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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.5b00322
|2 doi
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|a pubmed24n0824.xml
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|a (DE-627)NLM247328812
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|a (NLM)25798879
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Zhang, Wenbo
|e verfasserin
|4 aut
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|a Preparation of novel porphyrin nanomaterials based on the pH-responsive shape evolution of porphyrin microspheres
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|c 2015
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 13.08.2015
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|a Date Revised 14.04.2015
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The shapes and properties of self-assembled materials can be adjusted easily using environmental stimuli. Yet, the stimulus-triggered shape evolution of organic microspheres in aqueous solution has rarely been reported so far. Here, a novel type of poly(allylamine hydrochloride)-g-porphyrin microspheres (PAH-g-Por MPs) was prepared by a Schiff base reaction between 2-formyl-5,10,15,20-tetraphenylporphyrin (Por-CHO) and PAH doped in 3.5-μm CaCO3 microparticles, followed by template removal. The PAH-g-Por MPs had an average diameter of 2.5 μm and could be transformed into one-dimensional nanorods (NRs) and wormlike nanostructures (WSs) after being incubated for different times in pH 1-4 HCl solutions. The rate and degree of hydrolysis had a significant effect on the formation and morphologies of the nanorods. The NRspH1, NRs@pH2, and NRs@pH3 were all composed of the released Por-CHO and the unhydrolyzed PAH-g-Por because of the incomplete hydrolysis of the Schiff base. However, the WSs@pH4 were formed by a pure physical shape transformation, because they had the same composition as the PAH-g-Por MPs and the Schiff base bonds were not hydrolyzed. The self-assembled NRs and WSs exhibited good colloidal stability and could emit stable red fluorescence over a relatively long period of time
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|a Journal Article
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|a Xing, Lingbo
|e verfasserin
|4 aut
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|a Wang, Haisheng
|e verfasserin
|4 aut
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|a Liu, Xiujun
|e verfasserin
|4 aut
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|a Feng, Yaqing
|e verfasserin
|4 aut
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| 700 |
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|a Gao, Changyou
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 31(2015), 14 vom: 14. Apr., Seite 4330-40
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:31
|g year:2015
|g number:14
|g day:14
|g month:04
|g pages:4330-40
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|u http://dx.doi.org/10.1021/acs.langmuir.5b00322
|3 Volltext
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