites W1986006503 @default.
• W2028771499 cites W1986317298 @default.
• W2028771499 cites W1987622669 @default.
• W2028771499 cites W1990748623 @default.
• W2028771499 cites W1991211346 @default.
• W2028771499 cites W1991545579 @default.
• W2028771499 cites W1996018331 @default.
• W2028771499 cites W1998926930 @default.
• W2028771499 cites W2000570090 @default.
• W2028771499 cites W2001117533 @default.
• W2028771499 cites W2001948045 @default.
• W2028771499 cites W2002904961 @default.
• W2028771499 cites W2005020545 @default.
• W2028771499 cites W2007708290 @default.
• W2028771499 cites W2009057700 @default.
• W2028771499 cites W2014138285 @default.
• W2028771499 cites W2015387163 @default.
• W2028771499 cites W2015884369 @default.
• W2028771499 cites W2016093263 @default.
• W2028771499 cites W2016733733 @default.
• W2028771499 cites W2017158424 @default.
• W2028771499 cites W2021590564 @default.
• W2028771499 cites W2022142275 @default.
• W2028771499 cites W2023174224 @default.
• W2028771499 cites W2024097942 @default.
• W2028771499 cites W2024536147 @default.
• W2028771499 cites W2025308916 @default.
• W2028771499 cites W2026465919 @default.
• W2028771499 cites W2027270607 @default.
• W2028771499 cites W2028785118 @default.
• W2028771499 cites W2029366633 @default.
• W2028771499 cites W2029899322 @default.
• W2028771499 cites W2031926628 @default.
• W2028771499 cites W2035692942 @default.
• W2028771499 cites W2036094647 @default.
• W2028771499 cites W2036311419 @default.
• W2028771499 cites W2036518565 @default.
• W2028771499 cites W2038087369 @default.
• W2028771499 cites W2038358840 @default.
• W2028771499 cites W2040468908 @default.
• W2028771499 cites W2041364605 @default.
• W2028771499 cites W2044985402 @default.
• W2028771499 cites W2047954651 @default.
• W2028771499 cites W2050993382 @default.
• W2028771499 cites W2054446900 @default.
• W2028771499 cites W2056007032 @default.
• W2028771499 cites W2056629593 @default.
• W2028771499 cites W2066158397 @default.
• W2028771499 cites W2068036867 @default.
• W2028771499 cites W2069506896 @default.
• W2028771499 cites W2070676933 @default.
• W2028771499 cites W2071376734 @default.
• W2028771499 cites W2071876865 @default.
• W2028771499 cites W2073025060 @default.
• W2028771499 cites W2074573245 @default.
• W2028771499 cites W2077511112 @default.
• W2028771499 cites W2081152006 @default.
• W2028771499 cites W2081452949 @default.
• W2028771499 cites W2082458851 @default.
• W2028771499 cites W2084614119 @default.
• W2028771499 cites W2085990611 @default.
• W2028771499 cites W2091793609 @default.
• W2028771499 cites W2093697829 @default.
• W2028771499 cites W2093810900 @default.
• W2028771499 cites W2093996562 @default.
• W2028771499 cites W2094468874 @default.
• W2028771499 cites W2094719083 @default.
• W2028771499 cites W2096712392 @default.

• next