Abstract
A series of liquid crystalline and photocrosslinkable polymers were synthesized from 4,4′-bis(m-hydroxyalkyloxy)stilbene (m = 2, 4, 6, 8, 10) with naphthylphosphorodichloridate. The synthesized polymers were characterized by spectroscopic techniques. Thermogravimetric analysis revealed that the polymers were stable between 283 and 341 °C, then underwent two-stage decomposition, and char yield increased with decreasing spacer length. DSC and HOPM analysis disclosed that the polymers III–V (m = 6, 8, 10) exhibited LC phases wherein flexible methylene spacer separates mesogenic alignment and reduces overall rigidity of polymers, while polymers I and II are unable to show LC phase. The photolysis was studied by UV–visible and fluorescence spectroscopy. The rate of photocrosslinking increases with increase in methylene chain. The fluorescence property decreased with successive UV irradiation in the polymers.
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Peng B, Johannsmann D, Rühe J (1999) Macromolecules 32:6759
Leszek M, Jolanta F (1997) React Funct Polym 33:225
Decker C, Bianchi C (2005) J Mater Sci 40:5491. doi:https://doi.org/10.1007/s10853-005-2002-z
Petri A, Kummer S, Brauchle CH (1995) Liq Cryst 19:277
Zentel R (1986) Liq Cryst 1:589
Sung HK, Chi HA, Sam RK, Kwangnak K (2005) Dyes Pigm 65:179
Marten J, Erbe A, Critchley K, Bramble JP, Weber E, Evans SD (2008) Langmuir 24:2479
Pucci A, Cuia FD, Signori F, Ruggeri GJ (2007) Mater Chem 17:783
Georgiev G, Cebe P, Capel M (2005) J Mater Sci 40:1141. doi:https://doi.org/10.1007/s10853-005-6930-4
Hikmet RAM, Lub J, van den Maassen Brink P (1992) Macromolecules 25:4194
Hikmet RAM, Zwerver BH, Lub J (1994) Macromolecules 27:6722
Young WR, Aviram A, Cox RJ (1972) J Am Chem Soc 94:3976
Rameshbabu K, Kannan P, Velu R, Ramamurthy P (2005) Liq Cryst 32:823
Catanescu O, Grigoras M, Colotin G, Dobreanu A, Hurduc N, Simionescu CI (2001) Eur Polym J 37:2213
Li CH, Chang TC (1990) J Polym Sci Part A Polym Chem 28:3625
Canadell J, Mantecón A, Cádiz V (2008) Polym Degrad Stab 93:59
Kannan P, Murugavel SC (1999) J Polym Sci Part A Polym Chem 37:3285
Kim J, Lee K, Lee K, Bae J, Yang J, Hong S (2003) Polym Degrad Stab 79:201
Xia XN, Luy B, Zhou X, Xiong YO, Zhang XH, Xu WJ (2006) J Appl Polym Sci 102:3842
Hamciuc C, Vlad-Bubulac T, Petreus O, Lisa G (2007) Eur Polym J 43:80
Quigliang H, Lei S, Yuan H, Shun Z (2009) J Mater Sci 44:1308. doi:https://doi.org/10.1007/s10853-009-3266-5
Canadell J, Mantecon H, Cadiz V (2007) Polym Degrad Stab 92:1934
Senthil S, Kannan P (2002) Liq Cryst 29:1297
Sakthivel P, Kannan P (2006) Liq Cryst 33:341
Perrin DD, Armorego WLF (1988) Purification of laboratory chemicals. Pergamon, New York
Gao C, Hay AS (1995) J Polym Sci Part A Polym Chem 33:2731
Goldschmith DJ, Kennedy E, Campbello RG (1995) J Org Chem 40:3571
Kang SK, Kim WS, Homoon B (1985) Synthesis 12:1161
Antony R (1993) J Polym Sci Part A Polym Chem 31:3187
Bellamy LJ (1980) The infrared spectra of complex molecules, 3rd edn. Chapman and Hall, London, p 1
Richards M, Dahiyat BI, Arm DM, Lim S, Leong KW (1991) J Polym Sci Part A Polym Chem 29:1157
Kannan P, Raja S, Sakthivel P (2004) Polymer 45:7895
Al-Muaikel NS (2003) Eur Polym J 39:1025
Huang FJ, Wang TL (2004) J Polym Sci Part A Polym Chem 42:290
Bonet J, Callau L, Reina JA, Galia M, Cadiz V (2002) J Polym Sci Part A Polym Chem 40:3883
Percec V, Kawasumi M (1993) Chem Mater 5:826
Sakthivel P, Kannan P (2005) Polymer 46:9821
Gangadhara, Kishore K (1993) Macromolecules 26:2995
Huang HW, Horie K, Tokita M, Watanabe J (1999) Polymer 40:3013
Acknowledgement
We gratefully acknowledge the financial support provided for this research work by Department of Science and Technology, New Delhi, India, under the SERC Scheme (Ref. Sanction No. SR/S1/PC-14/2003).
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Ravikrishnan, A., Sudhakara, P. & Kannan, P. Stilbene-based liquid crystalline and photocrosslinkable polynaphthylphosphate esters. J Mater Sci 45, 435–442 (2010). https://doi.org/10.1007/s10853-009-3959-9
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DOI: https://doi.org/10.1007/s10853-009-3959-9