PMID- 25930244
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20151209
LR  - 20150924
IS  - 1861-471X (Electronic)
IS  - 1861-471X (Linking)
VI  - 10
IP  - 10
DP  - 2015 Oct
TI  - Pyridyl-Amides as a Multimode Self-Assembly Driver for the Design of a 
      Stimuli-Responsive pi-Gelator.
PG  - 2250-6
LID - 10.1002/asia.201500331 [doi]
AB  - An oligo(p-phenylenevinylene) (OPV) derivative connected to pyridyl end groups 
      through an amide linkage (OPV-Py) resulted in a multistimuli-responsive 
      pi-gelator. When compared to the corresponding OPV pi-gelator terminated by a 
      phenyl-amide (OPV-Ph), the aggregation properties of OPV-Py were found to be 
      significantly different, leading to multistimuli gelation and other morphological 
      properties. The pyridyl moiety in OPV-Py initially interferes with the amide 
      H-bonded assembly and gelation, however, protonation of the pyridyl moiety with 
      trifluoroacetic acid (TFA) facilitated the formation of amide H-bonded assembly 
      leading to gelation, which is reversible by the addition of 
      N,N-diisopropyethylamine (DiPEA). Interestingly, addition of Ag(+) ions to a 
      solution of OPV-Py facilitated the formation of a metallo-supramolecular assembly 
      leading to gelation. Surprisingly, ultrasound-induced gelation was observed when 
      OPV-Py was mixed with a dicarboxylic acid (A1). A detailed study using different 
      spectroscopic and microscopic experimental techniques revealed the difference in 
      the mode of assembly in the two molecules and the multistimuli-responsive nature 
      of the OPV-Py gelation.
CI  - (c) 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
FAU - Kartha, Kalathil K
AU  - Kartha KK
AD  - Photosciences and Photonics Group, Chemical Sciences and Technology Division, 
      CSIR-National Institute for Interdisciplinary Science and Technology 
      (CSIR-NIIST), Trivandrum, 695 019, Kerala, India.
FAU - Praveen, Vakayil K
AU  - Praveen VK
AD  - Photosciences and Photonics Group, Chemical Sciences and Technology Division, 
      CSIR-National Institute for Interdisciplinary Science and Technology 
      (CSIR-NIIST), Trivandrum, 695 019, Kerala, India.
FAU - Babu, Sukumaran Santhosh
AU  - Babu SS
AD  - Photosciences and Photonics Group, Chemical Sciences and Technology Division, 
      CSIR-National Institute for Interdisciplinary Science and Technology 
      (CSIR-NIIST), Trivandrum, 695 019, Kerala, India.
FAU - Cherumukkil, Sandeep
AU  - Cherumukkil S
AD  - Photosciences and Photonics Group, Chemical Sciences and Technology Division, 
      CSIR-National Institute for Interdisciplinary Science and Technology 
      (CSIR-NIIST), Trivandrum, 695 019, Kerala, India.
AD  - Academy of Scientific and Innovative Research (AcSIR), CSIR-National Institute 
      for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum, 695 019, 
      Kerala, India.
FAU - Ajayaghosh, Ayyappanpillai
AU  - Ajayaghosh A
AD  - Photosciences and Photonics Group, Chemical Sciences and Technology Division, 
      CSIR-National Institute for Interdisciplinary Science and Technology 
      (CSIR-NIIST), Trivandrum, 695 019, Kerala, India. ajayaghosh@niist.res.in.
AD  - Academy of Scientific and Innovative Research (AcSIR), CSIR-National Institute 
      for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum, 695 019, 
      Kerala, India. ajayaghosh@niist.res.in.
LA  - eng
PT  - Journal Article
DEP - 20150612
PL  - Germany
TA  - Chem Asian J
JT  - Chemistry, an Asian journal
JID - 101294643
OTO - NOTNLM
OT  - H-bonding
OT  - gels
OT  - multistimuli
OT  - oligo(p-phenylenevinylene)s
OT  - self-assembly
EDAT- 2015/05/02 06:00
MHDA- 2015/05/02 06:01
CRDT- 2015/05/02 06:00
PHST- 2015/04/01 00:00 [received]
PHST- 2015/05/02 06:00 [entrez]
PHST- 2015/05/02 06:00 [pubmed]
PHST- 2015/05/02 06:01 [medline]
AID - 10.1002/asia.201500331 [doi]
PST - ppublish
SO  - Chem Asian J. 2015 Oct;10(10):2250-6. doi: 10.1002/asia.201500331. Epub 2015 Jun 
      12.